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Bridges Found: 228


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Iron Goat Trail - Twin Tunnels

Status: Intact but closed to all traffic

Location: 47.716647,-121.172281

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Carries over
Design: tunnel
Design Details: Tunnel
Total Length: 2057.0 Feet
Span Length: 0.0 Feet

Overview: Tunnel
History: Built 1916
Built: 1916

Location: King County

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383999

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Looking West

This is the view through the concrete arch of Tunnel 2.

Photo taken by Mike Garland in August 2016

383998

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Photo taken by Mike Garland in August 2016

383997

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Snowshed Remains

Between Tunnel 2 and it's concrete arch.

Photo taken by Mike Garland in August 2016

383996

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Looking West

View from Tunnel 2 entrance.

Photo taken by Mike Garland in August 2016

384008

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Looking East

Photo taken by Mike Garland in August 2016

384009

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Looking East

Photo taken by Mike Garland in August 2016

384007

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Looking East

Looking at Tunnel 2 through the arch.

Photo taken by Mike Garland in August 2016

384006

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Looking East

Looking at Tunnel 2 through the arch.

Photo taken by Mike Garland in August 2016

384005

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Photo taken by Mike Garland in August 2016

384004

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Date stamped in the front of Tunnel 2.

Photo taken by Mike Garland in August 2016

384003

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Arch Weep Holes

Photo taken by Mike Garland in August 2016

384002

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Arch Detail

Photo taken by Mike Garland in August 2016

384001

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Looking west through the concrete arch at Tunnel 2.

Photo taken by Mike Garland in August 2016

384000

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Tunnel 2 West Entrance

Photo taken by Mike Garland in August 2016

383995

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Photo taken by Mike Garland in August 2016

383994

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This is the remnants of the wooden snowshed that was between the concrete arch and the tunnel entrance.

Photo taken by Mike Garland in August 2016

383993

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Looking into the west tunnel.

Photo taken by Mike Garland in August 2016

383992

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Tunnel 2 West Entrance

Photo taken by Mike Garland in August 2016

383991

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Photo taken by Mike Garland in August 2016

383990

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Photo taken by Mike Garland in August 2016

383989

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Looking North

Looking at the gap between the concrete arch and the tunnel.

Photo taken by Mike Garland in August 2016

383988

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West End Tunnel 2

This is the view from the Iron Goat Trail.

Photo taken by Mike Garland in August 2016

383964

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Tunnel Detail

Photo taken by Mike Garland in August 2016

383963

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Tunnel detail

Photo taken by Mike Garland in August 2016

383962

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Tunnel Detail

The timber lining is still in pretty good shape.

Photo taken by Mike Garland in August 2016

383961

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East Entrance Tunnel 2

A picture with me to use for scale. My wife is standing at ground level outside taking the picture.

Photo taken by Mike Garland in August 2016

383960

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East Entrance Tunnel 2

Photo taken by Mike Garland in August 2016

383959

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East Entrance Tunnel 2

Tunnel 2 is in the process of being buried. It's far less accessible than Tunnel 1.

Photo taken by Mike Garland in August 2016

383958

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East Entrance Tunnel 2

Photo taken by Mike Garland in August 2016

383957

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West Portal Tunnel 1

This is looking from near the entrance to Tunnel 2.

Photo taken by Mike Garland in August 2016

383956

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East Entrance Tunnel 2

Photo taken by Mike Garland in August 2016

383955

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East Entrance Tunnel 2

Photo taken by Mike Garland in August 2016

383954

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East Portal Tunnel 2

Photo taken by Mike Garland in August 2016

383929

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West Portal Tunnel 1

Photo taken by Mike Garland in August 2016

383919

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Looking West

Looking out from the west entrance of Tunnel 1.

Photo taken by Mike Garland in August 2016

383918

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Looking West

Looking out from the west entrance of Tunnel 1.

Photo taken by Mike Garland in August 2016

383917

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Tunnel Detail

Photo taken by Mike Garland in August 2016

383916

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Tunnel Lining

Photo taken by Mike Garland in August 2016

383915

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Tunnel Lining

Photo taken by Mike Garland in August 2016

383914

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Tunnel Lining

Photo taken by Mike Garland in August 2016

383913

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Looking East Inside Tunnel 1

This is the view from inside the longer second section of Tunnel 1.

Photo taken by Mike Garland in August 2016

383912

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Looking East

View from inside the west entrance. Notice the intact timber lining, although the lagging has fallen away.

Photo taken by Mike Garland in August 2016

383911

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Tunnel 1 West Entrance

Photo taken by Mike Garland in August 2016

383910

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Tunnel 1 West Portal

Photo taken by Mike Garland in August 2016

383909

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Tunnel 1 West Approach

Photo taken by Mike Garland in August 2016

383908

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Tunnel 1 Overhead

Photo taken by Mike Garland in August 2016

383901

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Looking East

View from inside Tunnel 1.

Photo taken by Mike Garland in August 2016

383900

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Looking East

View from inside Tunnel 1.

Photo taken by Mike Garland in August 2016

383898

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Looking East

Photo taken by Mike Garland in August 2016

383899

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Looking East

View from inside Tunnel 1.

Photo taken by Mike Garland in August 2016

383883

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Looking East

Looking at the first section of Tunnel 1 from just outside the entrance to the second section.

Photo taken by Mike Garland in August 2016

383882

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Photo taken by Mike Garland in August 2016

383881

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East Entrance Second Section Tunnel 1

Photo taken by Mike Garland in August 2016

383880

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Snowshed Remains

Photo taken by Mike Garland in August 2016

383879

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Existing snowshed between sections of Tunnel 1.

Photo taken by Mike Garland in August 2016

383878

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Tunnel 1 Second Section

Existing snowshed between sections of Tunnel 1. The second section of Tunnel 1 is in the background.

Photo taken by Mike Garland in August 2016

383877

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Snowshed Remains

Existing snowshed outside the sections of Tunnel 1.

Photo taken by Mike Garland in August 2016

383875

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Information Plaque

Photo taken by Mike Garland in August 2016

383876

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Looking West

Looking out of the break between sections of Tunnel 1.

Photo taken by Mike Garland in August 2016

383874

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Photo taken by Mike Garland in August 2016

383872

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Tunnel 1 East Entrance

Photo taken by Mike Garland in August 2016

383873

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Looking West

Looking towards the main part of Tunnel 1.

Photo taken by Mike Garland in August 2016

383856

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Tunnel 1 East Entrance

Photo taken by Mike Garland in August 2016

383853

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Tunnel 1 East Portal

Photo taken by Mike Garland in August 2016

383854

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Tunnel 1 East Portal

Photo taken by Mike Garland in August 2016

383855

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Tunnel Date

Photo taken by Mike Garland in August 2016

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12th Avenue South Bridge

Status: Open to traffic

Location: 47.595558,-122.317246

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Carries 12th Avenue S over WA 90 (Dearborn Street)
Design: arch/deck/steel
Design Details: Steel arch
Total Length: 456.1 Feet
Span Length: 170.9 Feet

Overview: Steel arch bridge over WA 90 (Dearborn Street) on 12th Avenue S in Seattle
History: Built 1911; approaches rebuilt in 1917 and 1924
Built: 1911

Location: King County

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497405

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12th Avenue South Bridge

Photo taken by Joe Mabel in August 2007

497406

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12th Avenue South Bridge

1917 view

Photo courtesy Seattle Municipal Archives

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South Park Bridge (Old)

Status: Demolished. Main span removed September 1, 2010.
Closed on June 30, 2010 due to deterioration, a result of years of "deferred maintenance". May be replaced at a cost of 131 Million Dollars, possibly with the aid of a special tax.

Location: 47.529722,-122.313889

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Carries 14th Avenue South over Duwamish River
Design: truss/deck/pratt
Design Details: Bascule
Total Length: 1285.2 Feet
Span Length: 240.2 Feet

Overview: Bascule bridge over Duwamish River on 14th Avenue South in Seattle
History: Built 1931
Built: 1931

Location: King County

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266222

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14th Avenue South Park Bridge

Seattle

Photo taken by Douglas Butler in April 2013

315524

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South Park Avenue Bridge (Old)

Close detail

Photo taken by Douglas Butler in November 2014

489572

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South Park Bridge in Seattle

Photo taken by Wikipedia Commons

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Battery Street Tunnel

Status: Replaced by a new bridge

Location: 47.618919,-122.343612

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Carries WA 99 over City streets
Design: tunnel
Design Details: Tunnel
Total Length: 2140.2 Feet
Span Length: 0.0 Feet

Overview: Tunnel under city streets on WA 99 in Seattle
History: Built 1954
Built: 1954

Location: King County

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197274

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Approach View Of South Tunnel Portal, Looking East From Southbound Lanes.

Photo taken by Historic American Engineering Record

197275

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Sprinkler Vault At Fourth And Battery.

Photo taken by Historic American Engineering Record

197276

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Control Room With Sprinkler System Controls, Including Manual Control Boxes For The Ventilation System And A Plc Switch For Automatic Co (Carbon Monoxide) System. The Air Testing System Is Free Standing And The Fans Are Computer-Operated.

Photo taken by Historic American Engineering Record

197277

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Emergency Exit Stairwell In Northbound Tunnel.

Photo taken by Historic American Engineering Record

197278

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Southbound Tunnel, Looking West Out Of South Portal.

Photo taken by Historic American Engineering Record

197279

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General View Of Northbound Bore Of Battery Street Tunnel, Looking North.

Photo taken by Historic American Engineering Record

197280

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North Tunnel Approach, View From Northbound Bore.

Photo taken by Historic American Engineering Record

197281

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Fan Detail In Southbound Tunnel Bore Near South Tunnel Portal.

Photo taken by Historic American Engineering Record

197282

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Passive Ventilation Detail (Corresponds With Metal Grate In Center Of Battery Street). Looking South At Grate In Southbound Tunnel Bore.

Photo taken by Historic American Engineering Record

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Bn Tunnel Bridge

Status: Open to traffic

Location: 0.000000,0.000000

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Carries Bn Tunnel over I-405
Design: tunnel
Design Details: Tunnel
Total Length: 359.9 Feet
Span Length: 0.0 Feet

Overview: Tunnel over I-405 on Bn Tunnel in Bellevue
History: Built 1972
Built: 1972

Location: King County

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Old Cascade Highway Bridge

Status: Closed due to flood damage

Location: 47.716944,-121.392500

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Carries Cascade Stevens Highway over Miller River
Design: truss/through/pratt
Design Details: Through truss
Total Length: 228.0 Feet
Span Length: 160.1 Feet

Overview: Pratt through truss bridge over Miller River on Old Cascade Highway
History: Built 1922
Built: 1922

Location: King County

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193362

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Miller River Bridge

View from East

Photo taken by K. A. Erickson in February 2010

193363

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Miller River Bridge

Western Portal

Photo taken by K. A. Erickson in February 2010

193364

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Miller River Bridge

Oblique view from South

Photo taken by K. A. Erickson in February 2010

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Cowen Park Ravine Bridge

Status: Open to traffic

Location: 47.673364,-122.311785

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Carries 15th Avenue NE over Cowen Park Ravine
Design: arch/deck/open
Design Details: Open spandrel deck arch
Total Length: 358.0 Feet
Span Length: 160.1 Feet

Overview: Concrete arch bridge over Cowen Park Ravine on 15th Avenue NE in Seattle
History: Built 1936; received seismic retrofit in 2020
Built: 1936

Location: King County

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190178

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Elevation

This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported

Photo taken by Joe Mabel

190179

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View Under Bridge

This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported

Photo taken by Joe Mabel

486556

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Cowen Park Ravine Bridge

Photo from Seattle DOT

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Cumberland-Kanaskat Road Bridge

Status: Open to traffic

Location: 47.319302,-121.893512

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Carries Cumberland-Kanaskat Road over Green River
Design: arch/deck/closed
Design Details: Arch
Total Length: 220.2 Feet
Span Length: 100.1 Feet

Overview: Concrete arch bridge over Green River on Cumberland-Kanaske Road
History: Built 1918; rehabilitated 1955
Built: 1918

Location: King County

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375649

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Historical Photo

Photo from 1924 Luten Catalog.

375648

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View beside bridge.

November 2015

© Steven Pavlov / http://commons.wikimedia.org/wiki/User:Senapa / CC BY-SA 4.0

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1st Avenue South Bridge (NB)

Status: Open to traffic

Location: 47.541800,-122.334336

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Carries WA 99 over Duwamish River
Design: other
Design Details: Bascule
Total Length: 3010.0 Feet
Span Length: 0.0 Feet

Overview: Bascule bridge over Duwamish River on WA 99 in Seattle
History: Built 1956
Built: 1956

Location: King County

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284321

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Duwamish River Bridge

Seattle WA

Photo taken by Douglas Butler in April 2013

337684

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Duwamish River Bridge

Photo taken by Douglas Butler in September 2015

337688

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Image courtesy of the EPA

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Duwamish River Bridge

Status: Open to traffic

Location: 47.490833,-122.279722

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Carries 42nd Avenue S over Duwamish River
Design: truss/through/polygonal
Design Details: Polygonal Warren through truss
Total Length: 284.1 Feet
Span Length: 220.2 Feet

Overview: Through truss bridge over Duwamish River on 42nd Avenue S in Tukwila
History: Built 1949
Built: 1949

Location: King County

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488483

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Allentown Bridge

Photo taken by Joe Mabel in April 2009

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1st Avenue South Bridge (SB)

Status: Open to traffic

Location: 47.542246,-122.334585

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Carries Southbound WA 99 over Duwamish River West
Design: truss/through
Design Details: Bascule
Total Length: 2895.2 Feet
Span Length: 379.0 Feet

Overview: Bascule bridge over Duwamish River West on Southbound WA 99 in Seattle
History: Built 1996
Built: 1996

Location: King County

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Divider

284322

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Duwamish River West Bridge

Southbound

Photo taken by Douglas Butler in April 2013

337685

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Duwamish River West Bridge

Photo taken by Douglas Butler in September 2015

488671

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Photo taken by West Seattle News

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E-S Ramp Tunnel Bridge

Status: Open to traffic

Location: 47.625000,-122.328333

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Carries E-S Ramp Tunnel over I-5
Design: tunnel
Design Details: Tunnel
Total Length: 600.1 Feet
Span Length: 0.0 Feet

Overview: Tunnel over I-5 on E-S Ramp Tunnel in Seattle
History: Built 1967
Built: 1967

Location: King County

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University Bridge

Status: Open to traffic

Location: 47.653177,-122.320100

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Carries Eastlake Avenue NE over Portage Bay
Design: truss/pony/pratt
Design Details: Pratt pony truss bascule
Total Length: 291.0 Feet
Span Length: 217.9 Feet

Overview: Bascule bridge over Portage Bay on Eastlake Avenue NE in Seattle
History: Built 1919, approaches and bridge deck rebuilt between 1932 and 1933
Built: 1919

Location: King County

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254757

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Looking east from the air

Photo taken by Jann Mayer in May 2013

254758

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Looking east from the air

I-5 Lake Washington Ship Canal Bridge in the foreground

Photo taken by Jann Mayer in May 2013

268507

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Seattle University Bridge from Portage Bay

Photo taken by Panoramio user Joe_Lourenco

272043

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University Bridge

Seattle

Photo taken by Douglas Butler in April 2013

272044

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University Bridge

Closed for vehical traffic

Photo taken by Douglas Butler in April 2013

273777

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University Bridge

HDR image showing the University Bridge, as viewed from the west. Photo taken from the float at Ivar's Salmon House.

Photo taken by Evin Fairchild in November 2013

307351

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University Bridge

Looking SW

Photo taken by Royce and Bobette Haley in August 2014

307352

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University Bridge

Looking SW

Photo taken by Royce and Bobette Haley in August 2014

307353

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University Bridge

Looking SW

Photo taken by Royce and Bobette Haley in August 2014

307354

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University Bridge

Looking SW

Photo taken by Royce and Bobette Haley in August 2014

307355

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University Bridge

Looking SW

Photo taken by Royce and Bobette Haley in August 2014

307356

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University Bridge

Looking SW

Photo taken by Royce and Bobette Haley in August 2014

307357

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University Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

307358

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University Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

307359

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University Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

307360

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University Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

307361

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University Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

307362

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University Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

477100

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Photo taken by Patrick Gurwell in July 2016

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Eastlake Avenue NE Bridge

Status: Open to traffic

Location: 47.654406,-122.319070

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Carries Eastlake Avenue NE over NE Pacific Street
Design: truss/deck/warren
Design Details: Warren deck truss
Total Length: 975.1 Feet
Span Length: 132.9 Feet

Overview: Deck truss bridge over NE Pacific Street on Eastlake Avenue NE in Seattle
History: Built 1930
Built: 1930

Location: King County

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Eastlake Avenue NE Bridge

Status: Open to traffic

Location: 47.652222,-122.320833

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Carries Eastlake Avenue Ne over Portage Bay
Design: truss/deck
Design Details: Deck truss
Total Length: 203.1 Feet
Span Length: 100.1 Feet

Overview: Deck truss bridge over Portage Bay on Eastlake Avenue Ne in Seattle
History: Built 1930
Built: 1930

Location: King County

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Edgewick Road Bridge

Status: Lost

Location: 47.454266,-121.716382

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Carries Edgewick Road over South Fork Snoqualmie River
Design: truss
Design Details: Truss
Total Length: 186.0 Feet
Span Length: 0.0 Feet

Overview: Lost truss bridge over South Fork Snoqualmie River on Edgewick Road
History: Built 1920, Replaced 2004
Built: 1920

Location: King County

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Exp Tunnel Bridge

Status: Open to traffic

Location: 47.618333,-122.328333

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Carries Exp Tunnel over I-5
Design: tunnel
Design Details: Tunnel
Total Length: 800.9 Feet
Span Length: 0.0 Feet

Overview: Tunnel over I-5 on Exp Tunnel in Seattle
History: Built 1963
Built: 1963

Location: King County

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Ferry Traffic Bridge

Status: Open to traffic

Location: 47.332778,-122.506944

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Carries Ferry Traffic over Puget Sound @ Tahlequah
Design: other
Design Details: Vertical lift
Total Length: 384.9 Feet
Span Length: 89.9 Feet

Overview: Vertical lift bridge over Puget Sound @ Tahlequah on Ferry Traffic in Tacoma
History: Built 1954; rehabilitated 1994
Built: 1954

Location: King County

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Ferry Traffic Bridge

Status: Open to traffic

Location: 47.602500,-122.339167

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Carries Ferry Traffic over Elliott Bay
Design: other
Design Details: Vertical lift
Total Length: 1230.0 Feet
Span Length: 89.9 Feet

Overview: Vertical lift bridge over Elliott Bay on Ferry Traffic in Seattle
History: Built 1964; rehabilitated 1993
Built: 1964

Location: King County

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Ferry Traffic Bridge

Status: Open to traffic

Location: 47.601944,-122.339167

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Carries Ferry Traffic over Puget Sound @ Seattle
Design: other
Design Details: Vertical lift
Total Length: 89.9 Feet
Span Length: 89.9 Feet

Overview: Vertical lift bridge over Puget Sound @ Seattle on Ferry Traffic in Seattle
History: Built 1971; rehabilitated 1993
Built: 1971

Location: King County

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Foss River Road Bridge

Status: Open to traffic

Location: 47.704444,-121.305278

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Carries Foss River Road over Foss River
Design: truss/pony/warren
Design Details: Pony truss
Total Length: 120.1 Feet
Span Length: 80.1 Feet

Overview: Pony truss bridge over Foss River on Foss River Road
History: Built 1951
Built: 1951

Location: King County

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208554

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Foss River Road Bridge

View from East

Photo taken by K. A. Erickson on August 12, 2011

208555

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Foss River Road Bridge

Connecting members

Photo taken by K. A. Erickson on August 12, 2011

208556

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Foss River Road Bridge

View from South

Photo taken by K. A. Erickson on August 12, 2011

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Green River Gorge Bridge

Status: Open to traffic (one lane)

Location: 47.301383,-121.950293

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Carries Green River Gorge Bridge Road over Green River
Design: truss/deck/baltimore
Design Details: Baltimore Petit deck truss
Total Length: 437.0 Feet
Span Length: 283.2 Feet

Overview: Baltimore Petit deck truss bridge over Green River on Green River Gorge Bridge Road
History: Built 1914; Closed & rehabilitated 1988; Rehabilitated again 2001
Built: 1914

Location: King County

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366012

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Postcard provided by the Boston Public Library

400315

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Public Domain: Published Prior to 1923

417629

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Old Franklin Bridge under construction

Black Diamond Historical Society

417630

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Franklin Bridge stoplight

This is a one-way bridge, controlled by a stoplight.

Photo taken by John Anderson in December 2014

417631

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Franklin Bridge construction

Black Diamond Historical Society

497069

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Green River Gorge Bridge

Photo from old postcard

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Fremont Bridge

Status: Open to traffic

Location: 47.647667,-122.349861

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Carries Fremont Avenue North over Lake Washington Ship Canal
Design: truss/pony/pratt
Design Details: Pratt pony truss bascule, double leaf fixed trunnion type.
Total Length: 316.9 Feet
Span Length: 0.0 Feet

Overview: Bascule bridge over Lake Washington Ship Canal on Fremont Avenue North in Seattle
History: Built 1917
Built: 1917

Location: King County

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254763

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Looking east

Aurora Bridge is in the foreground

Photo taken by Jann Mayer in May 2013

260695

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Drawing

Drawing made by Douglas Butler

291747

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Fremont Bridge

Shows a operators house

Photo taken by Douglas Butler in April 2013

291748

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Fremont Bridge

Raised

Photo taken by Douglas Butler in September 2013

292674

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Fremont Bridge

Seattle WA

Photo taken by Douglas Butler in April 2013

306327

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Fremont Bridge

Looking SW

Photo taken by Royce and Bobette Haley in August 2014

306328

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Fremont Bridge

Looking SW

Photo taken by Royce and Bobette Haley in August 2014

306329

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Fremont Bridge

Looking SW

Photo taken by Royce and Bobette Haley in August 2014

306330

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Fremont Bridge

Looking SW

Photo taken by Royce and Bobette Haley in August 2014

306331

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Fremont Bridge

Looking West

Photo taken by Royce and Bobette Haley in August 2014

306332

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Fremont Bridge

Looking West

Photo taken by Royce and Bobette Haley in August 2014

306333

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Fremont Bridge

Plaque on north end

Photo taken by Royce and Bobette Haley in August 2014

306334

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Fremont Bridge

Looking SW

Photo taken by Royce and Bobette Haley in August 2014

306335

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Fremont Bridge

Looking South

Photo taken by Royce and Bobette Haley in August 2014

306336

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Fremont Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

306337

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Fremont Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

306338

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Fremont Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

306339

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Fremont Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

306340

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Fremont Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

306341

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Fremont Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

306342

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Fremont Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

306343

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Fremont Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

306344

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Fremont Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

306345

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Fremont Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

306346

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Fremont Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

306347

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Fremont Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

306348

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Fremont Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

306349

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Fremont Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

306350

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Fremont Bridge

Looking SW

Photo taken by Royce and Bobette Haley in August 2014

306351

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Fremont Bridge

Looking SW

Photo taken by Royce and Bobette Haley in August 2014

306352

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Fremont Bridge

Looking SW

Photo taken by Royce and Bobette Haley in August 2014

306353

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Fremont Bridge

Looking SW

Photo taken by Royce and Bobette Haley in August 2014

306354

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Fremont Bridge

Looking West

Photo taken by Royce and Bobette Haley in August 2014

306355

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Fremont Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

306356

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Fremont Bridge

Looking West

Photo taken by Royce and Bobette Haley in August 2014

306357

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Fremont Bridge

Looking SW

Photo taken by Royce and Bobette Haley in August 2014

349217

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Fremont Bridge

Raising for ship traffic

Photo taken by Douglas Butler

421785

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Fremont Bridge

Photo taken by Richard Doody in December 2009

421786

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Fremont Bridge

Photo taken by Richard Doody in December 2009

421787

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Fremont Bridge

Photo taken by Richard Doody in December 2009

421788

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Fremont Bridge

Photo taken by Richard Doody in December 2009

421789

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Fremont Bridge

Photo taken by Richard Doody in December 2009

421790

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Fremont Bridge

Photo taken by Richard Doody in December 2009

421791

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Fremont Bridge

Photo taken by Richard Doody in December 2009

421792

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Fremont Bridge

Photo taken by Richard Doody in December 2009

421793

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Fremont Bridge

Photo taken by Richard Doody in December 2009

421794

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Fremont Bridge

Photo taken by Richard Doody in December 2009

421795

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Fremont Bridge

Photo taken by Richard Doody in December 2009

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GREEN RIVER 5 KM D/S HHD Bridge

Status: Open to traffic

Location: 47.300000,-121.838333

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Carries BR NO 79 ACCESS Road over GREEN RIVER 5 KM D/S HHD
Design: truss/through
Design Details: Through truss
Total Length: 250.0 Feet
Span Length: 150.9 Feet

Overview: Through truss bridge over GREEN RIVER 5 KM D/S HHD on BR NO 79 ACCESS Road in Palmer
History: Built 1910; rehabilitated 1971
Built: 1910

Location: King County

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Green River Bridge

Status: Open to traffic

Location: 47.302500,-122.177222

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Carries WA 18 over Green River
Design: truss/through/polygonal
Design Details: Polygonal Warren through truss
Total Length: 371.1 Feet
Span Length: 200.1 Feet

Overview: Through truss bridge over Green River on WA 18 in Lake Morton-Berrydale
History: Built 1959
Built: 1959

Location: King County

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306358

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Green River Bridge

Looking North

Photo taken by Royce and Bobette Haley in August 2014

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Green River Bridge

Status: Lost to history
King County Road Services - Capital Improvement Program Alvord T Bridge #3130 (New # 1026789) Full demolition and removal of the existing bridge. Demolition completed by September 2013.

Location: 47.369749,-122.235922

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Carries S. 3rd Avenue over Green River
Design: truss/through/pratt
Design Details: Riveted Pratt through truss
Total Length: 274.9 Feet
Span Length: 132.9 Feet

Overview: Lost Pratt through truss bridge over Green River on S. 3rd Avenue in Kent
History: Built 1914; rehabilitated 1970; removed 2013
Built: 1914

Location: King County

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255873

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Alvord T Bridge

View from North

Photo taken by K. A. Erickson in June 2013

255874

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Alvord T Bridge

Oblique view on East

Photo taken by K. A. Erickson in June 2013

255875

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Alvord T Bridge

Below Deck View looking South

Photo taken by K. A. Erickson in June 2013

255876

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Alvord T Bridge

Oblique view on West

Photo taken by K. A. Erickson in June 2013

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Green River Bridge

Status: Open to traffic

Location: 47.278668,-122.038942

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Carries 228 Place SE over Green River
Design: suspension/stayed
Design Details: Cable-stayed
Total Length: 361.9 Feet
Span Length: 230.0 Feet

Overview: Cable-stayed bridge over Green River on 228 Place SE
History: Built 1991
Built: 1991

Location: King County

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Green River Bridge

Status: Open to traffic

Location: 47.278333,-121.991667

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Carries WA 169 over Green River
Design: truss/deck
Design Details: Deck truss
Total Length: 688.0 Feet
Span Length: 147.0 Feet

Overview: Deck truss bridge over Green River on WA 169
History: Built 1932
Built: 1932

Location: King County

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462377

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Green River Bridge

1939 view

Photo from JoAnne Matsumura collection

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I-5 Bridge

Status: Open to traffic

Location: 47.606667,-122.330000

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Carries 5TH-EXP TUNNEL over I-5
Design: tunnel
Design Details: Tunnel
Total Length: 630.9 Feet
Span Length: 0.0 Feet

Overview: Tunnel over I-5 on 5TH-EXP TUNNEL in Seattle
History: Built 1964
Built: 1964

Location: King County

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I-90 Bridge

Status: Open to traffic

Location: 47.590000,-122.305000

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Carries I-90 RAMP over I-90
Design: tunnel
Design Details: Tunnel
Total Length: 371.1 Feet
Span Length: 0.0 Feet

Overview: Tunnel over I-90 on I-90 RAMP in Seattle
History: Built 1992
Built: 1992

Location: King County

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Baring Bridge

Status: Open to traffic

Location: 47.765278,-121.480278

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Carries NE Index Creek Road over South Fork Skykomish River
Design: suspension/wire
Design Details: Wire suspension
Total Length: 339.9 Feet
Span Length: 272.0 Feet

Overview: Suspension bridge over South Fork Skykomish River on NE Index Creek Road in Baring
History: Built 1953
Built: 1953

Location: King County

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297335

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Baring Bridge

Photo taken by C Hanchey in August 2014

297336

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Baring Bridge

Photo taken by C Hanchey in August 2014

297337

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Baring Bridge

Photo taken by C Hanchey in August 2014

376790

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Photo submitted by Eric

376789

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Photo submitted by Eric

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Interlaken Boulevard Overpass

Status: Open to traffic

Location: 47.633297,-122.299966

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Carries E. Interlaken Blvd. over 26th Avenue E
Design: arch/deck
Design Details: Arch
Total Length: 61.0 Feet
Span Length: 41.0 Feet

Overview: Concrete arch bridge over 26th Avenue on E. Interlaken Blvd. in Seattle
History: Built 1912
Built: 1912

Location: King County

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462378

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Interlaken Boulevard Overpass

Photo taken by Joe Mabel

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Jones Road Bridge

Status: Replaced by a pre-cast concrete girder bridge in 2003

Location: 47.458256,-122.078695

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Carries Jones Road over Cedar River
Design: truss
Design Details: Truss
Total Length: 277.9 Feet
Span Length: 0.0 Feet

Overview: Truss bridge over Cedar River on Jones Road
History: Built 1912, Replaced 2003
Built: 1912

Location: King County

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477257

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Jones Road Bridge

April 1934 view

Photo from King County Archives

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Meeker Street Bridge

Status: Open to traffic

Location: 47.378447,-122.268670

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Carries Meeker Street over Green River
Design: truss/through/warren
Design Details: Warren through truss
Total Length: 245.1 Feet
Span Length: 240.2 Feet

Overview: Warren through truss bridge over Green River on Meeker Street in Kent
History: Built 1958
Built: 1958

Location: King County

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502295

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Photo posted John Bernhisel in April 2009

502313

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Photo taken by John Bernhisel in August 2021

502314

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Photo taken by John Bernhisel in August 2021

502315

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Photo taken by John Bernhisel in August 2021

502316

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Photo taken by John Bernhisel in August 2021

502317

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Photo taken by John Bernhisel in August 2021

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Aurora Avenue Bridge

Status: Open to traffic

Location: 47.646838,-122.347410

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Carries Aurora Avenue / WA 99 over Lake Union
Design: truss/deck/warren
Design Details: Cantilevered deck truss
Total Length: 2955.2 Feet
Span Length: 799.9 Feet

Overview: Deck truss bridge over Lake Union on Aurora Ave./WA 99 in Seattle
History: Built 1931
Built: 1931

Location: King County

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193607

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Overview.

Photo taken by Historic American Engineering Record

193608

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General View Of Aurora Bridge Looking West Up The Washington Ship Canal From The East Bank Of Lake Union

Photo taken by Historic American Engineering Record

193609

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View West From Same Camera Station With Longer Lens

Photo taken by Historic American Engineering Record

193610

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North Cantilever With Concrete Piers And Approach Viaduct Looking 010 Degrees North

Photo taken by Historic American Engineering Record

193611

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Detail Center Span Between North And South Cantilevers

Photo taken by Historic American Engineering Record

193612

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South Cantilever Looking Se

Photo taken by Historic American Engineering Record

193613

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Complete Span From Nw Looking Se

Photo taken by Historic American Engineering Record

193614

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Concrete Support Piers Looking South

Photo taken by Historic American Engineering Record

193615

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Detail Of North Pier

Photo taken by Historic American Engineering Record

193616

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Detail Of North Cantilever Pier And Approach Viaduct Piers

Photo taken by Historic American Engineering Record

193617

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North Approach Viaduct Piers Looking North

Photo taken by Historic American Engineering Record

193618

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Below North Approach Viaduct Looking South

Photo taken by Historic American Engineering Record

193619

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Aurora Avenue Bridge Troll At North End Of Bridge

Photo taken by Historic American Engineering Record

254761

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Looking west

Fremont Bridge is in the background

Photo taken by Jann Mayer in May 2013

305890

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Aurora Bridge

Looking West. Freemont Bridge can be seen between the cantilever spans

Photo taken by Royce and Bobette Haley in August 2014

305891

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Aurora Bridge

Looking SW

Photo taken by Royce and Bobette Haley in August 2014

305892

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Aurora Bridge

Connection between cantilever and mid truss section

Photo taken by Royce and Bobette Haley in August 2014

305893

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Aurora Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

305894

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Aurora Bridge

South Cantilever

Photo taken by Royce and Bobette Haley in August 2014

305895

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Aurora Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

305896

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Aurora Bridge

North cantilever

Photo taken by Royce and Bobette Haley in August 2014

305897

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Aurora Bridge

Detail cantilever and mid truss conection

Photo taken by Royce and Bobette Haley in August 2014

305898

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Aurora Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

305899

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Aurora Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

305900

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Aurora Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

305901

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Aurora Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

305902

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Aurora Bridge

Looking North at north approach

Photo taken by Royce and Bobette Haley in August 2014

305903

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Aurora Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

305904

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Aurora Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

305905

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Aurora Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

305906

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Aurora Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

305907

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Aurora Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

305908

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Aurora Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

305909

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Aurora Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

305910

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Aurora Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

305911

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Aurora Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

305912

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Aurora Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

305913

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Aurora Bridge

Looking East

Photo taken by Royce and Bobette Haley in August 2014

305914

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Aurora Bridge

Looking East

Photo taken by Royce and Bobette Haley in August 2014

305915

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Aurora Bridge

Looking SE

Photo taken by Royce and Bobette Haley in August 2014

305916

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Aurora Bridge

Looking SE

Photo taken by Royce and Bobette Haley in August 2014

305917

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Aurora Bridge

Looking SE at south cantilever

Photo taken by Royce and Bobette Haley in August 2014

305918

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Aurora Bridge

Looking South at south cantilever

Photo taken by Royce and Bobette Haley in August 2014

421796

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Aurora Avenue Bridge

Photo taken by Richard Doody in December 2009

421797

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Aurora Avenue Bridge

Photo taken by Richard Doody in December 2009

421798

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Aurora Avenue Bridge

Photo taken by Richard Doody in December 2009

496433

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Aurora Avenue Bridge

Photo from old postcard

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Washington Park Arboretum Footbridge

Status: Open to pedestrians

Location: 47.639439,-122.296898

View Google Map

Carries Washington Park Arboretum Pedestrian trail over Lake Washington Boulevard
Design: arch/deck/closed
Design Details: Arch
Total Length: 180.1 Feet
Span Length: 0.0 Feet

Overview: Arch bridge over Lake Washington Blvd. E on pedestrian trail in Seattle
History: Built 1910
Built: 1910

Location: King County

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280032

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Photo taken by Bob Cortright, Bridge Ink

307386

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Washington Park Arboretum Footbridge

Pano Looking North

Photo taken by Royce and Bobette Haley

307387

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Washington Park Arboretum Footbridge

Looking South

Photo taken by Royce and Bobette Haley in August 2014

307388

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Washington Park Arboretum Footbridge

Looking SE

Photo taken by Royce and Bobette Haley in August 2014

307389

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Washington Park Arboretum Footbridge

Looking West

Photo taken by Royce and Bobette Haley in August 2014

307390

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Washington Park Arboretum Footbridge

Looking West

Photo taken by Royce and Bobette Haley in August 2014

307391

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Washington Park Arboretum Footbridge

Looking East

Photo taken by Royce and Bobette Haley in August 2014

307392

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Washington Park Arboretum Footbridge

Looking North

Photo taken by Royce and Bobette Haley in August 2014

307393

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Washington Park Arboretum Footbridge

Looking North

Photo taken by Royce and Bobette Haley in August 2014

307394

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Washington Park Arboretum Footbridge

Looking North

Photo taken by Royce and Bobette Haley in August 2014

307395

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Washington Park Arboretum Footbridge

Looking NW

Photo taken by Royce and Bobette Haley in August 2014

307396

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Washington Park Arboretum Footbridge

Looking NW

Photo taken by Royce and Bobette Haley in August 2014

307397

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Washington Park Arboretum Footbridge

Looking North

Photo taken by Royce and Bobette Haley in August 2014

307398

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Washington Park Arboretum Footbridge

Looking NE

Photo taken by Royce and Bobette Haley in August 2014

307399

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Washington Park Arboretum Footbridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

307400

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Washington Park Arboretum Footbridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

307401

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Washington Park Arboretum Footbridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

307402

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Washington Park Arboretum Footbridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

307403

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Washington Park Arboretum Footbridge

Looking NE

Photo taken by Royce and Bobette Haley in August 2014

307404

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Washington Park Arboretum Footbridge

Looking NW

Photo taken by Royce and Bobette Haley in August 2014

480587

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Arboretum Bridge

Photo from Seattle NowandThen

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Lake Washington Blvd. E. Bridge

Status: Open to traffic

Location: 0.000000,0.000000

View Google Map

Carries None over Lake Washington Blvd. E.
Design: arch/deck
Design Details: Arch
Total Length: 87.9 Feet
Span Length: 87.9 Feet

Overview: Concrete arch bridge over Lake Washington Blvd. E. on None in Seattle
History:
Built:

Location: King County

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I-5 - Lake Washington Ship Canal Bridge

Status: Open to traffic

Location: 47.652870,-122.322482

View Google Map

Carries I-5 over Lake Washington Ship Canal
Design: truss/deck/warren
Design Details: Continuous Warren deck truss
Total Length: 4429.4 Feet
Span Length: 551.9 Feet

Overview: Deck truss bridge over Lake Washington Ship Canal on I-5 in Seattle
History: Built 1962
Built: 1962

Location: King County

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254760

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Looking east from the air

Universite Bridge in the background

Photo taken by Jann Mayer in May 2013

273776

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North end of the Ship Canal Bridge

North end of the Ship Canal Bridge. Photo taken from the float at the Ivar's Salmon House. HDR photo.

Photo taken by Evin Fairchild in November 2013

306681

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I-5 - Lake Washington Ship Canal Bridge

Looking NW-University Bridge in front

Photo taken by Royce and Bobette Haley in August 2014

306682

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I-5 - Lake Washington Ship Canal Bridge

From University Bridge

Photo taken by Royce and Bobette Haley in August 2014

306683

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I-5 - Lake Washington Ship Canal Bridge

From University Bridge

Photo taken by Royce and Bobette Haley in August 2014

306684

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I-5 - Lake Washington Ship Canal Bridge

From University Bridge

Photo taken by Royce and Bobette Haley in August 2014

306685

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I-5 - Lake Washington Ship Canal Bridge

From University Bridge

Photo taken by Royce and Bobette Haley in August 2014

306686

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I-5 - Lake Washington Ship Canal Bridge

From University Bridge

Photo taken by Royce and Bobette Haley in August 2014

306687

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I-5 - Lake Washington Ship Canal Bridge

From University Bridge-draw span is up on left

Photo taken by Royce and Bobette Haley in August 2014

306688

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I-5 - Lake Washington Ship Canal Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

306689

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I-5 - Lake Washington Ship Canal Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

306690

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I-5 - Lake Washington Ship Canal Bridge

Crossing Eastlake Ave looking SE

Photo taken by Royce and Bobette Haley in August 2014

306691

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I-5 - Lake Washington Ship Canal Bridge

Crossing Furman Ave looking NW

Photo taken by Royce and Bobette Haley in August 2014

306692

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I-5 - Lake Washington Ship Canal Bridge

Crossing Furman Ave looking NW

Photo taken by Royce and Bobette Haley in August 2014

306693

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I 5 Washington ship canal Pano1

Pano

Photo taken by Royce and Bobette Haley in October 2014

307350

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I-5 - Lake Washington Ship Canal Bridge

Looking SW-University Bridge draw span is open

Photo taken by Royce and Bobette Haley in August 2014

477101

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Photo taken by Patrick Gurwell in July 2016

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McGraw Street Bridge

Status: Open to traffic

Location: 47.639952,-122.352162

View Google Map

Carries McGraw Street over Ravine
Design: arch/deck/open
Design Details: Open-spandrel arch
Total Length: 237.9 Feet
Span Length: 140.1 Feet

Overview: Concrete arch bridge over Ravine on McGraw Street in Seattle
History: Built 1935
Built: 1935

Location: King County

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I-90 - Mercer Island Tunnel

Status: Open to traffic

Location: 47.591858,-122.242825

View Google Map

Carries I-90 over
Design: tunnel
Design Details: Tunnel
Total Length: 1112.9 Feet
Span Length: 0.0 Feet

Overview: Tunnel on I-90 at Mercer Island
History: Built 1989
Built: 1989

Location: King County

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306864

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I-90 - Mercer Island Tunnel

Westbound-All 4 tunnels

Photo taken by Royce and Bobette Haley in August 2014

306865

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I-90 - Mercer Island Tunnel

Westbound-East portal

Photo taken by Royce and Bobette Haley in August 2014

306866

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I-90 - Mercer Island Tunnel

Westbound-East portal

Photo taken by Royce and Bobette Haley in August 2014

306867

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I-90 - Mercer Island Tunnel

Westbound

Photo taken by Royce and Bobette Haley in August 2014

306868

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I-90 - Mercer Island Tunnel

Westbound-West portal

Photo taken by Royce and Bobette Haley in August 2014

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Mill Creek Bridge

Status: Open to traffic

Location: 47.366667,-122.250000

View Google Map

Carries WA 181 over Mill Creek
Design: arch/deck/closed
Design Details: Closed-spandrel arch
Total Length: 35.1 Feet
Span Length: 29.9 Feet

Overview: Concrete arch bridge over Mill Creek on 68th Avenue South in Kent
History: Built 1915
Built: 1915

Location: King County

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197739

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Mill Creek Bridge

View from Northwest

Photo taken by K. A. Erickson in April 2011

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Hec-Ed Bridge

Status: Open to pedestrians

Location: 47.652696,-122.303035

View Google Map

Carries University of Washington Pathway over Montlake Boulevard
Design: frame/concrete
Design Details: Concrete rigid frame
Total Length: 221.1 Feet
Span Length: 0.0 Feet

Overview: Concrete rigid frame bridge over Montlake Boulevard on University of Washington Pathway
History: Built 1938
Built: 1938

Location: King County

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Montlake Bridge

Status: Open to traffic
Slated to have a new bridge built next to it to form a one-way couplet.

Location: 47.647262,-122.304585

View Google Map

Carries WA 513 over Montlake Cut
Design: truss/deck/pratt
Design Details: Pratt deck truss bascule
Total Length: 345.2 Feet
Span Length: 182.1 Feet

Overview: Bascule bridge over Montlake Cut on WA 513 in Seattle
History: Built 1925; rehabilitated 1999
Built: 1925

Location: King County

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190258

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Portal View.

Photo From WSDOT State Route Web

190259

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360 View.

Photo From WSDOT State Route Web

193589

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Western Elevation Of Montlake Bridge

Photo taken by Historic American Engineering Record

193590

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Lift Spans From Close Range

Photo taken by Historic American Engineering Record

193591

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East Elevation

Photo taken by Historic American Engineering Record

193592

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North Portal

Photo taken by Historic American Engineering Record

193593

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Bridge In Open Position From The Nw

Photo taken by Historic American Engineering Record

193594

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Detail Of The North Tower From The Sw

Photo taken by Historic American Engineering Record

193595

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South Tower From The Ne

Photo taken by Historic American Engineering Record

193596

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North Tower In Elevation At Open Position

Photo taken by Historic American Engineering Record

193597

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North Tower In Open Position

Photo taken by Historic American Engineering Record

193598

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Detail Finial, W Side Of North Approach, Shot From Se

Photo taken by Historic American Engineering Record

193599

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Ray Vanderhoff, Bridge Tender At Control Board

Photo taken by Historic American Engineering Record

193600

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View Of Trunnion From S (Se Trunnion) Looking North

Photo taken by Historic American Engineering Record

193601

Click to visit page.

View Of Bull Gear (In Direction Figure Is Looking), Trunnion (Sw Corner) To The Right Of Figure.

Photo taken by Historic American Engineering Record

193602

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Inside Of Machinery Room, Looking West. View Of Differential, Motors And Drive Shaft

Photo taken by Historic American Engineering Record

193603

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Gear Box At Se Corner Of Span, Counterweight, Shaft

Photo taken by Historic American Engineering Record

193604

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Gears For Transition Between Drive Shafts, Se Of Span And Counterweight

Photo taken by Historic American Engineering Record

193605

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Final Reduction Gears To Bull Gear For Actual Lifting Of Bridge

Photo taken by Historic American Engineering Record

193606

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Center Lock View From South At Center Of Span

Photo taken by Historic American Engineering Record

260369

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Drawing

Drawing made by Douglas Butler

260370

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Drawing

Drawing made by Douglas Butler

306884

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Montlake Bridge

Northbound

Photo taken by Royce and Bobette Haley in August 2014

306885

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Montlake Bridge

Northbound

Photo taken by Royce and Bobette Haley in August 2014

306886

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Montlake Bridge

Northbound-North tower

Photo taken by Royce and Bobette Haley in August 2014

306887

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Montlake Bridge

Looking SW-South tower

Photo taken by Royce and Bobette Haley in August 2014

306888

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Montlake Bridge

Looking SW

Photo taken by Royce and Bobette Haley in August 2014

306889

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Montlake Bridge

Looking SW-South tower

Photo taken by Royce and Bobette Haley in August 2014

306890

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Montlake Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

306891

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Montlake Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

306892

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Montlake Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

306893

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Montlake Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

306894

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Montlake Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

306895

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Montlake Bridge

Southbound

Photo taken by Royce and Bobette Haley in August 2014

474213

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Photo taken by Patrick Gurwell in July 2019

474214

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Photo taken by Patrick Gurwell in July 2019

474215

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Photo taken by Patrick Gurwell in July 2019

497056

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Montlake Bridge

Photo from old postcard

497057

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Montlake Bridge

July 16, 1936

Photo from Seattle Municipal Archives

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Mount Si Road Bridge

Status: Replaced by a NEW THROUGH TRUSS bridge in 2008

Location: 47.486667,-121.760000

View Google Map

Carries Mount Si Road over Middle Fork Snoqualmie River
Design: truss/through/parker
Design Details: Pin-connected, 9-panel Parker through truss
Total Length: 290.0 Feet
Span Length: 171.9 Feet

Overview: Through truss bridge over Middle Fork Snoqualmie River on Mount Si Road in Tanner
History: Built 1904; rehabilitated 1955, Replaced 2008-09
Built: 1904

Location: King County

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132893

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Mt. Si Road Bridge

Mount Si Bridge built on 1930 bridge piers. this photo was taken after 1955 construction but before 1959 flood erosion.

Photo Courtesy of King County Department of Transportation

132894

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Construction Photo

Mt.Si bridge being erected over the Middle Fork Snoqualmie in 1955 with Mt. Si in the background.

Photo Courtesy of King County Department of Transportation

132895

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Old and New Mt. Si Road Bridge

The old and new bridges, before the new bridge was connected to the road.

Photo Courtesy of King County Department of Transportation

132896

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Removing the deck of the old bridge

Photo Courtesy of King County Department of Transportation

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I-90 - Mt. Baker Ridge Tunnel

Status: Open to traffic

Location: 47.589940,-122.290697

View Google Map

Carries I-90 over Mt. Baker Ridge
Design: tunnel
Design Details: Tunnel
Total Length: 1476.1 Feet
Span Length: 0.0 Feet

Overview: Pair of tunnels under Mt. Baker Ridge on I-90 in Seattle
History: Built 1940 and twinned in 1989
Built: 1940

Location: King County

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133714

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Interstate 90 Looking West Toward The Tunnels

The original 1940 tunnels are on the left and the left floating bridge carries the eastbound lanes. This bridge went down in a 1990 storm and was rebuilt wider. The newer bridge is on the right with its wider tunnel to carry the westbound lanes and carpool lanes. It served both directions while the sunken eastbound bridge was being rebuilt.

Photo taken by Quinn Phelan in March 2004

133715

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Seattle in the Background

Looking West from Mercer Island.

Photo taken by Quinn Phelan in March 2004

133716

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Looking East

From a vantage point on top of the tunnel entrance. Mercer Island and Bellevue are in the distance.

Photo taken by Quinn Phelan in March 2004

133721

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Looking Northeast

You can see the tunnel, floating bridges, and the city of Bellevue, WA in the background.

Photo courtesy of Wikipedia

133722

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Westbound Tunnel Portal

This newer tunnel also includes a 10 foot wide bike tunnel the entire length.

Photo courtesy WSDOT

133723

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Entering the Westbound Tunnel

You can see the observation deck above the portal.

Photo by WSDOT

193620

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Restored Original Entrance To The East Portal Of The Baker Ridge Tunnel, View Looking West

Photo taken by Historic American Engineering Record

193621

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I 90 West Bound And Transitional Lanes, Buses And Carpools Only, View Looking Nw

Photo taken by Historic American Engineering Record

193622

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Renovated Section Of Old Eastbound Tunnel Looking West

Photo taken by Historic American Engineering Record

193623

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Covered Section Of Original Tunnel Looking East

Photo taken by Historic American Engineering Record

193624

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Covered Section Looking West

Photo taken by Historic American Engineering Record

193625

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New Wiring And Infrastructure Between Excavated Ceiling And Interior Ceiling

Photo taken by Historic American Engineering Record

306859

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I-90 - Mt. Baker Ridge Tunnel

Westbound-Both tunnels

Photo taken by Royce and Bobette Haley in August 2014

306860

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I-90 - Mt. Baker Ridge Tunnel

Westbound-Both tunnels

Photo taken by Royce and Bobette Haley in August 2014

306861

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I-90 - Mt. Baker Ridge Tunnel

Westbound-Both tunnels

Photo taken by Royce and Bobette Haley in August 2014

306862

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I-90 - Mt. Baker Ridge Tunnel

Westbound-new tunnel

Photo taken by Royce and Bobette Haley in August 2014

306863

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I-90 - Mt. Baker Ridge Tunnel

Westbound-new tunnel

Photo taken by Royce and Bobette Haley in August 2014

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N-W Ramp Tunnel Bridge

Status: Open to traffic

Location: 47.625000,-122.328333

View Google Map

Carries N-W Ramp Tunnel over I-5
Design: tunnel
Design Details: Tunnel
Total Length: 888.2 Feet
Span Length: 0.0 Feet

Overview: Tunnel over I-5 on N-W Ramp Tunnel in Seattle
History: Built 1963
Built: 1963

Location: King County

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Newaukum Creek Bridge

Status: Open to traffic

Location: 47.243333,-122.038333

View Google Map

Carries SE 400th Street over Newaukum Creek
Design: culvert/concrete
Design Details: Arched concrete culvert
Total Length: 24.0 Feet
Span Length: 24.0 Feet

Overview: Concrete arch bridge over Newaukum Creek on SE 400th Street
History: Built 1927
Built: 1927

Location: King County

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Divider

193690

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Newaukum Creek Bridge

View from South

Photo taken by K. A. Erickson in January 2010

193992

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Newaukum Creek Bridge

View from North

Photo taken by K. A. Erickson in February 2011

193993

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Newaukum Creek Bridge

Close up view from North

Photo taken by K. A. Erickson in February 2011

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Pedestrian Wood Bridge

Status: Open to traffic

Location: 47.665000,-122.348333

View Google Map

Carries Pedestrian Wood over SR 99
Design: arch/deck
Design Details: Arch
Total Length: 77.1 Feet
Span Length: 77.1 Feet

Overview: Concrete arch bridge over SR 99 on Pedestrian Wood in Seattle
History: Built 1933
Built: 1933

Location: King County

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Pedestrian Wood Bridge

Status: Open to traffic

Location: 47.666667,-122.348333

View Google Map

Carries Pedestrian Wood over SR 99
Design: arch/deck
Design Details: Arch
Total Length: 77.1 Feet
Span Length: 77.1 Feet

Overview: Concrete arch bridge over SR 99 on Pedestrian Wood in Seattle
History: Built 1933
Built: 1933

Location: King County

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Pedestrian Traffic Bridge

Status: Open to traffic

Location: 0.000000,0.000000

View Google Map

Carries Pedestrian Traffic over Puget Sound @ Seattle
Design: other
Design Details: Vertical lift
Total Length: 120.1 Feet
Span Length: 120.1 Feet

Overview: Vertical lift bridge over Puget Sound @ Seattle on Pedestrian Traffic in Seattle
History: Built 1965
Built: 1965

Location: King County

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Pedestrian Traffic Bridge

Status: Open to traffic

Location: 0.000000,0.000000

View Google Map

Carries Pedestrian Traffic over Puget Sound @ Seattle
Design: other
Design Details: Vertical lift
Total Length: 120.1 Feet
Span Length: 120.1 Feet

Overview: Vertical lift bridge over Puget Sound @ Seattle on Pedestrian Traffic in Seattle
History: Built 1965
Built: 1965

Location: King County

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Pedestrians Bridge

Status: Open to traffic

Location: 47.621111,-122.195833

View Google Map

Carries Pedestrians over NE 12TH ST
Design: arch/through
Design Details: Through arch
Total Length: 386.2 Feet
Span Length: 0.0 Feet

Overview: Wooden arch bridge over NE 12TH ST on Pedestrians in Bellevue
History: Built 1969
Built: 1969

Location: King County

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Perimeter Road Bridge

Status: Open to traffic

Location: 0.000000,0.000000

View Google Map

Carries Perimeter Road over S 188TH ST
Design: tunnel
Design Details: Tunnel
Total Length: 71.9 Feet
Span Length: 71.9 Feet

Overview: Tunnel over S 188TH ST on Perimeter Road in SeaTac
History: Built 1993
Built: 1993

Location: King County

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Puget Sound Bridge

Status: Open to traffic

Location: 47.510556,-122.463611

View Google Map

Carries WA 160 over Puget Sound
Design: other
Design Details: Vertical lift
Total Length: 109.9 Feet
Span Length: 89.9 Feet

Overview: Vertical lift bridge over Puget Sound on WA 160 in Vashon
History: Built 1974; rehabilitated 1993
Built: 1974

Location: King County

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Queen Anne Drive Bridge

Status: Open to traffic

Location: 47.642254,-122.352426

View Google Map

Carries N. Queen Anne Drive over Ravine
Design: arch/deck/steel
Design Details: Steel arch
Total Length: 327.1 Feet
Span Length: 140.1 Feet

Overview: Steel arch bridge over Ravine on N. Queen Anne Drive in Seattle
History: Built 1935
Built: 1935

Location: King County

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190183

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Elevation.

Creative Commons Attribution-ShareAlike 2.0 Generic

Photo taken by By Flickr User cincodenada06

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Raging River Bridge

Status: Open to traffic

Location: 47.539722,-121.908611

View Google Map

Carries SE 68th Street over Raging River
Design: arch/deck/luten
Design Details: Concrete Luten Arch
Total Length: 49.9 Feet
Span Length: 49.9 Feet

Overview: Concrete arch bridge over Raging River on SE 68th Street
History: Built 1915
Built: 1915

Location: King County

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210394

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Raging River Bridge

View from South

Photo taken by K. A. Erickson on August 22, 2011

210395

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Raging River Bridge

Oblique view on Southeast

Photo taken by K. A. Erickson on August 22, 2011

210396

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Raging River Bridge

Road & deck view looking West

Photo taken by K. A. Erickson on August 22, 2011

375651

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Historical Photo.

Photo From 1917 Luten Catalog.

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Raging River Bridge

Status: Open to traffic

Location: 47.554723,-121.900428

View Google Map

Carries 328 Way SE over Raging River
Design: truss/modern/through/warren
Design Details: Through truss
Total Length: 125.0 Feet
Span Length: 120.1 Feet

Overview: Through truss bridge over Raging River on 328 Way SE in Fall City
History: Built 1998
Built: 1998

Location: King County

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210397

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Raging River Bridge

Southern Portal

Photo taken by K. A. Erickson on August 22, 2011

210398

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Raging River Bridge

Truss looking West

Photo taken by K. A. Erickson on August 22, 2011

210399

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Raging River Bridge

Information Plaque

Photo taken by K. A. Erickson on August 22, 2011

419352

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Photo taken by John Bernhisel in June 2016

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Ravenna-S Ramp Tu Bridge

Status: Open to traffic

Location: 47.675000,-122.320000

View Google Map

Carries Ravenna-S Ramp Tu over I-5
Design: tunnel
Design Details: Tunnel
Total Length: 27.9 Feet
Span Length: 27.9 Feet

Overview: Tunnel over I-5 on Ravenna-S Ramp Tu in Seattle
History: Built 1961
Built: 1961

Location: King County

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Roosevelt Way Tunn Bridge

Status: Open to traffic

Location: 47.682500,-122.317500

View Google Map

Carries Roosevelt Way Tunn over SR 522
Design: tunnel
Design Details: Tunnel
Total Length: 68.9 Feet
Span Length: 68.9 Feet

Overview: Tunnel over SR 522 on Roosevelt Way Tunn in Seattle
History: Built 1962
Built: 1962

Location: King County

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Ballard Bridge

Status: Open to traffic
At risk for demolition and replacement. Future being determined.

Location: 47.659809,-122.376215

View Google Map

Carries 15th Avenue W over Salmon Bay Waterway
Design: other
Design Details: Double-leaf trunnion bascule
Total Length: 295.0 Feet
Span Length: 0.0 Feet

Overview: Bascule bridge over Lake Washington Ship Canal on 15th Avenue W in Seattle
History: Built 1917
Built: 1917

Location: King County

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260365

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Ballard Bridge

Drawing made by Douglas Butler

291746

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Ballard Bridge

Closed

Photo taken by Douglas Butler in April 2013

292033

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Ballard Bridge

Seattle WA

Photo taken by Douglas Butler in April 2013

292673

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Ballard Bridge

Open of ships

Photo taken by Douglas Butler in April 2013

305919

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Ballard Bridge

Looking South

Photo taken by Royce and Bobette Haley in August 2014

305920

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Ballard Bridge

Looking South

Photo taken by Royce and Bobette Haley in August 2014

305921

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Ballard Bridge

Looking South

Photo taken by Royce and Bobette Haley in August 2014

305922

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Ballard Bridge

Looking South

Photo taken by Royce and Bobette Haley in August 2014

305923

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Ballard Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

305924

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Ballard Bridge

Looking South

Photo taken by Royce and Bobette Haley in August 2014

305925

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Ballard Bridge

Looking South

Photo taken by Royce and Bobette Haley in August 2014

305926

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Ballard Bridge

Looking SW

Photo taken by Royce and Bobette Haley in August 2014

305928

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Ballard Bridge

Looking SW

Photo taken by Royce and Bobette Haley in August 2014

305929

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Ballard Bridge

Looking SW

Photo taken by Royce and Bobette Haley in August 2014

305930

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Ballard Bridge

Looking SW

Photo taken by Royce and Bobette Haley in August 2014

315813

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Ballard Bridge Painting Project in Seattle

Seattle Department of Transportation

315814

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Ballard Bridge Painting Project in Seattle

Seattle Department of Transportation

315815

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Ballard Bridge Painting Project in Seattle

Seattle Department of Transportation

315816

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Ballard Bridge Painting Project in Seattle

Seattle Department of Transportation

315817

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Ballard Bridge Painting Project in Seattle

Seattle Department of Transportation

315818

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Ballard Bridge Painting Project in Seattle

Seattle Department of Transportation

315819

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Ballard Bridge Painting Project in Seattle

Seattle Department of Transportation

315820

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Ballard Bridge Painting Project in Seattle

Seattle Department of Transportation

315821

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Ballard bridge columns

SDOT is strengthening the Ballard Bridge to help it withstand a major earthquake. The photo above shows the columns as they looked before jackets were installed. Coffer boxes are built around the columns to provide water-free areas in which to install jackets. Once the jackets are installed, they are filled with concrete and the coffer box is removed.

Seattle Department of Transportation

315822

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Ballard Bridge columns with new jackets

Jackets were installed and then filled with concrete around the columns on the Ballard Bridge. This is one of the strategies used to strengthen the bridge so that it is better able to survive a major earthquake. Jan. 2013

Seattle Department of Transportation

315823

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View inside a form on the Ballard Bridge

An are under the bridge is prepped for pouring concrete for the Ballard Bridge seismic retrofit project. Jan. 2013

Seattle Department of Transportation

486158

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Ballard Bridge

March 1918 view with original wood trestle

Photo taken by Photo by James P. Lee, Courtesy UW Special Collections

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Sammamish River Bridge

Status: Open to traffic

Location: 47.682189,-122.132425

View Google Map

Carries NE 90th Street over Sammamish River
Design: arch/deck/open
Design Details: Open spandrel concrete arch bridge
Total Length: 220.2 Feet
Span Length: 0.0 Feet

Overview: Open spandrel arch bridge over Sammamish River on NE 90th Street in Redmond
History: Built 2001
Built: 2001

Location: King County

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Snoqualmie River Bridge

Status: Open to traffic

Location: 47.539218,-121.832697

View Google Map

Carries WA 202 over Snoqualmie River
Design: truss/through/parker
Design Details: Parker through truss
Total Length: 443.9 Feet
Span Length: 220.2 Feet

Overview: Through truss bridge over Snoqualmie River on WA 202 in Snoqualmie
History: Built 1931
Built: 1931

Location: King County

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Tolt Hill Road Bridge

Status: Replaced by a NEW THROUGH TRUSS bridge in 2008

Location: 47.638333,-121.926667

View Google Map

Carries NE Tolt Hill Road over Snoqualmie River
Design: truss/through/parker
Design Details: Parker through truss
Total Length: 695.9 Feet
Span Length: 200.1 Feet

Overview: Through truss bridge over Snoqualmie River on NE Tolt Hill Road
History: Built 1922; rehabilitated 1968, Replaced 2008
Built: 1922

Location: King County

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132910

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Tolt Road Bridge

Photo Courtesy of King County Department of Transportation

132911

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Tolt Road Bridge - Demolition

A crane is secured to the old truss.

Photo Courtesy of King County Department of Transportation

132912

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Tolt Road Bridge - Demolition

King county workers closely watch the procedure.

Photo Courtesy of King County Department of Transportation

132913

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Tolt Road Bridge - Demolition

The crane and barge float the old truss to the bank to be dismantled.

Photo Courtesy of King County Department of Transportation

133584

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New Tolt Hill Bridge

Completed in 2008.

Photo courtesy of King County DOT

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Meadowbrook Bridge

Status: Open to traffic

Location: 47.526806,-121.812191

View Google Map

Carries 394 Place SE/Meadowbrook Way SE over Snoqualmie River
Design: truss/through/parker
Design Details: Parker through truss
Total Length: 373.0 Feet
Span Length: 0.0 Feet

Overview: Parker through truss bridge over Snoqualmie River on 394 Place SE/Meadowbrook Way SE
History: Built 1921, rehabilitated 2005
Built: 1921

Location: King County

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297348

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Meadowbrook Bridge

Photo taken by C Hanchey in August 2014

297349

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Meadowbrook Bridge

Photo taken by C Hanchey in August 2014

297350

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Meadowbrook Bridge

Photo taken by C Hanchey in August 2014

474342

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Photo taken by Patrick Gurwell in July 2019

474343

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Photo taken by Patrick Gurwell in July 2019

474344

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Photo taken by Patrick Gurwell in July 2019

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Novelty Bridge

Status: Open to traffic

Location: 47.709170,-121.995479

View Google Map

Carries NE 124th Street over Snoqualmie River
Design: arch/through/steel
Design Details: Steel through arch
Total Length: 623.1 Feet
Span Length: 295.0 Feet

Overview: Steel through arch bridge over Snoqualmie River on NE 124th Street in Union Hill-Novelty Hill
History: Built 2000
Built: 2000

Location: King County

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477285

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Novelty Bridge

Photo from King County WA

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South Fork Skykomish River Bridge

Status: Open to traffic

Location: 47.714040,-121.341238

View Google Map

Carries US 2 over South Fork Skykomish River
Design: truss/through/polygonal/verticals
Design Details: Polygonal Warren through truss with all verticals
Total Length: 338.9 Feet
Span Length: 243.1 Feet

Overview: Through truss bridge over South Fork Skykomish River on US 2
History: Built 1938
Built: 1938

Location: King County

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South Fork Skykomish River Bridge

Status: Open to traffic

Location: 47.710000,-121.361667

View Google Map

Carries 5th Street N over South Fork Skykomish River
Design: truss/through/polygonal
Design Details: Through truss
Total Length: 278.9 Feet
Span Length: 220.2 Feet

Overview: Warren through truss bridge over South Fork Skykomish River on 5th Street N in Skykomish
History: Built 1939
Built: 1939

Location: King County

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219893

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Skykomish Bridge

Southern Portal

Photo taken by K. A. Erickson in November 2011

219894

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Skykomish Bridge

Northern Portal

Photo taken by K. A. Erickson in November 2011

219895

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Skykomish Bridge

Re-dedication plaque

Photo taken by K. A. Erickson in November 2011

219896

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Skykomish Bridge

View from East

Photo taken by K. A. Erickson in November 2011

383665

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Photo taken by Mike Garland in August 2016

383666

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Photo taken by Mike Garland in August 2016

383663

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South Approach

Photo taken by Mike Garland in August 2016

383664

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Photo taken by Mike Garland in August 2016

383662

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Photo taken by Mike Garland in August 2016

383659

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Photo taken by Mike Garland in August 2016

383660

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Photo taken by Mike Garland in August 2016

383661

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Photo taken by Mike Garland in August 2016

383658

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Looking West

Photo taken by Mike Garland in August 2016

383656

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Approach Detail

Photo taken by Mike Garland in August 2016

383657

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Looking West

Photo taken by Mike Garland in August 2016

383655

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South Approach

Photo taken by Mike Garland in August 2016

383654

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South Approach

Photo taken by Mike Garland in August 2016

383422

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Photo taken by Mike Garland in August 2016

383298

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South Approach

Photo taken by Mike Garland in August 2016

383297

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Bridge Detail

Photo taken by Mike Garland in August 2016

383296

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South Approach

Photo taken by Mike Garland in August 2016

383295

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Planter Box

There are two of these at each end of the bridge.

Photo taken by Mike Garland in August 2016

383294

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Bridge Detail

Photo taken by Mike Garland in August 2016

383293

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Pedestrian Walkway

Photo taken by Mike Garland in August 2016

383292

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Dedication Plaque

Photo taken by Mike Garland in August 2016

383291

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Bridge Detail

Photo taken by Mike Garland in August 2016

383290

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North Portal

Photo taken by Mike Garland in August 2016

383289

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The build date of the bridge is stamped in the approach.

Photo taken by Mike Garland in August 2016

383288

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Bridge Detail

Photo taken by Mike Garland in August 2016

383287

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North Approach

Photo taken by Mike Garland in August 2016

383286

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North Approach

Photo taken by Mike Garland in August 2016

383285

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Photo taken by Mike Garland in August 2016

502492

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Photo taken by John Bernhisel in August 2021

502493

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Photo taken by John Bernhisel in August 2021

502494

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Photo taken by John Bernhisel in August 2021

502495

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Photo taken by John Bernhisel in August 2021

502496

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Photo taken by John Bernhisel in August 2021

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South Fork Snoqualmie River Bridge

Status: Open to traffic

Location: 47.394444,-121.454444

View Google Map

Carries over South Fork Snoqualmie River
Design: arch/deck
Design Details: Arch
Total Length: 210.0 Feet
Span Length: 0.0 Feet

Overview: Concrete arch bridge over South Fork Snoqualmie River
History: Built 1927
Built: 1927

Location: King County

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South Fork Snoqualmie River Bridge

Status: Lost

Location: 47.406191,-121.443304

View Google Map

Carries over South Fork Snoqualmie River
Design: truss
Design Details: Truss
Total Length: 103.0 Feet
Span Length: 103.0 Feet

Overview: Lost truss bridge over South Fork Snoqualmie River
History: Built 1920
Built: 1920

Location: King County

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Spokane Street Bridge

Status: Open to traffic

Location: 47.571387,-122.353639

View Google Map

Carries SW Spokane Street over W. Waterway of Duwamish River
Design: other
Design Details: Swing
Total Length: 836.0 Feet
Span Length: 440.0 Feet

Overview: Swing bridge over W. Waterway of Duwamish River on SW Spokane Street in Seattle
History: Built 1991
Built: 1991

Location: King County

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197262

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Spokane Street Bridge

View from North

Photo taken by K. A. Erickson on April 10, 2011

197263

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Spokane Street Bridge

Oblique view

Photo taken by K. A. Erickson on April 10, 2011

197264

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Spokane Street Bridge

Below Deck View

Photo taken by K. A. Erickson on April 10, 2011

197265

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Spokane Street Bridge

Bridge Opening – Viewed from North

Photo taken by K. A. Erickson on April 10, 2011

197266

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Spokane Street Bridge

Bridge Opening – Eastern swing span

Photo taken by K. A. Erickson on April 10, 2011

197267

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Spokane Street Bridge

Bridge Opening – Western swing span

Photo taken by K. A. Erickson on April 10, 2011

197268

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Spokane Street Bridge

Bridge Closing

Photo taken by K. A. Erickson on April 10, 2011

197269

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Spokane Street Bridge

Coming together

Photo taken by K. A. Erickson on April 10, 2011

264456

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Spokane Street Bridge

Seattle

Photo taken by Douglas Butler in April 2013

307037

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Spokane Street Bridge

Looking West on Spokane Street

Photo taken by Royce and Bobette Haley in August 2014

307038

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Spokane Street Bridge

Looking West on Spokane Street

Photo taken by Royce and Bobette Haley in August 2014

307039

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Spokane Street Bridge

Looking East

Photo taken by Royce and Bobette Haley in August 2014

307040

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Spokane Street Bridge

Looking East

Photo taken by Royce and Bobette Haley in August 2014

307041

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Spokane Street Bridge

Looking North

Photo taken by Royce and Bobette Haley in August 2014

307042

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Spokane Street Bridge

Looking North

Photo taken by Royce and Bobette Haley in August 2014

307043

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Spokane Street Bridge

Looking North

Photo taken by Royce and Bobette Haley in August 2014

307044

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Spokane Street Bridge

Looking North

Photo taken by Royce and Bobette Haley in August 2014

307045

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Spokane Street Bridge

Looking NE

Photo taken by Royce and Bobette Haley in August 2014

307046

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Spokane Street Bridge

West approach

Photo taken by Royce and Bobette Haley in August 2014

307047

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Spokane Street Bridge

West approach

Photo taken by Royce and Bobette Haley in August 2014

307048

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Spokane Street Bridge

West approach

Photo taken by Royce and Bobette Haley in August 2014

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Stossel Bridge

Status: Open to traffic

Location: 47.665833,-121.925556

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Carries NE Carnation Farm Road over Snoqualmie River
Design: truss/through/warren
Design Details: Warren steel through truss
Total Length: 330.1 Feet
Span Length: 180.1 Feet

Overview: Through truss bridge over Snoqualmie River on NE Carnation Farm Road
History: Built 1951
Built: 1951

Location: King County

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442103

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Photo taken by the King County Department of Transportation Road Services Division

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Taylor Creek Bridge

Status: Open to traffic

Location: 0.000000,0.000000

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Carries Watershed Road #9 over Taylor Creek
Design: truss/pony
Design Details: Pony truss
Total Length: 51.8 Feet
Span Length: 49.9 Feet

Overview: Pony truss bridge over Taylor Creek on Watershed Road #9
History: Built 1910
Built: 1910

Location: King County

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Tolt River Bridge

Status: Open to traffic

Location: 47.637222,-121.916111

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Carries WA 203 over Tolt River
Design: truss/through/warren
Design Details: Warren through truss
Total Length: 268.1 Feet
Span Length: 160.1 Feet

Overview: Through truss bridge over Tolt River on WA 203 in Carnation
History: Built 1977
Built: 1977

Location: King County

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387045

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Looking South

Photo taken by Mike Garland in August 2016

387044

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Looking South

This is from just inside the north entrance.

Photo taken by Mike Garland in August 2016

387043

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North Approach

Photo taken by Mike Garland in August 2016

387042

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North Portal

Photo taken by Mike Garland in August 2016

242237

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Photo taken by Lightning Jeff

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US 2 Tunnel

Status: Open to traffic

Location: 47.730504,-121.407232

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Carries US 2 over
Design: tunnel
Design Details: Tunnel
Total Length: 184.1 Feet
Span Length: 0.0 Feet

Overview: Tunnel on US 2
History: Built 1937
Built: 1937

Location: King County

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382723

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East Portal

Photo taken by Mike Garland in August 2016

382722

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East Portal

Photo taken by Mike Garland in August 2016

382720

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Date Above East Portal

Photo taken by Mike Garland in August 2016

382721

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East Approach

Photo taken by Mike Garland in August 2016

382718

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East Approach

Photo taken by Mike Garland in August 2016

382719

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East Portal

Photo taken by Mike Garland in August 2016

382717

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East Approach

Photo taken by Mike Garland in August 2016

382715

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West Approach

Photo taken by Mike Garland in August 2016

382716

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West Portal

Photo taken by Mike Garland in August 2016

472876

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US 2 Stevens Pass Tunnel

east portal

Photo from old postcard

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WA 99 Bridge

Status: Open to traffic

Location: 47.666657,-122.347292

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Carries Pedestrian trail over WA 99
Design: frame/concrete
Design Details: Arch
Total Length: 77.1 Feet
Span Length: 77.1 Feet

Overview: Concrete arch bridge over WA 99 on a pedestrian trail in Seattle
History: Built 1933
Built: 1933

Location: King County

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462379

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WA 99 Aurora Avenue Bridge

1935 view

Photo from Seattle Municipal Archives

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Winslow Ferry

Status: Open to traffic

Location: 47.602778,-122.339167

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Carries WA 305 over Puget Sound
Design: ferry
Design Details: Ferry
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Ferry across Puget Sound between Winslow (Bainbridge Island) and downtown Seattle in Seattle
History:
Built:

Location: King County

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Woodbine Way Bridge

Status: Open to traffic

Location: 47.708333,-122.376944

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Carries Woodbine Way over Ravine
Design: arch/deck
Design Details: Arch
Total Length: 21.0 Feet
Span Length: 17.1 Feet

Overview: Concrete arch bridge over Ravine on Woodbine Way in Seattle
History: Built 1928
Built: 1928

Location: King County

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GN - Old Cascade Tunnel

Status: Abandoned

Location: 47.748716,-121.122718

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Carries Great Northern Railway over Under Stevens Pass
Design: tunnel
Design Details: It was 2.6 miles long and had a grade of 1.7% (1 in 58.8ft). After the Wellington Avalanche in 1910 concrete snowsheds were constructed to help with snow control. In 1929 the New Cascade Tunnel at 7.8 miles was completed below the old tunnel and all switchbacks and the old tunnel were abandoned.
Total Length: 14508.0 Feet
Span Length: 0.0 Feet

Overview: Abandoned tunnel under the Cascade Mountains on abandoned Great Northern Railway grade
History: The Original Cascade Tunnel was finished in 1900 and was built to replace a series of 8 switchbacks used to get over the mountains. Deadliest avalanche in US history occurred March 1, 1910 at Wellington (western portal). 96 people killed.
Built: 1900

Location: King County

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136192

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West Portal

Photo by Blue J Wenatchee in July 2006

176831

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West portal in Sept. 10

No longer accessible to walk through

Photo taken by Nathan Morton

176832

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Inside tunnel looking east, partially collapsed

Photo taken by Nathan Morton

387122

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East Portal Old Cascade Tunnel

picture date is between 1926 and 1929

George Fisher collection

387121

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postcard photo of electric locomotive at west portal of Cascade Tunnel

If the photo caption is correct and this is the first electric locomotive then it was taken July 10,1909.

internet domain

419037

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Sking at the tunnel

419038

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Building the tunnel

501426

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Old Cascade Tunnel

West portal of the old Cascade tunnel still under construction.

Unknown photographer

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BNSF - Cascade Tunnel

Status: Open to traffic

Location: 47.715318,-121.145217

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Carries BNSF Railway (originally Great Northern Railway) over Under the Cascade Mountains
Design: tunnel
Design Details: It is the longest railroad tunnel in the United States and was constructed by the Great Northern Railway, being put in service on January 12, 1929. The new tunnel reduced the summit by 501 feet (153 m) (to an altitude of 2,881 feet/878 metres) from the original tunnel, which had suffered problems with fumes, and was itself built to avoid problems caused by heavy winter snowfalls on the original line that had eight switchbacks
Total Length: 41152.0 Feet
Span Length: 0.0 Feet

Overview: Concrete lined tunnel under Cascade Mountains on BNSF Railway (former Great Northern Railway)
History: Longest rail tunnnel in the US, finished in 1929 to bypass old tunnel, switchbacks, and 1.57% grade
Built: 1929

Location: King County

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136195

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West Portal

176829

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West Portal

Photo taken by Nathan Morton in Sept. 10

176830

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East Portal

Photo taken by Nathan Morton

344369

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West Portal

Photo taken by Charles Kuehn, May 2010

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BNSF - Green River Bridge (3rd)

Status: Open to traffic

Location: 47.206033,-121.513377

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Carries BNSF Railway over Green River
Design: truss/through/pratt
Design Details: Pratt through truss
Total Length: 120.0 Feet
Span Length: 120.0 Feet

Overview: Pratt through truss bridge over Green River on BNSF Railway
History: Built 1926
Built: 1926

Location: King County

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GN - Horseshoe tunnel trestle

Status: Removed but not replaced

Location: 47.718869,-121.208372

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Carries Great Northern Railroad over Martin Creek
Design: girder/deck/plate
Design Details: Deck plate girder
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Lost Deck plate girder bridge over Martin Creek on Great Northern Railroad
History: Built 1893 removed 1929 when line relocated to the south
Built: 1893

Location: King County

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418057

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train going over the trestle

418058

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the trestle

418059

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postcard of the trestle and tunnel

418060

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418066

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bridge footing

418562

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http://www.trailvolunteers.org/horseshoe%20extension.html

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BNSF - Sammamish River Bridge

Status: Open to traffic

Location: 47.754496,-122.168479

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Carries BNSF Railway over Sammamish River
Design: girder/deck/plate
Design Details: Deck plate girder
Total Length: 192.0 Feet
Span Length: 60.0 Feet

Overview: Deck plate girder bridge over Sammamish River on BNSF Railway
History: Built 1914
Built: 1914

Location: King County

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SR 520 Floating Bridge

Status: Open to traffic

Location: 47.640673,-122.259132

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Carries SR 520 over Lake Washington
Design: floating/pontoon
Design Details: Pontoon
Total Length: 7710.0 Feet
Span Length: 0.0 Feet

Overview: Floating bridge over Lake Washington on SR 520
History: Opened in 2016
Built: 2016

Location: King County

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307049

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SR 520 Floating Bridge

Eastbound-West end Under construction

Photo taken by Royce and Bobette Haley in August 2014

307050

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SR 520 Floating Bridge

Eastbound-West end Under construction

Photo taken by Royce and Bobette Haley in August 2014

307051

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SR 520 Floating Bridge

Eastbound-West end Under construction

Photo taken by Royce and Bobette Haley in August 2014

307052

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SR 520 Floating Bridge

Eastbound-East end Under construction

Photo taken by Royce and Bobette Haley in August 2014

307053

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SR 520 Floating Bridge

Eastbound-East end Under construction

Photo taken by Royce and Bobette Haley in August 2014

307054

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SR 520 Floating Bridge

Eastbound-East end Under construction

Photo taken by Royce and Bobette Haley in August 2014

307055

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SR 520 Floating Bridge

Eastbound-East end Under construction

Photo taken by Royce and Bobette Haley in August 2014

307056

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SR 520 Floating Bridge

Westbound- East end under construction

Photo taken by Royce and Bobette Haley in August 2014

307057

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SR 520 Floating Bridge

Westbound- East end under construction

Photo taken by Royce and Bobette Haley in August 2014

307058

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SR 520 Floating Bridge

Westbound- East end under construction

Photo taken by Royce and Bobette Haley in August 2014

307059

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SR 520 Floating Bridge

Westbound- West end under construction

Photo taken by Royce and Bobette Haley in August 2014

307060

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SR 520 Floating Bridge

Westbound- West end under construction

Photo taken by Royce and Bobette Haley in August 2014

307061

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SR 520 Floating Bridge

Westbound- West end under construction

Photo taken by Royce and Bobette Haley in August 2014

477690

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New and Old SR 520 bridges, seen from air on commercial flight. This sections on the Seattle side of bridge.

Photo taken by Patrick Gurwell in February 2020

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West Cascade Snowshed

Status: Open to pedestrians

Location: 47.745757,-121.130502

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Carries former Great Northern Railway over
Design: other
Design Details:
Total Length: 2463.0 Feet
Span Length: 0.0 Feet

Overview: Snowshed on former Great Northern Railway
History: Built in 1911 after an avalanche in the same spot killed 90 people just west of the old Cascade Tunnel in 1910. Due to the high cost of building it was the only all concrete snowshed built by the Great Northern
Built: 1911

Location: King County

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176833

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Looking west from east portal

Photo taken by Nathan Morton in Sept. 10

176834

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East Portal

Photo taken by Nathan Morton

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Admiral Way Bridge

Status: Open to traffic

Location: 47.581149,-122.382269

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Carries SW Admiral Way over Ravine, Fairmount Avenue
Design: truss/deck/warren
Design Details: Concrete Warren deck truss.
Total Length: 290.0 Feet
Span Length: 80.1 Feet

Overview: Concrete Warren deck truss bridge over Ravine, Fairmount Avenue on SW Admiral Way
History: Built 1927
Built: 1927

Location: King County

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509753

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Historical Drawing

509754

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Historical Photo

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Dravus Street Bridge

Status: Open to traffic

Location: 47.648481,-122.380703

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Carries W Dravus Street over Railroad Yards
Design: beam/stringer/steel
Design Details: Steel stringer bridge with lattice railings.
Total Length: 416.0 Feet
Span Length: 79.1 Feet

Overview: Steel stringer bridge with lattice railing over Railroad Yards on W Dravus Street
History: Built 1935
Built: 1935

Location: King County

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Ravenna Park Ravine Bridge

Status: Open to pedestrians

Location: 47.671918,-122.306299

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Carries 20th Avenue over Ravenna Park Ravine
Design: arch/deck/steel
Design Details: Steel deck arch bridge.
Total Length: 354.0 Feet
Span Length: 250.0 Feet

Overview: Steel arch bridge over Ravenna Park Ravine on 20th Avenue
History: Built 1912
Built: 1912

Location: King County

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190180

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Elevation.

Creative Commons Attribution-Share Alike 3.0 Unported

Photo taken by Joe Mabel

190181

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Bearing,

Creative Commons Attribution-Share Alike 3.0 Unported

Photo taken by Joe Mabel

190182

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File:Ravenna Park 03.jpg

Creative Commons Attribution-Share Alike 3.0 Unported

Photo taken by Joe Mabel

486557

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Ravenna Park Ravine Bridge

Photo from depts.washington.edu

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Lacey V. Murrow Memorial Bridge

Status: Open to traffic

Location: 47.589167,-122.255556

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Carries EB I-90(formerly US 10/Sunset Highway) over Lake Washington
Design: arch/through/steel
Design Details: Steel through arch and Pontoon
Total Length: 740.2 Feet
Span Length: 227.0 Feet

Overview: Steel through arch Potoon bridge over Lake Washington on EB I-90
History: Built 1940; rehabilitated 1992
Built: 1940

Location: King County

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193626

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General View From Overlook Just Above Tunnel Entrance Looking East

Photo taken by Historic American Engineering Record

193627

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Detail View Of On Right Foreground Fixed Span To Transitional Moveable Span To Floating Span In Middleground

Photo taken by Historic American Engineering Record

193628

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View North Showing Fixed Span, Covered Span, Moveable Transition Span And Pontoon Floating Span

Photo taken by Historic American Engineering Record

193629

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Detail View Fixed Span Including Truss, Moveable Span Which The Next Unit To The Right, And First Unit Of Pontoon Floating Span.

Photo taken by Historic American Engineering Record

193630

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Anchor Cable Jacking System F6d

Photo taken by Historic American Engineering Record

193631

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Modular Expansion Joint On Pontoon A To The Right. Transition Span To The Left

Photo taken by Historic American Engineering Record

193632

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Bolt Beam, Beam Bolts F 18 Cell, Connects Pontoon Units

Photo taken by Historic American Engineering Record

242674

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306869

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Lacey V. Murrow Memorial Bridge

Westbound on Homer M. Hadley Memorial Bridge-Top of eastern arch

Photo taken by Royce and Bobette Haley in August 2014

306870

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Lacey V. Murrow Memorial Bridge

Westbound on Homer M. Hadley Memorial Bridge-Top of eastern arch

Photo taken by Royce and Bobette Haley in August 2014

306871

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Lacey V. Murrow Memorial Bridge

Westbound on Homer M. Hadley Memorial Bridge-Top of eastern arch

Photo taken by Royce and Bobette Haley in August 2014

306872

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Lacey V. Murrow Memorial Bridge

Westbound on Homer M. Hadley Memorial Bridge-West arch in distance

Photo taken by Royce and Bobette Haley in August 2014

306873

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Lacey V. Murrow Memorial Bridge

Westbound on Homer M. Hadley Memorial Bridge-West arch in distance

Photo taken by Royce and Bobette Haley in August 2014

306874

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Lacey V. Murrow Memorial Bridge

Westbound on Homer M. Hadley Memorial Bridge-West arch

Photo taken by Royce and Bobette Haley in August 2014

306875

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Lacey V. Murrow Memorial Bridge

Westbound on Homer M. Hadley Memorial Bridge-West arch top

Photo taken by Royce and Bobette Haley in August 2014

306876

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Lacey V. Murrow Memorial Bridge

Westbound on Homer M. Hadley Memorial Bridge-West arch top

Photo taken by Royce and Bobette Haley in August 2014

306877

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Lacey V. Murrow Memorial Bridge

Westbound on Homer M. Hadley Memorial Bridge-Pontoon section on left side

Photo taken by Royce and Bobette Haley in August 2014

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Evergreen Point Floating Bridge

Status: Replaced by a new bridge

Location: 47.642500,-122.273333

View Google Map

Carries SR 520 over Lake Washington
Design: floating/pontoon
Design Details: Draw bridge unknown type with Warren through trusses with all verticals and pontoons for the east and west approaches
Total Length: 7518.4 Feet
Span Length: 0.0 Feet

Overview: Pontoon bridge over Lake Washington on SR 520
History: Built 1963, replaced by new six-lane floating bridge in 2016
Built: 1963

Location: King County

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306299

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Evergreen Point Floating Bridge

Headed east-West truss in background

Photo taken by Royce and Bobette Haley in August 2014

306300

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Evergreen Point Floating Bridge

Headed east-West truss in background

Photo taken by Royce and Bobette Haley in August 2014

306301

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Evergreen Point Floating Bridge

Looking East at west portal of west truss

Photo taken by Royce and Bobette Haley in August 2014

306302

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Evergreen Point Floating Bridge

Looking East at west portal of west truss

Photo taken by Royce and Bobette Haley in August 2014

306303

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Evergreen Point Floating Bridge

Looking East through west truss

Photo taken by Royce and Bobette Haley in August 2014

306304

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Evergreen Point Floating Bridge

Looking East at draw span

Photo taken by Royce and Bobette Haley in August 2014

306305

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Evergreen Point Floating Bridge

Looking East at draw span

Photo taken by Royce and Bobette Haley in August 2014

306306

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Evergreen Point Floating Bridge

Looking East at east truss in distance

Photo taken by Royce and Bobette Haley in August 2014

306307

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Evergreen Point Floating Bridge

Looking East at east truss in distance

Photo taken by Royce and Bobette Haley in August 2014

306308

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Evergreen Point Floating Bridge

Looking East at west portal of east truss

Photo taken by Royce and Bobette Haley in August 2014

306309

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Evergreen Point Floating Bridge

Looking East at west portal of east truss

Photo taken by Royce and Bobette Haley in August 2014

306310

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Evergreen Point Floating Bridge

Looking East at east portal of east truss

Photo taken by Royce and Bobette Haley in August 2014

306311

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Evergreen Point Floating Bridge

Looking West at east portal of east truss

Photo taken by Royce and Bobette Haley in August 2014

306312

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Evergreen Point Floating Bridge

Looking West at east portal of east truss

Photo taken by Royce and Bobette Haley in August 2014

306313

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Evergreen Point Floating Bridge

Looking West at west portal of east truss

Photo taken by Royce and Bobette Haley in August 2014

306314

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Evergreen Point Floating Bridge

Looking West at draw span

Photo taken by Royce and Bobette Haley in August 2014

306315

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Evergreen Point Floating Bridge

Looking West at east portal of west span in distance

Photo taken by Royce and Bobette Haley in August 2014

306316

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Evergreen Point Floating Bridge

Looking West at east portal of west span in distance

Photo taken by Royce and Bobette Haley in August 2014

306317

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Evergreen Point Floating Bridge

Looking West at east portal of west span

Photo taken by Royce and Bobette Haley in August 2014

306318

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Evergreen Point Floating Bridge

Looking West at east portal of west span

Photo taken by Royce and Bobette Haley in August 2014

306319

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Evergreen Point Floating Bridge

Looking West at west portal of west truss

Photo taken by Royce and Bobette Haley in August 2014

306320

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Evergreen Point Floating Bridge

Eastbound on draw span

Photo taken by Royce and Bobette Haley in August 2014

306321

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Evergreen Point Floating Bridge

Westbound on draw span

Photo taken by Royce and Bobette Haley in August 2014

306322

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Evergreen Point Floating Bridge

Westbound on draw span

Photo taken by Royce and Bobette Haley in August 2014

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Homer M. Hadley Memorial Bridge

Status: Open to traffic

Location: 47.590278,-122.282500

View Google Map

Carries W.B. & Rev I-90 over Lake Washington
Design: floating/pontoon
Design Details: Pontoon
Total Length: 5737.2 Feet
Span Length: 354.0 Feet

Overview: Pontoon bridge over Lake Washington on W.B. & Rev I-90
History: Built 1989
Built: 1989

Location: King County

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306878

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Homer M. Hadley Memorial Bridge

Westbound on Homer M. Hadley Bridge-Mount Baker Tunnels (background) and Lacey V. Murrow Bridge(left) visible.

Photo taken by Royce and Bobette Haley in August 2014

306879

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Homer M. Hadley Memorial Bridge

Westbound on Homer M. Hadley Bridge-Mount Baker Tunnels (background) and Lacey V. Murrow Bridge(left) visible.

Photo taken by Royce and Bobette Haley in August 2014

477689

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Taken from commercial flight coming into Seatac

Photo taken by Patrick Gurwell in February 2020

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Weyerhaeuser Road Bridge

Status: Removed but not replaced

Location: 47.183889,-121.925022

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Carries Weyerhaeuser Road over State Route 410
Design: beam/stringer/wood
Design Details: Timber stringer
Total Length: 119.1 Feet
Span Length: 47.9 Feet

Overview: Timber stringer bridge over State Route 410 on Weyerhaeuser Road
History: Built 1960, removed 2021
Built: 1960

Location: King County

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194054

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Weyerhaeuser Road Bridge

View from Northwest

Photo taken by K. A. Erickson in February 2011

194055

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Weyerhaeuser Road Bridge

View from Southwest

Photo taken by K. A. Erickson in February 2011

194056

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Weyerhaeuser Road Bridge

Expanded "wings"

Photo taken by K. A. Erickson in February 2011

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Marymoor Way Bridge

Status: Open to traffic

Location: 47.662320,-122.124477

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Carries Marymoor Way over Sammamish River
Design: beam/tee
Design Details: Tee beam
Total Length: 57.1 Feet
Span Length: 57.1 Feet

Overview: Tee beam over Sammamish River on Marymoor Way
History: Built 1963
Built: 1963

Location: King County

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Raging River Bridge

Status: Replaced by new bridge

Location: 47.565000,-121.890000

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Carries Preston-Fall City Road over Raging River
Design: girder/pony/plate
Design Details: Pony plate girder
Total Length: 202.1 Feet
Span Length: 97.1 Feet

Overview: Lost Pony plate girder bridge over Raging River on Preston-Fall City Road
History: Built 1937, replaced 1998
Built: 1937

Location: King County

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196063

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Raging River Bridge

Photo taken by Historic American Engineering Record

196064

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Raging River Bridge

Photo taken by Historic American Engineering Record

196065

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Raging River Bridge

Photo taken by Historic American Engineering Record

196066

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Raging River Bridge

Photo taken by Historic American Engineering Record

196067

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Raging River Bridge

Photo taken by Historic American Engineering Record

196068

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Raging River Bridge

Photo taken by Historic American Engineering Record

196069

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Raging River Bridge

Photo taken by Historic American Engineering Record

196070

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Photo taken by Historic American Engineering Record

196071

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Raging River Bridge

Photo taken by Historic American Engineering Record

196072

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Raging River Bridge

Photo taken by Historic American Engineering Record

196073

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Raging River Bridge

Photo taken by Historic American Engineering Record

196074

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Raging River Bridge

Photo taken by Historic American Engineering Record

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Aurora Footbridge

Status: Open to pedestrians

Location: 47.656667,-122.347222

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Carries Pedestrians over Aurora Ave N
Design: girder
Design Details: Girder
Total Length: 175.9 Feet
Span Length: 82.0 Feet

Overview: Girder bridge over Aurora Ave N on Pedestrians
History: Built 1935
Built: 1935

Location: King County

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197257

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41st Street Pedestrian Viaduct

View from South

Photo taken by K. A. Erickson in April 2011

197258

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41st Street Pedestrian Viaduct

Below Deck View

Photo taken by K. A. Erickson in April 2011

197259

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41st Street Pedestrian Viaduct

Oblique view

Photo taken by K. A. Erickson in April 2011

197260

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41st Street Pedestrian Viaduct

View from North

Photo taken by K. A. Erickson in April 2011

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BNSF - Duwamish River Bridge (1930)

Status: Open to traffic

Location: 47.570052,-122.352141

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Carries BNSF Railroad over Duwamish River
Design: truss/through/warren
Design Details: Warren through truss bascule
Total Length: 160.0 Feet
Span Length: 0.0 Feet

Overview: Single leaf bascule bridge over Duwamish River on BNSF Railroad (single track)
History: Built 1928
Built: 1928

Location: King County

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197261

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Duwamish River Railroad Bridge

View from North

Photo taken by K. A. Erickson in April 2011

260328

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BNSF -Duwamish River Bridge

Raised

Drawing made by Douglas Butler

260468

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BNSF - Duwamish River Bridge

Closed

Drawing made by Douglas Butler

260469

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BNSF - Duwamish River Bridge

Still in heavy use

Drawing made by Douglas Butler

260470

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BNSF - Duwamish River Bridge

Showing opposite view

Drawing made by Douglas Butler

260471

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NP/BNSF - Duwamish River Bridge

Before this bridge was constructed with the machinery built into the bascule span and the struts pinned fixed to the counterweight bridge tower in 1911.

Drawing made by Douglas Butler

260472

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NP/BNSF- Duwamish River Bridge

Bridge raising while the pinion engages the rack on the operating struts carries with the machinery along the bascule span.

Drawing made by Douglas Butler

260473

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NP/BNSF - Duwamish River Bridge

Bridge raised with the struts up through the span later in 1928 the energy was reversed and transferred from the bascule span to the counterweight for a better suited operation.

Drawing made by Douglas Butler

264202

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BNSF - Duwamish River Bridge

Raised

Photo taken by Douglas Butler

264203

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BNSF - Duwamish River Bridge

Raising

Photo taken by Douglas Butler

264204

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BNSF - Duwamish River Bridge

Showing detail

Photo taken by Douglas Butler in April 2013

264205

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Northern Pacific railroad bridge Delail

Close detail

Photo taken by Douglas Butler in August 2013

264206

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BNSF - Duwamish River Bridge

About to lower for train traffic

Photo taken by Douglas Butler in March 2013

264207

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BNSF - Duwamish River Bridge

Closed

Photo taken by Douglas Butler in March 2013

289681

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BNSF - Duwamish River Bridge

Bridge in operation

Photo taken by Douglas Butler in January 2014

293200

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BNSF - Duwamish River Bridge

Closed

Photo taken by Douglas Butler in September 2014

293201

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BNSF - Duwamish River Bridge

Raising

Photo taken by Douglas Butler in September 2014

293202

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BNSF - Duwamish River Bridge

Raised

Photo taken by Douglas Butler in September 2014

305343

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BNSF - Duwamish River bridge

Raised for ships

Photo taken by Douglas Butler in October 2014

305992

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BNSF - Duwamish River Bridge

Looking SW from Spokane Street Bridge, under the West Seattle Bridge

Photo taken by Royce and Bobette Haley in August 2014

305993

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BNSF - Duwamish River Bridge

Looking SW from Spokane Street Bridge, under the West Seattle Bridge

Photo taken by Royce and Bobette Haley in August 2014

305994

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BNSF - Duwamish River Bridge

Looking SE

Photo taken by Royce and Bobette Haley in August 2014

305995

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BNSF - Duwamish River Bridge

Looking SE

Photo taken by Royce and Bobette Haley in August 2014

305996

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BNSF - Duwamish River Bridge

Looking SE

Photo taken by Royce and Bobette Haley in August 2014

305997

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BNSF - Duwamish River Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

305998

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BNSF - Duwamish River Bridge

Looking SE

Photo taken by Royce and Bobette Haley in August 2014

305999

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BNSF - Duwamish River Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

306000

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BNSF - Duwamish River Bridge

Looking SE

Photo taken by Royce and Bobette Haley in August 2014

306001

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BNSF - Duwamish River Bridge

Looking SE

Photo taken by Royce and Bobette Haley in August 2014

306002

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BNSF - Duwamish River Bridge

Detail

Photo taken by Royce and Bobette Haley in August 2014

306003

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Looking SE

Photo taken by Royce and Bobette Haley in August 2014

306004

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BNSF - Duwamish River Bridge

Photo taken by Royce and Bobette Haley in August 2014

306274

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BNSF - Duwamish River Bridge

Raised until trains for lowering

Photo taken by Douglas Butler in October 2014

306275

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BNSF - Duwamish River Bridge

Up close detail

Photo taken by Douglas Butler in October 2014

306276

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BNSF - Duwamish River Bridge

Repaired in late 1928

Photo taken by Douglas Butler in October 2014

306277

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BNSF - Duwamish River Bridge

Still in heavy use

Photo taken by Douglas Butler in October 2014

324647

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BNSF - Duwamish River Bridge

Lowering for train traffic.

Photo taken by Douglas Butler in May 2015

347405

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Strauss bascule bridge design plan

Photo taken by Douglas Butler in January 2016

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Alaskan Way Viaduct

Status: Demolished 2019

Location: 47.601273,-122.335930

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Carries WA 99 over City Streets & Railroad
Design: beam/stringer/concrete
Design Details: Concrete stringer
Total Length: 10704.6 Feet
Span Length: 63.0 Feet

Overview: Double-deck stringer bridge running parallel to Alaskan Way along Seattle waterfront
History: Built 1953; rehabilitated 1957; replaced 2010-2019
Built: 1953

Location: King County

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197283

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Aerial View Of Alaskan Way Viaduct, Which Starts At Left Of Rail Yards, Becomes Double-Deck Viaduct Close To Coast Guard Yard Just Above Rail Yards, And Proceeds Along Shoreline Up Into Middle Of Picture.

Photo taken by Historic American Engineering Record

197284

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Aerial View Looking North Showing Alignment Of Rail Yards With Viaduct, Which Crosses Over Tracks Leading Out Of The Yard In The Middle Of The Picture.

Photo taken by Historic American Engineering Record

197285

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Alaskan Way South, Looking North Northeast. Southeast And West Faces Of Viaduct Visible.

Photo taken by Historic American Engineering Record

197286

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Axial View Of Viaduct Showing Double-Deck Construction.

Photo taken by Historic American Engineering Record

197287

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Marine Terminals Left, Qwest And Safeco Stadiums Right, Rail Yards Lower Right Of Picture Space.

Photo taken by Historic American Engineering Record

197288

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Aerial View Showing Beginning Of Viaduct Where It Splits Into Two Levels.

Photo taken by Historic American Engineering Record

197289

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Marine Terminals Foreground, Skyline And Viaduct Looking North Northwest.

Photo taken by Historic American Engineering Record

197290

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South Section Of Viaduct As It Passes Along Qwest Field.

Photo taken by Historic American Engineering Record

197291

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Viaduct And Ferry Terminal For Seattle-Victoria, Seattle Winslow, Seattle Bremerton, And Seattle-Vashon Ferries.

Photo taken by Historic American Engineering Record

197292

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Northern End Of Viaduct Where It Enters Battery Street Tunnel. Lake Union Visible In Background. Tunnel Proceeds In Cut And Cover Fashion Directly Beneath Battery Street.

Photo taken by Historic American Engineering Record

197293

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Midsection View As Viaduct Passes Ferry Terminals And Pike Place Markets.

Photo taken by Historic American Engineering Record

197294

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Viaduct, Waterfront Park Center Left; Pike Place Market Opposite Side Of Viaduct.

Photo taken by Historic American Engineering Record

197295

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North Portal Of Viaduct Where It Merges With Aurora Avenue; Denny Park At Top Middle Of Picture. Top Of Portal Intersects With Seventh Avenue On The Diagonal.

Photo taken by Historic American Engineering Record

197296

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Viaduct Looking Southeast Where It Crosses Elliott Avenue At Bottom Of Picture And Passes Along Waterfront Park And Pike Place.

Photo taken by Historic American Engineering Record

197297

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North Portal Of Battery Street Tunnel, Looking South.

Photo taken by Historic American Engineering Record

197298

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North Portal Of Battery Street Tunnel Showing Its Merger With Aurora Avenue.

Photo taken by Historic American Engineering Record

197299

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Base Of Space Needle And Frank Gehry's Experience Music Project.

Photo taken by Historic American Engineering Record

197300

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Viaduct Looking East South East. Qwest And Safeco Stadiums In Distance.

Photo taken by Historic American Engineering Record

197301

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Viaduct At North End As It Turns Into Battery Street Tunnel To Left Center Of Picture.

Photo taken by Historic American Engineering Record

197302

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Wall Street And Alaskan Way Intersect At Bottom Of Picture. Looking South East. Note Railroad Right Of Way Paralleling Highway At Bottom Of Picture Allowing Ingress And Egress From Yards At Other End Of Viaduct.

Photo taken by Historic American Engineering Record

197303

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Alaskan Way Viaduct From North Where It Comes Out Of Battery Street Tunnel To Its Southern End Just Past Stadiums In The Distance.

Photo taken by Historic American Engineering Record

197304

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North End Of Viaduct At Its Entrance Just Under First Avenue Showing Complete Double-Deck Construction.

Photo taken by Historic American Engineering Record

197305

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View Looking Down First Avenue With Seattle Skyline, Viaduct, Marine Terminals, And Stadiums.

Photo taken by Historic American Engineering Record

197306

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Section Of Viaduct Near Pike Place Where North And Southbound Lanes Separate.

Photo taken by Historic American Engineering Record

197307

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Pike Place Market, Center Of Picture; Alaskan Way At Bottom Of Picture. Section Of Viaduct As It Separates From Left To Right.

Photo taken by Historic American Engineering Record

197308

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Main Car Ferry Terminals At Alaskan Way And Marion Street. Note Pioneer Square Park Adjacent To One Of Seattle's Early Skyscrapers.

Photo taken by Historic American Engineering Record

197309

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Skyline, Viaduct, Markets, And Lake Union Off To Left.

Photo taken by Historic American Engineering Record

197310

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Viaduct Looking Northeast.

Photo taken by Historic American Engineering Record

197311

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Viaduct Midsection With Marine Terminal, View Northeast.

Photo taken by Historic American Engineering Record

197312

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Looking North Near Bemis Company, Container Yards To Left.

Photo taken by Historic American Engineering Record

197313

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View From Southwest, Note Exit Section That Was Never Finished At Bottom Third Of Viaduct.

Photo taken by Historic American Engineering Record

197314

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Viaduct To Right, Looking South From Victor Steinbrueck Park. Pike Place Market Center.

Photo taken by Historic American Engineering Record

197315

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View Looking Northwest From Steinbrueck Park Showing Viaduct North And Southbound Split. Note Finial Atop Street Light.

Photo taken by Historic American Engineering Record

197316

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Viaduct Looking Southwest From Atop Bemis Building.

Photo taken by Historic American Engineering Record

197317

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View North From Bemis Roof With Viaduct And Skyline.

Photo taken by Historic American Engineering Record

197318

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Viaduct Looking South From Polson Building Roof.

Photo taken by Historic American Engineering Record

197319

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Viaduct Looking North From Polson Building.

Photo taken by Historic American Engineering Record

197320

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Photograph Numbers 40, 39, 38 Form A 189 Degree Panorama From Left To Right. Photograph Number 38 Looking Northeast To Skyline From Roof Of Polson Building; Photograph Number 39 View North; Photograph Number 40 View Northwest.

Photo taken by Historic American Engineering Record

197321

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See Caption For Photograph Number

Photo taken by Historic American Engineering Record

197322

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See Caption For Photograph Number

Photo taken by Historic American Engineering Record

197323

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Intersection Of Royal Brougham And Alaskan Way. View Looking Northwest At West Side Of Viaduct.

Photo taken by Historic American Engineering Record

197324

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Intersection Of Royal Brougham And Alaskan Way. View Looking Northwest At West Side Of Viaduct. One Telephone Pole At Center Of View.

Photo taken by Historic American Engineering Record

197325

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Intersection Of Royal Brougham And Alaskan Way. View Looking At West Side Of Structure. Note Flying Buttresses.

Photo taken by Historic American Engineering Record

197326

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Looking South At Southbound Ramp And Flying Buttresses Where Viaduct Returns To Street Level.

Photo taken by Historic American Engineering Record

197327

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View Looking North At Southbound Lanes As Viaduct Returns To Street Level. View Of West Side Of Structure (Holgate Vicinity).

Photo taken by Historic American Engineering Record

197328

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Photograph Numbers 46, 47, 48, 49, And 50 Form From Right To Left A Single Panorama. View Looking North At East Side Of Structures (Holgate Vicinity).

Photo taken by Historic American Engineering Record

197329

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Photograph Numbers 46, 48, 49, And 50 Form A Single Panorama. Double Ramp Structure; East Side Illustrating Grade Change To Lower Roadway.

Photo taken by Historic American Engineering Record

197330

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Part Of Panorama With Photograph Numbers 46, 47, 49, And 50 Form A Single Panorama.

Photo taken by Historic American Engineering Record

197331

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Part Of Panorama With Photograph Numbers 46, 47, 48, And

Photo taken by Historic American Engineering Record

197332

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Part Of Panorama With Photograph Numbers 46, 47, 48, And

Photo taken by Historic American Engineering Record

197333

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Sign Structure At Battery Street, Tunnel North Entrance (Thomas Street Vicinity).

Photo taken by Historic American Engineering Record

197334

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Looking Southeast Of Battery Street Tunnel Entrance.

Photo taken by Historic American Engineering Record

197335

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View Of Tunnel Approach, Looking Southwest At Viaduct Roadway (Battery And First Avenue Vicinity).

Photo taken by Historic American Engineering Record

197336

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Battery Street Looking East From First Avenue Vicinity. Note Grates In Middle Of Street Providing Ventilation For The Tunnel.

Photo taken by Historic American Engineering Record

197337

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View Of Escape Hatch/Vault On Battery Street At Corner Of Fourth Avenue. View Looking Northwest.

Photo taken by Historic American Engineering Record

197338

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Railing And Post Detail View Looking East At West Side Of First Avenue On-Ramp (Qwest Seahawk Stadium In Background).

Photo taken by Historic American Engineering Record

197339

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Below Deck Detail Where Exit Ramp Connecting With First Avenue Was Not Fully Executed.

Photo taken by Historic American Engineering Record

197340

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View Of On/Off Ramp At First Avenue. Looking North With On-Ramp On Right And Off-Ramp At Left.

Photo taken by Historic American Engineering Record

197341

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Railing Detail At First Avenue On-Ramp, View Looking West At Solid Concrete Railing.

Photo taken by Historic American Engineering Record

197342

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Substructure View Of First Avenue On-Ramp With Triangle Building In Background. Looking Northwest.

Photo taken by Historic American Engineering Record

197343

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Detail View Of First Avenue On-Ramp, Looking Southeast.

Photo taken by Historic American Engineering Record

197344

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Detail View Of Concrete Columns At First Avenue On-Ramp, Looking North On First Avenue.

Photo taken by Historic American Engineering Record

197345

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Column Detail With Substructure/Steel Beam/Concrete Beam At First Avenue On-Ramp. Triangle Building At Right Side Of Photograph.

Photo taken by Historic American Engineering Record

197346

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Substructure And Ramp Detail View Of First Avenue On- And Off-Ramps, Looking Southeast At First Avenue (Dearborn And Railroad Avenues South Intersection). Note Steel And Concrete Girders And Concrete Columns.

Photo taken by Historic American Engineering Record

197347

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Detail View Of Merge Of Double-Deck And First Avenue Ramps, Looking North.

Photo taken by Historic American Engineering Record

197348

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Substructure View Of Junction Between State And City Designed Longitudinal Beams, Looking North.

Photo taken by Historic American Engineering Record

197349

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Substructure View Of First Avenue Ramps, View Looking Southeast From Merging Viaducts.

Photo taken by Historic American Engineering Record

197350

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Column Detail View Looking Northeast At Intersection Of South King Street And Viaduct.

Photo taken by Historic American Engineering Record

197351

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General View Of Seneca Street Off-Ramp, View Looking East At South Side Of Structure.

Photo taken by Historic American Engineering Record

197352

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Approach View At South End Of Viaduct Looking North From Southbound Lanes.

Photo taken by Historic American Engineering Record

197353

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View North Northwest From Abandoned Approaches Toward Royal Brougham. Includes Original Guardrails.

Photo taken by Historic American Engineering Record

197354

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View South Southwest Of Original Wood Guardrails, North Deck And Waterfront.

Photo taken by Historic American Engineering Record

197355

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East Side Of Upper And Lower Decks At Royal Brougham, View Northwest.

Photo taken by Historic American Engineering Record

197356

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Detail Of Light Standard And Concrete Guardrails, View To Northwest.

Photo taken by Historic American Engineering Record

197357

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Detail Of Fire Control Valve On Upper Deck At Dearborn Street Bent125w). View Southwest.

Photo taken by Historic American Engineering Record

197358

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Area Where North And South Decks Separate At Approximately Stewart Street (Bent 48). View To North. Viaduct Closed For Easter Weekend 2008 For Annual Inspection.

Photo taken by Historic American Engineering Record

197359

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Central Waterfront Sign Bridge, View To North (Bent 37).

Photo taken by Historic American Engineering Record

197360

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View Of Steel Spans And Bents Over Railroad Tracks. From North Deck. View To Northwest (Bent 42w).

Photo taken by Historic American Engineering Record

197361

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View Of Southbound Lanes Where The Lower Deck Diverts From The Double-Deck Configuration. Looking North With Flying Buttresses In Foreground.

Photo taken by Historic American Engineering Record

197362

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View Of Inspectors At Bent 105, Southbound Lanes Lower Deck, Looking North.

Photo taken by Historic American Engineering Record

197363

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View Of Lower Deck Roadway And West Side Of Viaduct, Looking Northwest From Bent

Photo taken by Historic American Engineering Record

197364

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Seismic Stabilization Detail At Bent 98, Looking Northeast.

Photo taken by Historic American Engineering Record

197365

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Photo taken by Historic American Engineering Record

197366

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View Of Southbound Lanes Where The Lower Deck Diverts From The Double-Deck Configuration. Looking North Where Lower Deck Returns To Grade.

Photo taken by Historic American Engineering Record

197367

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General View Of Viaduct Looking South From Northbound Lanes. Equestrian Building And Pike Place Market At Left Side Of Photograph.

Photo taken by Historic American Engineering Record

197368

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Railing Detail Looking Northeast At On Ramp, Adjacent To Southbound Lanes As It Merges With Viaduct.

Photo taken by Historic American Engineering Record

197369

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Detail View Of Notch In Viaduct Around The Building. Looking Northwest.

Photo taken by Historic American Engineering Record

197370

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View Of Northbound Lanes And Sign Structure, Looking South From Southbound Lanes. Qwest Field, Safeco Stadium And Mount Rainier In Background.

Photo taken by Historic American Engineering Record

197371

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First And Washington Looking West At Viaduct In Pioneer Square District.

Photo taken by Historic American Engineering Record

197372

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Yessler And First, Looking West.

Photo taken by Historic American Engineering Record

424173

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Alaska Way Viaduct

Photo taken by Richard Doody in March 2013

424174

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Alaska Way Viaduct

Photo taken by Richard Doody in March 2013

424175

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Alaska Way Viaduct

Photo taken by Richard Doody in 2002

424176

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Alaska Way Viaduct

Photo taken by Richard Doody in 1982

424177

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Alaska Way Viaduct

Photo taken by Richard Doody in 1977

477680

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Destruction of Viaduct underway.

Photo taken by Patrick Gurwell in July 2019

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Issaquah Creek Bridge

Status: Open to traffic

Location: 47.541944,-122.044167

View Google Map

Carries NW Gilman Blvd. over Issaquah Creek
Design: beam/stringer
Design Details: Stringer
Total Length: 106.0 Feet
Span Length: 65.0 Feet

Overview: Stringer bridge over Issaquah Creek on NW Gilman Blvd.
History: Built 1940
Built: 1940

Location: King County

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197740

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Issaquah Creek Bridge

View from North

Photo taken by K. A. Erickson in April 2011

197741

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Issaquah Creek Bridge

Oblique view

Photo taken by K. A. Erickson in April 2011

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Airport Way Bridge

Status: Open to traffic

Location: 47.555833,-122.322222

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Carries Airport Way S over Argo Railroad Yard
Design: girder/deck/plate
Design Details: Deck plate girder
Total Length: 1497.1 Feet
Span Length: 107.0 Feet

Overview: Deck plate girder bridge over Argo Railroad Yard on Airport Way S
History: Built 1928; rehabilitated 1981
Built: 1928

Location: King County

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200160

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Airport Way Bridge

View from Southeast

Photo taken by K. A. Erickson in June 2011

200161

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Airport Way Bridge

Section of span – Southern approach

Photo taken by K. A. Erickson in June 2011

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Weyerhaeuser Road Bridge

Status: Open to traffic

Location: 47.154444,-121.921944

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Carries SE Mud Mountain Road over Weyerhaeuser Mainline Road
Design: beam/stringer
Design Details: Stringer
Total Length: 183.1 Feet
Span Length: 61.0 Feet

Overview: Stringer bridge over Weyerhaeuser Mainline Road on SE Mud Mountain Road
History: Built 1960; rehabilitated 1995
Built: 1960

Location: King County

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202146

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Weyerhaeuser Road Bridge

View from East

Photo taken by K. A. Erickson on June 21, 2011

202147

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Weyerhaeuser Road Bridge

View from South

Photo taken by K. A. Erickson on June 21, 2011

202148

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Weyerhaeuser Road Bridge

Below deck view looking East

Photo taken by K. A. Erickson on June 21, 2011

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Weyerhaeuser Road Bridge

Status: Demolished

Location: 47.161516,-121.874976

View Google Map

Carries Former Weyerhaeuser Mainline Road over Scatter Creek
Design: beam/tee
Design Details:
Total Length: 159.0 Feet
Span Length: 0.0 Feet

Overview: Abandoned Concrete tee beam bridge over Scatter Creek on Former Weyerhaeuser Mainline Road
History:
Built:

Location: King County

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202151

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Weyerhaeuser Road Bridge

View from Northeast

Photo taken by K. A. Erickson on June 21, 2011

202152

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Weyerhaeuser Road Bridge

Deck & road view looking West

Photo taken by K. A. Erickson on June 21, 2011

202153

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Weyerhaeuser Road Bridge

Below deck view looking West

Photo taken by K. A. Erickson on June 21, 2011

202154

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Weyerhaeuser Road Bridge

Eastern section of bridge viewed from North

Photo taken by K. A. Erickson on June 21, 2011

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Bridge Camp Bridge

Status: Open to traffic

Location: 47.172344,-121.797195

View Google Map

Carries Pedestrian Walkway over White River
Design: truss/pony/pratt
Design Details: Pin connected Pratt pony truss bridge
Total Length: 217.0 Feet
Span Length: 152.0 Feet

Overview: Pratt pony truss bridge over White River on Pedestrian Walkway
History: Built 1902
Built: 1902

Location: King County

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202423

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1

Photo From WISAARD

202424

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2

Photo From WISAARD

202425

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3

Photo From WISAARD

202426

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4

Photo From WISAARD

202427

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5

Photo From WISAARD

202428

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6

Photo From WISAARD

202429

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7

Photo From WISAARD

202430

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8

Photo From WISAARD

202431

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Photo From WISAARD

202441

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White River Bridge

Photo taken by K. A. Erickson in June 2011

202442

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White River Bridge

Photo taken by K. A. Erickson in June 2011

202443

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White River Bridge

Photo taken by K. A. Erickson in June 2011

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BNSF - Foss River Bridge

Status: Open to traffic

Location: 47.687490,-121.298548

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Carries BNSF Railway over Foss River, USFS Rd 68 (Foss River Rd)
Design: truss/deck/warren
Design Details: 12 Deck plate girders, 6 on each side 1 Warren deck truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Deck plate girder, deck truss bridge over Foss River, USFS Rd 68 (Foss River Rd) on BNSF Railway
History: Built 1909
Built: 1909

Location: King County

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208550

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Foss River Railroad Bridge

Looking West

Photo taken by K. A. Erickson on August 13, 2011

208551

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Foss River Railroad Bridge

Stamped steel

Photo taken by K. A. Erickson on August 13, 2011

208552

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Foss River Railroad Bridge

Looking East

Photo taken by K. A. Erickson on August 13, 2011

208553

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Foss River Railroad Bridge

Support piers

Photo taken by K. A. Erickson on August 13, 2011

231023

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Photo taken by Neil Martel in April 2012

231024

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Photo taken by Neil Martel in April 2012

231025

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Photo taken by Neil Martel in April 2012

231026

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Stone western abutment

Photo taken by Neil Martel in April 2012

231027

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Photo taken by Neil Martel in April 2012

231028

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Photo taken by Neil Martel in April 2012

231029

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Photo taken by Neil Martel in April 2012

231030

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Photo taken by Neil Martel in April 2012

231031

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Photo taken by Neil Martel in April 2012

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Patton Bridge

Status: Open to traffic

Location: 47.286667,-122.156667

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Carries SE Green Valley Road over Green River
Design: beam
Design Details: Beam
Total Length: 430.1 Feet
Span Length: 200.1 Feet

Overview: Beam bridge over Green River on SE Green Valley Road
History: Built 1950
Built: 1950

Location: King County

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BNSF - Miller River Bridge

Status: Open to traffic

Location: 47.718292,-121.393852

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Carries BNSF Railway over Miller River
Design: truss/through/pratt
Design Details: Pratt through truss with deck plate girder approach spans
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Pratt through truss bridge over Miller River on BNSF Railway
History: Built 1916
Built: 1916

Location: King County

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229173

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Photo taken by Neil Martel in September 2010

229174

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Photo taken by Neil Martel in September 2010

229175

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Photo taken by Neil Martel in September 2010

229176

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Photo taken by Neil Martel in September 2010

229177

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Photo taken by Neil Martel in September 2010

229178

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Photo taken by Neil Martel in September 2010

229179

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Photo taken by Neil Martel in September 2010

229180

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Photo taken by Neil Martel in September 2010

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BNSF - South Fork Skykomish River Bridge

Status: Open to traffic

Location: 47.729320,-121.411962

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Carries BNSF Railway over South Fork Skykomish River
Design: truss/through/warren
Design Details: 2 span skewed Warren through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Skewed Warren through truss bridge over South Fork Skykomish River on BNSF Railway
History: Built 1916
Built: 1916

Location: King County

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229431

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Photo taken by Neil Martel in April 2012

229432

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Western span

Photo taken by Neil Martel in April 2012

229433

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Shim blocks under shoes on eastern abutment

Photo taken by Neil Martel in April 2012

229434

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Eastern span

Photo taken by Neil Martel in April 2012

229435

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Photo taken by Neil Martel in April 2012

229436

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Photo taken by Neil Martel in April 2012

229437

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Photo taken by Neil Martel in April 2012

229438

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Better view of eastern span shim blocks on center pier

Photo taken by Neil Martel in April 2012

229439

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Photo taken by Neil Martel in April 2012

229440

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View facing west

Photo taken by Neil Martel in April 2012

229442

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Eastern span looks newer than western span note the shim blocks

Photo taken by Neil Martel in April 2012

229443

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Stone western abutment

Photo taken by Neil Martel in April 2012

229445

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Photo taken by Neil Martel in April 2012

229446

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Photo taken by Neil Martel in April 2012

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South Fork Skykomish River Bridge

Status: Open to traffic

Location: 47.730278,-121.408611

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Carries Old Cascade Highway over Skykomish River
Design: beam/stringer/steel
Design Details: Steel stringer
Total Length: 254.9 Feet
Span Length: 161.1 Feet

Overview: Steel stringer bridge over Skykomish River on Old Cascade Highway
History: Built 1957
Built: 1957

Location: King County

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229480

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Photo taken by Neil Martel in April 2012

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Mount Si Road Bridge

Status: Open to traffic

Location: 47.486667,-121.760000

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Carries Mount Si Road over Middle Fork Snoqualmie River
Design: truss/through/parker
Design Details: Parker through truss 2009: American Institute of Steel Construction Merit Award - Medium Span
Total Length: 365.2 Feet
Span Length: 240.2 Feet

Overview: Parker through truss bridge over Middle Fork Snoqualmie River on Mount Si Road
History: Built 2008
Built: 2008

Location: King County

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Snoqualmie Valley Trail - Reinig Bridge

Status: Open to pedestrians

Location: 47.529529,-121.806612

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Carries Pedestrian walkway over Snoqualmie River
Design: truss/through/pratt
Design Details: Pratt through truss with timber stringer approach and timber piers
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Pratt through truss bridge over Snoqualmie River on pedestrian walkway
History: Built 1916; Abandoned 1980; Converted to pedestrian use
Built: 1916

Location: King County

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231016

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Photo taken by Neil Martel in March 2011

231017

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Photo taken by Neil Martel in March 2011

231018

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Photo taken by Neil Martel in March 2011

231019

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Photo taken by Neil Martel in March 2011

231020

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Photo taken by Neil Martel in March 2011

242675

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Photo taken by Joe Mabel

242676

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Photo taken by Mark Griffith

242677

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Photo taken by StubbyFingers

474338

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Photo taken by Patrick Gurwell in July 2019

474339

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Photo taken by Patrick Gurwell in July 2019

474340

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Photo taken by Patrick Gurwell in July 2019

474341

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Photo taken by Patrick Gurwell in July 2019

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Palouse to Cascades State Park Trail - Snoqualmie Tunnel

Status: Open to pedestrians

Location: 47.395253,-121.442328

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Carries Pedestrian trail over
Design: tunnel
Design Details: Tunnel
Total Length: 12144.0 Feet
Span Length: 0.0 Feet

Overview: Tunnel on Pedestrian trail under Snoqualmie Pass
History: Built 1914 by the Chicago, Milwaukee, Saint Paul, and Pacific Railroad. Rehabilitated 2011
Built: 1914

Location: King County

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231217

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East Portal

Photo courtesy of Wikipedia

231218

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West portal

Photo courtesy of Wikipedia

231219

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Date stamp

Photo courtesy of Wikipedia

417632

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Snoqualmie Tunnel west exit

Photo taken by John Anderson in January 2013

417633

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In the middle of the 2.25 mile Snoqualmie Tunnel

Photo taken by John Anderson in January 2013

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Magnolia Bridge

Status: Open to traffic
Slated For Demolition and Replacement

Location: 47.633333,-122.385278

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Carries W Garfield Street over Smith's Cove & Railroad
Design: truss/deck
Design Details: Concrete encased deck truss
Total Length: 3008.0 Feet
Span Length: 86.9 Feet

Overview: Deck truss bridge over Smith's Cove & Railroad on W Garfield Street
History: Built 1929
Built: 1929

Location: King County

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428550

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428551

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474905

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Magnolia Bridge

Photo taken by Mike Seigel

474906

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Magnolia Bridge

Photo taken by Mike Seigel

474907

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Magnolia Bridge

Photo taken by Mike Seigel

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BNSF - Black River Bridge

Status: Open to traffic

Location: 47.474215,-122.250323

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Carries BNSF Railway over Black River
Design: girder/pony/plate
Design Details: Pony plate girder
Total Length: 216.0 Feet
Span Length: 75.0 Feet

Overview: Pony/through plate girder bridge over Black River on BNSF Railway
History: Built 1897
Built: 1897

Location: King County

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240417

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Photo taken by Dave Beedon

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BNSF - Cedar River Bridge

Status: Replaced by a new bridge

Location: 47.480908,-122.200286

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Carries Railroad over Cedar River
Design: truss/through/warren
Design Details: Warren through truss
Total Length: 274.0 Feet
Span Length: 150.0 Feet

Overview: Lost Warren Through truss bridge over Cedar River on Railroad
History: Built 1914; Replaced by a DPG in 2008.
Built: 1914

Location: King County

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240415

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Photo taken by Dave Beedon

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Cedar River Trail Bridge #1

Status: Open to pedestrians only

Location: 47.475238,-122.177072

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Carries Trail over Cedar River
Design: truss/through/warren
Design Details: Warren through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Through truss bridge over Cedar River on Trail
History: Built 1909
Built: 1909

Location: King County

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236891

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Photo taken by Mark Knoke

236892

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Photo taken by Gene Bisbee

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Palouse to Cascades State Park Trail - Hall Creek Bridge

Status: Open to pedestrians only

Location: 47.432973,-121.658032

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Carries Trail over Hall Creek
Design: girder/deck/plate
Design Details: Deck plate girder
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Deck plate girder bridge over Hall Creek on Trail
History: Middle span built in 1998 after a 1988 storm caused a mudslide that destoyed the original middle spans.
Built:

Location: King County

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242371

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Photo taken by Gene Bisbee

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Palouse to Cascades State Park Trail - Change Creek Bridge

Status: Open to pedestrians only

Location: 47.436693,-121.662918

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Carries Trail over Change
Design: girder/deck/plate
Design Details: Deck plate girder
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Deck plate girder bridge over Change Creek on Trail
History:
Built:

Location: King County

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242381

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Photo taken by Daniel Flahiff

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Palouse to Cascades State Park Trail - Mine Creek Bridge

Status: Open to pedestrians only

Location: 47.425157,-121.634975

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Carries Trail over Mine Creek
Design: girder/deck/plate
Design Details: Deck plate girder
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Deck plate girder bridge over Mine Creek on Trail
History:
Built:

Location: King County

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242347

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Photo taken by Mark Griffith

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Palouse to Cascades State Park Trail - Hansen Creek Bridge

Status: Open to pedestrians only

Location: 47.384723,-121.521465

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Carries Trail over Hansen Creek
Design: girder/deck/plate
Design Details: Deck plate girder
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Deck plate girder bridge over Hansen Creek on Trail
History:
Built:

Location: King County

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242346

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Photo taken by Mark Griffith

485611

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Published by the Milwaukee Road

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MILW - Cedar River Bridge #1

Status: Open to Seattle Public Utilities only

Location: 47.414302,-121.795431

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Carries Trail over Cedar River
Design: truss/through/pratt
Design Details: Pratt through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Through truss bridge over Cedar River on Private Road
History: Built 1907-1909
Built: 1907-1909

Location: King County

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244534

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Photo taken by Lance Gleich

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MILW - Cedar River Bridge #2

Status: Open to Seattle Public Utilities traffic

Location: 47.384966,-121.956536

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Carries Trail over Cedar River
Design: truss/through/pratt
Design Details: Pratt through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Through truss bridge over Cedar River on Private Road
History: Built 1907-1909
Built: 1907-1909

Location: King County

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Cedar River Trail Bridge #7

Status: Open to pedestrians only

Location: 47.384384,-121.991758

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Carries Trail over Cedar River
Design: truss/through
Design Details: Through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Through truss bridge over Cedar River on Trail
History: Built 1909
Built: 1909

Location: King County

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Cedar River Trail Bridge #2

Status: Open to pedestrians only

Location: 47.469630,-122.159116

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Carries Trail over Cedar River
Design: girder/pony/plate
Design Details: Pony plate girder
Total Length: 152.9 Feet
Span Length: 125.0 Feet

Overview: Pony/through plate girder bridge over Cedar River on Trail
History: Built 1940
Built: 1940

Location: King County

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Cedar River Trail Bridge #3

Status: Open to pedestrians only

Location: 47.418577,-122.046120

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Carries Trail over Cedar River
Design: truss/through/warren
Design Details: Warren through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Through truss bridge over Cedar River on Trail
History: Built 1909
Built: 1909

Location: King County

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Cedar River Trail Bridge #4

Status: Open to pedestrians only

Location: 47.405595,-122.038110

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Carries Trail over Cedar River
Design: truss/through/pratt
Design Details: Riveted, 5-panel Pratt through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Through truss bridge over Cedar River on Trail
History: Built 1909
Built: 1909

Location: King County

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366019

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Photo provided by IMLS Digital Collections & Content

366020

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Photo provided by IMLS Digital Collections & Content

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Cedar River Trail Bridge #5

Status: Open to pedestrians only

Location: 47.393686,-122.030943

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Carries Trail over Cedar River
Design: truss/deck/warren
Design Details: Warren deck truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Warren deck truss bridge over Cedar River on Trail
History: Built 1909
Built: 1909

Location: King County

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Cedar River Trail Bridge #6

Status: Open to pedestrians only

Location: 47.388905,-122.018283

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Carries Trail over Cedar River
Design: truss/through/warren
Design Details: Warren through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Warren through truss bridge over Cedar River on Trail
History: Built 1909
Built: 1909

Location: King County

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Redmond Central Connector - Sammamish River Trestle

Status: Open to pedestrians only

Location: 47.675088,-122.132650

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Carries Redmond Central Connector over Sammamish River
Design: girder/deck/plate
Design Details: Deck plate girder
Total Length: 222.0 Feet
Span Length: 70.0 Feet

Overview: Deck plate girder bridge over Sammamish River on Redmond Central Connector
History: Built 1921; Abandoned ?; Converted to trail use 2016-17
Built: 1921

Location: King County

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240344

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Photo taken by Andrew Siguenza

240345

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Photo taken by KDavidClark

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Redmond Central Connector - Redmond Way Overpass

Status: Open to pedestrians only

Location: 47.674409,-122.129626

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Carries Redmond Central Connector over Redmond Way/WA 908
Design: girder/pony/plate
Design Details: Pony plate girder
Total Length: 127.0 Feet
Span Length: 109.9 Feet

Overview: Pony/through plate girder bridge over Redmond Way/WA 908 on Redmond Central Connector
History: Built 1972; Converted to trail use 2016-17
Built: 1972

Location: King County

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240663

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Photo taken by KDavidClark

240664

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Photo taken by KDavidClark

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UP - Green River Bridge

Status: Open to traffic

Location: 47.368800,-122.240109

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Carries Railroad over Green River
Design: truss/through/pratt
Design Details: Pratt through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Pratt through truss bridge over Green River on Railroad
History:
Built:

Location: King County

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240416

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Photo taken by Dave Beedon

297338

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UPR Green River Bridge

Photo taken by C Hanchey in August 2014

297339

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UPR Green River Bridge

Photo taken by C Hanchey in August 2014

297340

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UPR Green River Bridge

Photo taken by C Hanchey in August 2014

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UP - Black River Bridge

Status: Open to traffic

Location: 47.474376,-122.250016

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Carries Railroad over Black River
Design: girder/pony/plate
Design Details: Pony plate girder
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Pony/through plate girder bridge over Black River on Railroad
History:
Built:

Location: King County

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240418

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Photo taken by Dave Beedon

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NRM - South Fork Snoqualmie River Bridge

Status: Open to traffic

Location: 47.497096,-121.791740

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Carries Railroad over South Fork Snoqualmie River
Design: truss/through/pratt
Design Details: Pratt through truss 44 span ballasted deck timber trestle
Total Length: 798.0 Feet
Span Length: 160.0 Feet

Overview: Pratt through truss bridge over South Fork Snoqualmie River on Railroad
History: Built 1891 crossing the Yellowstone River in Montana; Moved here 1923-4, Rehabbed 2003-4
Built: 1891

Location: King County

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244541

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Photo taken by Lance Gleich

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Snoqualmie Valley Trail - South Fork Snoqualmie River Bridge

Status: Open to pedestrians only

Location: 47.502118,-121.786493

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Carries Trail over South Fork Snoqualmie River
Design: truss/pony/warren/verticals
Design Details: Warren pony truss with all verticals
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Pony truss bridge over South Fork Snoqualmie River on Trail
History:
Built:

Location: King County

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Snoqualmie Valley Trail - Tolt River Bridge

Status: Open to pedestrians only

Location: 47.640567,-121.907280

View Google Map

Carries Trail over Tolt River
Design: girder/deck/plate
Design Details: Deck plate girder
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Deck plate girder bridge over Tolt River on Trail
History:
Built:

Location: King County

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243220

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Photo taken by Wesley Dreiling

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Snoqualmie Valley Trail - Tokul Creek Trestle

Status: Open to pedestrians only

Location: 47.557067,-121.824325

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Carries Trail over Tokul Creek
Design: girder/deck/plate
Design Details: Deck plate girder
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Deck plate girder bridge over Tokul Creek on Trail
History:
Built:

Location: King County

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242344

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Photo taken by Mark Griffith

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MacDonald Park Bridge

Status: Open to pedestrians only

Location: 47.643925,-121.925966

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Carries Trail over Snoqualmie River
Design: suspension/wire
Design Details: Wire/cable suspension
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Wire suspension bridge over Snoqualmie River on Trail
History:
Built:

Location: King County

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242238

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Photo taken by Art Bromage

242239

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Photo taken by Art Bromage

242240

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Photo taken by Art Bromage

242241

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Photo taken by Art Bromage

242242

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Photo taken by Art Bromage

242243

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Photo taken by Art Bromage

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BN - Snoqualmie Weyerhaeuser Mill Bridge

Status: Removed by USACE

Location: 47.533893,-121.827570

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Carries Burlington Northern Railroad (Nee Northern Pacific Railroad) over Snoqualmie River
Design: truss/through/pratt
Design Details: 1 180' Pratt through truss 1 90' Howe truss (Clad 1925; replaced 1955 by the following DPGs) 1 27' deck plate girder 1 50' deck plate girder 630' pile trestle
Total Length: 887.0 Feet
Span Length: 180.0 Feet

Overview: Lost Pratt through truss bridge over Snoqualmie River on Burlington Northern Railroad (Nee Northern Pacific Railroad)
History: Built 1896 in Wisconsin; Re-erected here 1916; Howe truss replaced in kind 1925; Howe truss replaced w/ DPGs 1955; Sold to Northwest Railway Museum 1975; DPGs destroyed by flooding 1990; Sold to King County for rail reuse 1994; Scrapped 2005
Built: 1916

Location: King County

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243982

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Photo taken by Neil Martel in March 2011

243983

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Only the eastern approach remains

Photo taken by Neil Martel in March 2011

243984

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Photo taken by Neil Martel in March 2011

243985

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Photo taken by Neil Martel in March 2011

243986

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Approach curves to the right at the end where it meets the river.

Photo taken by Neil Martel in March 2011

464896

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BN - Snoqualmie Weyerhaeuser Mill Bridge

prior to demolition in 2005

Photo from TrainMuseum

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NRM - East Fork Kimball Creek Bridge

Status: Open to traffic

Location: 47.517661,-121.817493

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Carries Railroad over East Fork Kimball Creek
Design: girder/deck/plate
Design Details: Deck plate girder
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Deck plate girder bridge over East Fork Kimball Creek on Railroad
History:
Built:

Location: King County

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244542

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Photo taken by Lance Gleich

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Centennial Trail - Kimball Creek Bridge

Status: Open to pedestrians only

Location: 47.535454,-121.830429

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Carries Trail over Kimball Creek
Design: other
Design Details: Other
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Bridge over Kimball Creek on Trail
History:
Built:

Location: King County

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244543

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Photo taken by Lance Gleich

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South Fork Snoqualmie River Bridge

Status: Open to traffic

Location: 47.496667,-121.790000

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Carries North Bend Way over South Fork Snoqualmie River
Design: beam/tee
Design Details: Concrete tee beam
Total Length: 466.9 Feet
Span Length: 80.1 Feet

Overview: Concrete tee beam bridge over South Fork Snoqualmie River on North Bend Way
History: Built 1941
Built: 1941

Location: King County

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244544

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Photo taken by Lance Gleich

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BNSF - Wilburton Trestle

Status: Inactive since 2008
https://www.kingcounty.gov/services/parks-recreation/parks/trails/regional-trails/popular-trails/eastside-rail-corridor.aspx

Location: 47.602958,-122.181305

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Carries BNSF Railway over Richards Creek & 8th/9th Streets
Design: girder/deck/plate
Design Details: Deck plate girder
Total Length: 975.0 Feet
Span Length: 0.0 Feet

Overview: Deck plate girder and timber stringer bridge over Richards Creek & 8th/9th Streets on BNSF Railway
History: Built 1904; Reconstructed 1935, 1941 and 1944
Built: 1935

Location: King County

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388741

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Looking East

Photo taken by Mike Garland in August 2016

388740

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Looking East

Photo taken by Mike Garland in August 2016

388739

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Looking East

Photo taken by Mike Garland in August 2016

388738

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Looking East

Photo taken by Mike Garland in August 2016

246221

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Photo taken by brianhe

462376

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BNSF - Wilburton Trestle

looking east on SE 8th Street

Photo from MYNorthwest

502274

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Photo taken by John Bernhisel in August 2021

502275

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Photo taken by John Bernhisel in August 2021

502276

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Photo taken by John Bernhisel in August 2021

502277

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Photo taken by John Bernhisel in August 2021

502278

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Photo taken by John Bernhisel in August 2021

502279

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Photo taken by John Bernhisel in August 2021

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UP - Green River Bridge (Spur)

Status: Open to traffic

Location: 47.452868,-122.245270

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Carries Railroad over Green River
Design: truss/through/pratt
Design Details: Pratt through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Pratt through truss bridge over Green River on Railroad
History:
Built:

Location: King County

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249401

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Photo taken by Neil Gilham

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Renton Public Library

Status: Open to pedestrians only
MIGHT be doomed?

Location: 47.481789,-122.202483

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Carries Library over Cedar River
Design: slab
Design Details: Slab
Total Length: 80.0 Feet
Span Length: 80.0 Feet

Overview: Slab bridge over Cedar River on Library
History: Built 1964
Built: 1964

Location: King County

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251224

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Photo taken by vmenkov

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Cedar River Bridge

Status: Open to traffic

Location: 47.481944,-122.202778

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Carries WA 900 over Cedar River
Design: girder/deck
Design Details: Deck girder
Total Length: 155.8 Feet
Span Length: 104.0 Feet

Overview: Deck girder bridge over Cedar River on WA 900
History: Built 1940
Built: 1940

Location: King County

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251229

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Cedar River Bridge

View from West

Photo taken by K. A. Erickson in August 2012

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Fifteen Mile Creek Bridge

Status: Replaced by a new bridge

Location: 47.477778,-122.020278

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Carries 240th Ave SE over 15 Mile Creek
Design: beam/stringer/steel
Design Details: Steel stringer
Total Length: 29.9 Feet
Span Length: 29.9 Feet

Overview: Steel stringer bridge over 15 Mile Creek on 240th Ave SE
History: Built 1969, lost 2013
Built: 1969

Location: King County

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255872

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Fifteen Mile Creek Bridge

View from Southeast

Photo taken by K. A. Erickson in June 2013

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Berrydale Overpass

Status: Open to traffic

Location: 47.340833,-122.130556

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Carries Kent-Blk Diamond over Bnsf Rr
Design: beam/stringer/wood
Design Details: Timber stringer
Total Length: 105.0 Feet
Span Length: 23.0 Feet

Overview: Timber stringer bridge over Bnsf Rr on Kent-Blk Diamond
History: Built 1931; rehabilitated 1968
Built: 1931

Location: King County

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255877

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Berrydale Overcrossing

View from East

Photo taken by K. A. Erickson in June 2013

255878

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Berrydale Overcrossing

A clattering noise on the tracks. Sorry rail buffs it is just a service car.

Photo taken by K. A. Erickson in June 2013

255879

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Berrydale Overcrossing

Posts and stringers on South

Photo taken by K. A. Erickson in June 2013

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BNSF - Salmon Bay Bridge No. 4

Status: Open to RR traffic; carries 30-40 passenger and freight trains per day.
BNSF Railway is in the early stages of seeking a permit from the US Coast Guard to replace this bridge, which carries 30-40 passenger and freight trains per day. This bridge rather will have the counterweight system replaced but the Strauss bascule bridge is here to stay.

Location: 47.666642,-122.401934

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Carries BNSF Railroad over Salmon Bay
Design: truss/through/warren
Design Details: Warren through truss bascule
Total Length: 1145.0 Feet
Span Length: 200.0 Feet

Overview: Warren through truss bascule bridge over Salmon Bay on BNSF Railroad ( 2 tracks)
History: Built 1913
Built: 1913

Location: King County

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388743

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BNSF - Salmon Bay Bridge

Raising for boat traffic

Photo taken by Douglas Butler

388742

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BNSF - Salmon Bay Bridge

Lowering for train traffic

Photo taken by Douglas Butler

385245

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Cleveland State University Library Photograph Collection

Photo taken by Douglas Butler

262046

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Bridge 4

View from East

Photo taken by K. A. Erickson in June 2013

262047

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Bridge 4

Warren truss fixed span viewed from West

Photo taken by K. A. Erickson in June 2013

262048

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Bridge 4

Bascule span viewed from West

Photo taken by K. A. Erickson in June 2013

263701

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BNSF - Salmon Bay Bridge No. 4

Closed

Photo taken by Douglas Butler

263702

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BNSF -

Raised

Photo taken by Douglas Butler

263703

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Photo taken by Douglas Butler

263704

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BNSF - Salmon Bay Bridge

Seattle WA this bridge is the example of a Strauss heel trunnion type in rail service

Photo taken by Douglas Butler

263705

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BNSF - Salmon Bay Bridge No 4

Photo taken by Douglas Butler

263706

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BNSF - Salmon Bay Bridge No. 4

Trains passing through

Photo taken by Douglas Butler

264236

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Salmon Bay Railroad Bridge 4

Seattle Washington

Photo taken by Douglas Butler in March 2013

264707

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Photo taken by Douglas Butler

264708

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Photo taken by Douglas Butler in April 2013

264709

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Photo taken by Douglas Butler in March 2013

264710

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Photo taken by Douglas Butler in March 2013

265110

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GN Strauss Heel trunnion bascule bridge open

Photo taken by Douglas Butler

265111

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GN Strauss Heel trunnion bascule bridge

Photo taken by Douglas Butler

265172

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BNSF Salmon Bay Railroad Bridge 4

Better scene in the raised position for ship traffic

Photo taken by Douglas Butler in August 2013

281143

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BNSF Salmon Bay Railroad Bridge No. 4

Bridge raised for boat tour

Photo taken by Douglas Butler in March 2014

291395

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BNS - Salmon Bay Bridge No. 4

Open for traffic

Photo taken by Douglas Butler in February 2014

309621

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BNSF - Salmon Bay Bridge No. 4

Raising of boats

Photo taken by Douglas Butler in December 2014

309799

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BNSF - Salmon Bay Bridge No. 4

Raised

Photo taken by Douglas Butler in December 2014

316654

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BNSF - Salmon Bay Bridge No. 4

Raised about to lower

Photo taken by Douglas Butler in February 2015

334417

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Photo taken by C Hanchey

335739

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BNSF - Salmon Bay Bridge No 4

Strauss Bascule Bridge Company Brake shoes to grip the top and bottom flanges of the operating strut and rack teeth of a Great Northern railroad bridge (Right) At Seattle Washington.

Photo taken by Douglas Butler in May 2013

337317

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BNSF - Salmon Bay Bridge

The Strauss Bascule Bridge Co (Right Side) information

Photo taken by Douglas Butler in May 2014

347414

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Strauss bascule bridge design plan

Photo taken by Douglas Butler in January 2016

349202

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BNSF - Salmon Bay Bridge

Raised of boat traffic

Photo taken by Douglas Butler in February 2016

349203

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BNSF - Salmon Bay Bridge

About raised

Photo taken by Douglas Butler in February 2016

349204

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BNSF - Salmon Bay Bridge

Fully raised

Photo taken by Douglas Butler in February 2016

436143

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Burlington Northern Ballard Bridge

May 29, 1975

Photo taken by James Hudson, collection of Md. Rail Heritage Library

436580

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BNSF - Salmon Bay Bridge No.4

Photo taken by Douglas Butler in February 2013

438532

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Photo taken by Douglas Butler in March 2013

438533

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Photo taken by Douglas Butler in November 2018

448947

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Photo taken BNSF

448948

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Photo taken by BNSF

448949

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Photo taken by BNSF

448950

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Photo taken by MyNortrthwest

448964

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BNSF-SalmonBay Bridge No.4 (Old)

looking west at Chittenden Locks

Photo taken by Geoff Hubbs in September 2013

460846

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Salmon Bay Bridge

Photo taken by Tim Hammond

467662

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Photo taken by Patrick Gurwell in July 2019

473382

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Photo taken by Patrick Gurwell in July 2016

502117

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Photo taken by Patrick Gurwell in July 2016

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NP - Duwamish River Bridge

Status: Open to traffic Reconstructed in the late 1920's 1930's by taking the operating struts from the counterweight bridge tower and placed on the bascule truss the operating machinery was removed from the span,and built into the counterweight bridge tower

Location: 47.570024,-122.352280

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Carries Northern Pacific Railroad over Duwamish River
Design: truss/through/warren
Design Details: Warren through truss bascule
Total Length: 160.0 Feet
Span Length: 0.0 Feet

Overview: Bridge over Duwamish River on Northern Pacific Railroad
History: Built 1911; Reconstructed and energy translated from the span to the counterweight in late 1920's
Built: 1911

Location: King County

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384852

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NP - Duwamish River Bridge

Navigation lights right raised position the light turns green left lowered position the light reverted back to red

Photo taken by Douglas Butler in March 2014

384839

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NP - Duwamish River Bridge

Railway and Engineering Review

Photo taken by Douglas Butler in March 2017

384838

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NP - Duwamish River Bridge

Railway and Engineering Review

Photo taken by Douglas Butler in March 2017

263645

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NP - Duwamish River Bridge

Bridge closed with the counterweight heavy with the drive machinery installed on the bascule span. The struts are fixed to the counterweight bridge tower.

Photo taken by Douglas Butler

263646

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NP - Duwamish River Bridge

As this bridge raises it is decelerated while the struts are carried with the machinery on the span with the pinion carrier on the end of the bascule span.

Photo taken by Douglas Butler

263647

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NP - Duwamish River Bridge

A bridge is fully raised and the struts are a little halfway up through the bridge shafting to the center line of the span.

Photo taken by Douglas Butler

263648

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NP/BNSF - Duwamish River Bridge

The energy in the late 1920's to 1930's is transfered or translated from the span to the counterweight and the drive machinery installed in the counterweight bridge tower, in the closed position the span is heavy for a better suited operation.

Photo taken by Douglas Butler

263649

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NP/BNSF - Duwamish River Bridge

Bridge is reconstructed and raised the struts fixed to the bascule span returns back to the counterweight support system in most heel trunnion bascule bridge the struts supports the counterweight making the counterweight heavy.

Photo taken by Douglas Butler

378303

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Photo taken by Douglas Butler in February 2017

378304

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Northen Pacific Railroad Srauss bascule Construction Seattle WA

Cleveland State Library Photograph Collection

Photo taken by Douglas Butler in May 2015

334325

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NP - Duwamish River Bridge

334326

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Strauss Early Heel Trunnion Bascule bridges Removed

Railway Age

345531

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Public domain to 1923 A 1911 Strauss heel trunnion early design from Railway and Engineering Rewiew

Photo taken by Douglas Butler

347406

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Strauss bascule bridge design plan

Photo taken by Douglas Butler in January 2016

438976

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Photo taken by Otto Theodore (O.T.) Frasch

443333

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Photo taken Scienctific American Supplement

497884

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Photo taken by Wikimedia Commons

497990

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Tech drawing from Douglas Butler

Photo taken by Douglas Butler in May 2021

499250

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Tech drawing from Douglas Butler

Photo taken by Douglas Butler in May 2020

500089

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Public domain to 1923

Photo taken by Railway Engineering News

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NP - Lake Washington Canal Bridge

Status: No longer exists

Location: 47.656237,-122.367794

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Carries Northern Pacific Railroad over Lake Washington Canal
Design: truss/through/warren
Design Details: Warren through truss Strauss heel trunnion
Total Length: 191.0 Feet
Span Length: 0.0 Feet

Overview: Lost Warren through truss bridge over Lake Washington Canal on Northern Pacific Railroad
History: Built 1914 ; removed in 1976
Built: 1914

Location: King County

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388599

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NP - Lake Washington Canal Bridge

Raising

Photo taken by Douglas Butler in May 2017

385277

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Photo taken by Douglas Butler in April 2017

385271

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Photo taken by Douglas Butler in April 2017

263686

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NP - Lake Washington Canal Bridge

Closed

Photo taken by Douglas Butler

281144

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NP- Lake Washington Canal Bridge

Close view detail

Photo taken by Douglas Butler in March 2014

281145

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NP - Lake Washington Canal Bridge

Bridge once in operation is removed

Photo taken by Douglas Butler in March 2014

289735

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NP - Lake Washington Canal Bridge

Seattle WA this bridge removed

Photo taken by Douglas Butler in April 2014

307499

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NP - Lake Washington Canal Bridge

Salmon Bay #4 Northern pacific Rail bridge removed

Photo taken by Douglas Butler in November 2014

307500

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NP - Lake Washington Canal Bridge

Seattle WA

Photo taken by Douglas Butler in November 2014

326788

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NP - Lake Washington Canal Bridge

Raised once in operation

Photo taken by Douglas Butler in February 2015

326789

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NP - Lake Washington Canal Bridge

Long span of 191 foot similar to the 205 double track rail bridge on the same waterway.

Photo taken by Douglas Butler in February 2015

334338

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NP - Lake Washington Canal Bridge

Northern Pacific Historic Association

349201

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NP - Lake Washington Canal Bridge

Removed in 1976

Photo taken by Douglas Butler in February 2016

436357

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NP - Lake Washington Canal Bridge

Removed in 1976

Photo taken by Douglas Butler in October 2018

442479

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NP - Lake Washington Canal Bridge

Photo taken by Preedings Of Second Pan

442480

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NP - Lake Washington Canal Bridge

Photo taken Preedings of Senond Pan

442481

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NP - Lake Washington Canal Bridge

Photo taken by Railway Age

448940

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NP - Lake Washington Canal Bridge

Photo taken by Douglas Butler in June 2019

448941

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NP - Lake Washington Canal Bridge

Photo taken by Douglas Butler in June 2019

448942

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NP - Lake Washington Canal Bridge

Photo taken by Douglas Butler in June 2019

450179

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NP - Lake Washington Canal Bridge

Photo taken by Douglas Butler in June 2019

450180

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NP - Lake Washington Bridge

Photo taken by Douglas Butler in June 2019

450182

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NP - Lake Washington Canal Bridge

Photo from SeattlePI.com

451475

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NP - Lake Washington Canal Bridge

452861

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NP - Lake Washington Canal Bridge

Removed in 1976

Photo taken by Douglas Butler in February 2015

467570

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NP - Lake Washington Canal Bridge

Removed

Photo taken by Douglas Butler in March 2020

490229

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NP - Lake Washington Canal Bridge

Photo taken by University of Washington Libraries

490230

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NP - Lake Washington Canal Bridge

Photo taken by Wikimedia Commons

501865

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Northern Pacific Ship Canal Bridge

Photo taken by Russell C. Johnson, c. 1950's

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South Fork Snoqualmie River Bridge

Status: Open to traffic

Location: 47.499261,-121.787850

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Carries Sr 202 over South Fork Snoqualmie River
Design: girder/pony/plate
Design Details: Pony plate girder
Total Length: 453.1 Feet
Span Length: 95.1 Feet

Overview: Pony/through plate girder bridge over South Fork Snoqualmie River on Sr 202
History: Built 1936
Built: 1936

Location: King County

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Overflow Channel Bridge

Status: Open to traffic

Location: 47.500697,-121.790763

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Carries Sr 202 over Overflow Channel
Design: beam/tee
Design Details: Concrete tee beam
Total Length: 120.1 Feet
Span Length: 29.9 Feet

Overview: Concrete tee beam bridge over Overflow Channel on Sr 202
History: Built 1925
Built: 1925

Location: King County

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Kimball Creek Bridge

Status: Open to traffic

Location: 47.535278,-121.829167

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Carries Sr 202 over Kimball Creek
Design: beam/tee
Design Details: Concrete tee beam
Total Length: 86.0 Feet
Span Length: 35.1 Feet

Overview: Concrete tee beam bridge over Kimball Creek on Sr 202
History: Built 1924
Built: 1924

Location: King County

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Kimball Creek Bridge

Status: Open to traffic

Location: 47.510000,-121.818333

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Carries North Bend Way over Kimball Creek
Design: beam/tee
Design Details: Concrete tee beam
Total Length: 91.9 Feet
Span Length: 56.1 Feet

Overview: Concrete tee beam bridge over Kimball Creek on North Bend Way
History: Built 1941
Built: 1941

Location: King County

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West North Bend Way Bridge

Status: Open to traffic

Location: 47.498333,-121.791667

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Carries West North Bend Way over Overflow Channel
Design: slab
Design Details: Slab
Total Length: 164.1 Feet
Span Length: 20.0 Feet

Overview: Slab bridge over Overflow Channel on West North Bend Way
History: Built 1941
Built: 1941

Location: King County

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Issaquah North Bend Road Bridge

Status: Open to traffic

Location: 47.503611,-121.803889

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Carries Issaquah North Bend Road over Slough
Design: slab
Design Details: Slab
Total Length: 56.1 Feet
Span Length: 22.0 Feet

Overview: Slab bridge over Slough on Issaquah North Bend Road
History: Built 1941
Built: 1941

Location: King County

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South Park Bridge

Status: Open to traffic

Location: 47.529419,-122.314390

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Carries 14 Avenue over Duwamish River
Design: truss/through
Design Details: Through truss bascule
Total Length: 921.0 Feet
Span Length: 198.2 Feet

Overview: Through truss bridge over Duwamish River on 14 Avenue
History: Built 2014
Built: 2014

Location: King County

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289516

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Duwamish River Bridge

New trunnion bridge in place

Photo taken by Douglas Butler in March 2014

315520

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Duwamish River Bridge

Raised of traffic

Photo taken by Douglas Butler in February 2015

349052

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Photo taken by Happybluemo

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Whitney Bridge

Status: Replaced by a new bridge

Location: 47.282313,-122.054984

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Carries Whitney Road over Green River
Design: truss/through/parker
Design Details: Parker through truss
Total Length: 295.9 Feet
Span Length: 180.1 Feet

Overview: Lost Parker through truss bridge over Green River on Whitney Road
History: Built 1925; removed when new bridge built c. 1990 and placed in field, scrapped c. 2008
Built: 1925

Location: King County

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474908

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Whitney Bridge

sitting in park after removal

Photo taken by Joe Mabel in 2009

477220

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Whitney Bridge

June 1932 view

Photo from King County Archives

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Alaskan Way Footbridge

Status: Open to pedestrians only

Location: 47.603056,-122.337500

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Carries Pedestrian over Western Ave
Design: girder/pony/plate
Design Details: Pony plate girder
Total Length: 182.1 Feet
Span Length: 86.9 Feet

Overview: Pony/through plate girder bridge over Western Ave on Pedestrian
History: Built 1908
Built: 1908

Location: King County

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Latona Bridge

Status: No longer exists

Location: 47.652438,-122.322721

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Carries Trolley Cars over Union Lake/Lake Washington Canal
Design: truss/through/pennsylvania
Design Details: Pennsylvania through truss swing
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Lost Pennsylvania through truss bridge over Union Lake/Lake Washington Canal on Trolley Cars
History: Built 1890; Rebuilt 1909 to allow pedestrian & vehicular traffic; Replaced 1919
Built: 1890

Location: King County

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283640

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Latona Bridge

Two bridges close together.

Photo taken by Douglas Butler in May 2014

489304

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Photo taken by Paul Dorpat

489305

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Photo taken by Paul Dorpat

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North Bridge

Status: Replaced by a new bridge

Location: 47.571175,-122.354215

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Carries Spokane Street West Waterway over Duwamish River
Design: truss/through/parker
Design Details: Parker through truss bascule
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Lost Parker through truss bridge over Duwamish River on Spokane Street West Waterway
History: Built 1924; Struck June 11, 1978; Replaced 1991
Built: 1924

Location: King County

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284327

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Old Spokane Street Bridge

Bridge replaced

Photo taken by Douglas Butler in April 2013

366023

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Photo taken by Seattle Municipal Archives

488669

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Stuck Bridge

Photo taken by Clay Eals

488670

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NT bridge rammed THEN

Photo taken by Clay Eals

501668

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North/Spokane Street Bridge

Photo taken by Aubrey Cohen

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NE Pacific Street Bridge

Status: Open to traffic

Location: 47.650652,-122.305602

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Carries NE Pacific Street over Rainier Vista
Design: arch/deck/closed
Design Details: Closed-spandrel arch
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Closed-spandrel arch bridge over Rainier Vista on NE Pacific Street
History:
Built:

Location: King County

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Burke-Gilman Trail - Sammamish River Bridge

Status: Open to pedestrians only

Location: 47.750618,-122.210108

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Carries Burke-Gilman Trail over Sammamish River Bridge
Design: girder/deck/plate
Design Details: Deck plate girder
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Deck plate girder bridge over Sammamish River Bridge on Burke-Bilman Trail
History:
Built:

Location: King County

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286448

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Photo taken by "By & By"

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Burke-Gilman Trail - Rainier Vista Bridge

Status: Open to pedestrians only

Location: 47.650848,-122.305698

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Carries Burke-Gilman Trail over Rainier Vista
Design: arch/deck/closed
Design Details: Concrete arch
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Concrete arch bridge over Rainier Vista on Burke-Gilman Trail
History:
Built:

Location: King County

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286449

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Photo taken by Annika Wiesenbach

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Delridge Overpass

Status: Open to pedestrians only

Location: 47.563156,-122.363357

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Carries Pedestrian Pathway over Delridge Way
Design: frame/concrete
Design Details: Concrete rigid frame
Total Length: 224.1 Feet
Span Length: 59.1 Feet

Overview: Concrete rigid frame bridge over Delridge Way on Pedestrian Pathway
History: Built 1960
Built: 1960

Location: King County

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Aurora Overpass

Status: Open to pedestrians only

Location: 47.702859,-122.344624

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Carries Pedestrian Pathway over Aurora Avenue
Design: frame/concrete
Design Details: Concrete rigid frame
Total Length: 253.9 Feet
Span Length: 96.1 Feet

Overview: Concrete rigid frame bridge over Aurora Avenue on Pedestrian Pathway
History: Built 1961
Built: 1961

Location: King County

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Burke-Gilman Trail - Pay Streak Bridge

Status: Open to pedestrians only

Location: 47.652235,-122.310481

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Carries Burke-Gilman Trail over Pay Streak (Alaska-Yukon-Pacific Exposition Name)
Design: frame/concrete
Design Details: Concrete rigid frame
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Concrete rigid frame bridge over Pay Streak (Alaska-Yukon-Pacific Exposition Name) on Burke-Gilman Trail
History:
Built:

Location: King County

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286450

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Photo taken by Rob Ketcherside

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Burke-Gilman Trail - Sand Point Way NE Overpass

Status: Open to pedestrians only

Location: 47.696621,-122.277049

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Carries Burke-Gilman Trail over Sand Point Way NE
Design: beam/stringer/steel
Design Details: Steel stringer
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Steel stringer bridge over Sand Point Way NE on Burke-Gilman Trail
History:
Built:

Location: King County

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Schmitz Park Bridge

Status: Open to traffic

Location: 47.577222,-122.403333

View Google Map

Carries Sw Admiral Way over Schmitz Blvd, Ravine
Design: frame/concrete
Design Details: Concrete rigid frame
Total Length: 174.9 Feet
Span Length: 174.9 Feet

Overview: Concrete rigid frame bridge over Schmitz Blvd, Ravine on Sw Admiral Way
History: Built 1935
Built: 1935

Location: King County

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Divider

MILW - South Fork Snoqualmie River Covered Bridge

Status: Replaced by a new bridge

Location: 47.502058,-121.786511

View Google Map

Carries Chicago, Milwaukee, St. Paul & Pacific over South Fork Snoqualmie River
Design: truss/through/howe
Design Details: Howe through truss
Total Length: 143.0 Feet
Span Length: 0.0 Feet

Overview: Lost Through truss bridge over South Fork Snoqualmie River on Chicago, Milwaukee, St. Paul & Pacific
History:
Built: 1910

Location: King County

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291121

Click to visit page.

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Cross Kirkland Corridor - Kirkland Way Overpass

Status: Open to pedestrians only

Location: 47.676113,-122.191307

View Google Map

Carries Cross Kirkland Corridor over Kirkland Way
Design: slab
Design Details: Slab
Total Length: 149.0 Feet
Span Length: 53.2 Feet

Overview: Slab bridge over Kirkland Way on Cross Kirkland Corridor
History: Built 1965
Built: 1965

Location: King County

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Divider

292592

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Photo taken by Kurt Clark

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BNSF - Auburn Way South Overpass

Status: Replaced by a new bridge

Location: 47.303587,-122.225682

View Google Map

Carries BNSF Railway over Auburn Way South
Design: arch/deck/closed
Design Details: Closed-spandrel arch
Total Length: 111.9 Feet
Span Length: 28.9 Feet

Overview: Lost Closed-spandrel arch bridge over Auburn Way South on BNSF Railway
History: Built 1910; Replaced 1994
Built: 1910

Location: King County

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BNSF - WA 167 Overpass

Status: Replaced by a new bridge

Location: 47.475984,-122.215015

View Google Map

Carries BNSF Railway over WA 167
Design: beam/stringer/steel
Design Details: Steel stringer
Total Length: 86.9 Feet
Span Length: 49.9 Feet

Overview: Lost Steel stringer bridge over WA 167 on BNSF Railway
History: Built 1925; Replaced 2007
Built: 1925

Location: King County

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Third Spokane Street Drawbridge

Status: Replaced by a new bridge

Location: 47.571475,-122.353411

View Google Map

Carries Spokane Street & Streetcars over Duwamish River
Design: truss/through/pratt
Design Details: Pratt through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Lost Pratt through truss bridge over Duwamish River on Spokane Street & Streetcars
History: Built 1917; Replaced by a new road bridge 1924, streetcar line closed 1928.
Built: 1917

Location: King County

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306380

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Riverside Bridge

Removed

Photo taken by Douglas Butler in October 2014

Divider

Second Spokane Street Drawbridge

Status: Replaced by a new bridge

Location: 47.571402,-122.353409

View Google Map

Carries Spokane Street & Streetcars over Duwamish River
Design: truss/through/pratt
Design Details: Pratt through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Pratt through truss bridge over Duwamish River on Spokane Street & Streetcars
History: Built 1907; Replaced 1917
Built: 1907

Location: King County

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W. Lake Union Center Pedestrian Bridge

Status: Open to pedestrians only

Location: 47.632397,-122.340916

View Google Map

Carries pedestrian pathway over Westlake Ave N
Design: suspension/stayed
Design Details: Cable-stayed
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Cable-stayed bridge over Westlake Ave N on pedestrian pathway
History:
Built:

Location: King County

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Riverton Drawbridge

Status: Removed but not replaced

Location: 47.492378,-122.280734

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Carries Old Military Road over Duwamish River
Design: truss/through/double-warren
Design Details: Double-intersection Warren through truss swing bridge
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Lost Double-intersection Warren through truss swing bridge over Duwamish River on Old Military Road
History: Built 1903 of Douglas Fir & Cedar; Closed 1919; Removed 1927
Built: 1903

Location: King County

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307498

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Riverton Drawbridge

Removed

Photo taken by Douglas Butler in November 2014

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Grant Street Streetcar Bridge

Status: Superstructure replaced

Location: 47.529604,-122.314218

View Google Map

Carries Grant Street Electric Railway over Duwamish River
Design: truss/through/howe
Design Details: Howe through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Lost Howe through truss swing bridge over Duwamish River on 14 Street on Grant Street Electric Railway
History:
Built:

Location: King County

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308678

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South Park Bridge

Replaced

Photo taken by Douglas Butler in November 2014

337154

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Photo taken by Washington State History

366021

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Photo taken by Frank La Roche

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Yesler Way Bridge

Status: Open to traffic

Location: 47.601667,-122.328889

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Carries Yesler Way over 4th Ave S
Design: girder
Design Details: Girder
Total Length: 78.1 Feet
Span Length: 50.9 Feet

Overview: Girder bridge over 4th Ave S on Yesler Way
History: Built 1909; rehabilitated 1975
Built: 1909

Location: King County

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315824

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Historic features on the Yesler Way Bridge

Seattle Department of Transportation

315825

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Existing Yesler Way Bridge Over 4th Ave

Seattle Department of Transportation

315826

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Yesler Way Bridge Over 4th Ave S (1920)

Seattle Department of Transportation

315827

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Yesler Way Bridge Over 4th Ave S under construction in 1910

Seattle Department of Transportation

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Western Avenue Sky Bridge

Status: Open to pedestrians only

Location: 47.609135,-122.341844

View Google Map

Carries over Western Avenue
Design: truss/through
Design Details: Through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Bridge over Western Avenue
History:
Built:

Location: King County

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469459

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Photo taken by Mike Garland in November 2017

469460

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Photo taken by Mike Garland in November 2017

469461

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Photo taken by Mike Garland in November 2017

469462

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Photo taken by Mike Garland in November 2017

469463

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Photo taken by Mike Garland in November 2017

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Green River Gorge Bridge

Status: Unknown status

Location: 47.288020,-121.967513

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Carries Pipeline over Green River
Design: suspension/wire
Design Details: Catenary suspension
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Wire suspension bridge over Green River on Pipeline
History:
Built:

Location: King County

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PSE - Duwamish River Bridge

Status: Removed

Location: 47.500464,-122.286332

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Carries Puget Sound Electric Railway over Duwamish River
Design: truss/through/howe
Design Details: Howe through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Lost Howe through truss bridge over Duwamish River on Puget Sound Electric Railway
History:
Built:

Location: King County

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363509

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Public Domain: Published Prior to 1923

363568

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PSE - Duwamish River Bridge

Removed

Photo taken by Douglas Butler in September 2016

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BNSF - Green River Bridge

Status: Open to traffic

Location: 47.302292,-122.176037

View Google Map

Carries BNSF Railway over Green River
Design: truss/through/pratt
Design Details: Pratt through truss
Total Length: 282.0 Feet
Span Length: 155.0 Feet

Overview: Pratt through truss bridge over Green River on BNSF Railway
History: Built 1900, unspecified alterations made 1919
Built: 1900

Location: King County

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BN - Buckley Viaduct

Status: Removed

Location: 47.174357,-122.020105

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Carries Burlington Northern Railroad over White River
Design: truss/deck/baltimore
Design Details: Baltimore deck truss
Total Length: 2001.0 Feet
Span Length: 250.0 Feet

Overview: Lost Baltimore deck truss bridge over White River on Burlington Northern Railroad
History: Built 1908; Abandoned & removed ca. 1982
Built: 1908

Location: King County

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366013

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Public Domain: Published Prior to 1923

366014

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Public Domain: Published Prior to 1923

417599

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White River Trestle

Enumclaw Historical Society, Karl Jensen photographer

417600

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White River Trestle 1887

Enumclaw Historical Society

417601

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White River Trestle

Enumclaw Historical Society

417602

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White River Trestle destroyed in 1906 flood

Enumclaw Historical Society

417603

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White River Trestle down

Enumclaw Historical Society

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PSE - 155th Street Overpass

Status: Removed

Location: 47.741462,-122.345864

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Carries Puget Sound Electric Railway over 155th Street
Design: girder/pony/plate
Design Details: Pony plate girder
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Lost Pony/through plate girder bridge over 155th Street on Puget Sound Electric Railway
History:
Built:

Location: King County

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366016

Click to visit page.

Photo provided by IMLS Digital Collections & Content

366017

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Photo provided by IMLS Digital Collections & Content

Divider

Oxbow Bridge

Status: Replaced by a new bridge

Location: 47.542410,-122.334228

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Carries 1st Avenue South over Duwamish Waterway
Design: truss/through/warren
Design Details: Warren through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Lost Warren through truss bridge over Duwamish Waterway on 1st Avenue South
History: Built 1911; Draw mechanism replaced 1929; Replaced 1956
Built: 1911

Location: King County

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366018

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Photo provided by IMLS Digital Collections & Content

366145

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1st South Avenue Bridge (Old)

Replaced in 1956

Photo taken by Douglas Butler in September 2016

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BNSF - Green River Bridge (Kent)

Status: Open to traffic

Location: 47.361227,-122.232837

View Google Map

Carries BNSF Railway over Green River
Design: truss/through/warren
Design Details: Warren through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Warren through truss bridge over Green River on BNSF Railway
History: Built 1907
Built: 1907

Location: King County

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Divider

BNSF - White River Bridge

Status: Open to traffic

Location: 47.265623,-122.230004

View Google Map

Carries BNSF Railway over White River
Design: truss/through/pratt
Design Details: Pratt through truss
Total Length: 185.0 Feet
Span Length: 185.0 Feet

Overview: Pratt through truss bridge over White River on BNSF Railway
History: Built 1909
Built: 1909

Location: King County

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Stone Way Bridge

Status: Removed

Location: 47.644187,-122.341006

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Carries Electric Railroad over Lake Union
Design: truss/through/pratt
Design Details: Pratt through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Pratt through truss bridge over Lake Union on Electric Railroad
History: Built 1911; Demolished 1917
Built: 1911

Location: King County

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Divider

366024

Click to visit page.

Photo taken by Seattle Municipal Archives

366025

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Photo taken by Seattle Municipal Archives

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SECo - Lesci Park Bridge

Status: Abandoned

Location: 47.601593,-122.287661

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Carries over Lake Washington Boulevard
Design: arch/deck/closed
Design Details: Closed-spandrel arch
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Abandoned closed-spandrel arch bridge over Lake Washington Boulevard
History:
Built:

Location: King County

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Divider

366026

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Photo taken by Joe Mabel

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Iron Goat Trail - Bridge #402

Status: Open to pedestrians only

Location: 47.716650,-121.172280

View Google Map

Carries over
Design: truss/through/howe
Design Details: Howe through truss
Total Length: 110.0 Feet
Span Length: 0.0 Feet

Overview: Through truss bridge
History:
Built:

Location: King County

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Divider

383985

Click to visit page.

Information Kiosk

Photo taken by Mike Garland in August 2016

383984

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Photo taken by Mike Garland in August 2016

383983

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Looking East

Photo taken by Mike Garland in August 2016

383982

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Looking East

Photo taken by Mike Garland in August 2016

383981

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West Abutment

Photo taken by Mike Garland in August 2016

383980

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West Abutment

Photo taken by Mike Garland in August 2016

383979

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West Approach

Looking west from the bridge.

Photo taken by Mike Garland in August 2016

383978

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Looking South

This is the view you get from about mid span.

Photo taken by Mike Garland in August 2016

383976

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Bridge Detail

Photo taken by Mike Garland in August 2016

383977

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Looking West

Photo taken by Mike Garland in August 2016

383975

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East Abutment

Photo taken by Mike Garland in August 2016

383974

Click to visit page.

West Abutment

Photo taken by Mike Garland in August 2016

383973

Click to visit page.

West Abutment

Photo taken by Mike Garland in August 2016

383972

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Looking West

Photo taken by Mike Garland in August 2016

383971

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Center Pier

Photo taken by Mike Garland in August 2016

383970

Click to visit page.

Looking West

Photo taken by Mike Garland in August 2016

383969

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Builder's Mark

Photo taken by Mike Garland in August 2016

383968

Click to visit page.

Looking West

Photo taken by Mike Garland in August 2016

383967

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East Portal

Photo taken by Mike Garland in August 2016

383966

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East Approach

Photo taken by Mike Garland in August 2016

383965

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East Approach

Photo taken by Mike Garland in August 2016

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Iron Goat Trail - Tunnel #14

Status: Intact but closed to all traffic

Location: 47.719198,-121.176378

View Google Map

Carries over
Design: tunnel
Design Details: Tunnel
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Tunnel
History: Built 1892
Built: 1892

Location: King County

View Bridge Information In Wayback Machine

Divider

384805

Click to visit page.

West Portal

Photo taken by Mike Garland in August 2016

384804

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West Entrance

Looking west from the entrance.

Photo taken by Mike Garland in August 2016

384803

Click to visit page.

West Entrance

Looking west from the entrance.

Photo taken by Mike Garland in August 2016

384802

Click to visit page.

West Entrance

Looking west from the entrance.

Photo taken by Mike Garland in August 2016

384801

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West Entrance

Looking down into the tunnel from the entrance.

Photo taken by Mike Garland in August 2016

384800

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West Entrance

Looking down into the tunnel from the entrance.

Photo taken by Mike Garland in August 2016

384799

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West Entrance

Looking down into the tunnel from the entrance.

Photo taken by Mike Garland in August 2016

384798

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West Entrance

A lot of debris has partially filled in the entrance.

Photo taken by Mike Garland in August 2016

384796

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West Portal

Photo taken by Mike Garland in August 2016

384797

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West Portal

Photo taken by Mike Garland in August 2016

384795

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West Approach

Photo taken by Mike Garland in August 2016

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Iron Goat Trail - Embro Tunnel

Status: Intact but closed to all traffic

Location: 47.719329,-121.174085

View Google Map

Carries over
Design: tunnel
Design Details: Tunnel
Total Length: 462.0 Feet
Span Length: 0.0 Feet

Overview: Tunnel
History: Built 1916
Built: 1916

Location: King County

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Divider

384876

Click to visit page.

East Arch Detail

Photo taken by Mike Garland in August 2016

384875

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East Arch

Photo taken by Mike Garland in August 2016

384874

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East Arch

It is fairly full of debris, and the east entrance of the tunnel itself is hopelessly buried.

Photo taken by Mike Garland in August 2016

384873

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East Arch

Photo taken by Mike Garland in August 2016

384872

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East Arch Entrance

This is the 39' long double track concrete arch at the east portal of Embro Tunnel.

Photo taken by Mike Garland in August 2016

384819

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Photo taken by Mike Garland in August 2016

384818

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Looking West

Looking out of the west entrance.

Photo taken by Mike Garland in August 2016

384817

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Photo taken by Mike Garland in August 2016

384816

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Photo taken by Mike Garland in August 2016

384815

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Photo taken by Mike Garland in August 2016

384814

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Photo taken by Mike Garland in August 2016

384813

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Photo taken by Mike Garland in August 2016

384812

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Photo taken by Mike Garland in August 2016

384811

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West Entrance

There is quite a bit of rock and remnants of the timber lining littering the tunnel.

Photo taken by Mike Garland in August 2016

384810

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West Entrance

Looking up at the upper entrance arch.

Photo taken by Mike Garland in August 2016

384809

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West Entrance

Photo taken by Mike Garland in August 2016

384808

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West Portal

Photo taken by Mike Garland in August 2016

384807

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West Portal

Photo taken by Mike Garland in August 2016

384806

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West Portal

Photo taken by Mike Garland in August 2016

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Iron Goat Trail - Windy Point Tunnel

Status: Intact but closed to all traffic

Location: 47.713773,-121.156143

View Google Map

Carries over
Design: tunnel
Design Details: Tunnel
Total Length: 1202.0 Feet
Span Length: 0.0 Feet

Overview: Tunnel
History: Built 1914
Built: 1914

Location: King County

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Divider

385332

Click to visit page.

Tunnel Detail

Looking at the tunnel roof inside the west entrance.

Photo taken by Mike Garland in August 2016

385331

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Tunnel Detail

Looking at the tunnel wall just inside the west entrance.

Photo taken by Mike Garland in August 2016

385330

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Looking West

Looking out of the west entrance from inside the tunnel.

Photo taken by Mike Garland in August 2016

385329

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Looking East

Photo taken by Mike Garland in August 2016

385328

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Looking East

Photo taken by Mike Garland in August 2016

385327

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Tunnel Detail

Looking at the tunnel wall just inside the west entrance.

Photo taken by Mike Garland in August 2016

385326

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Tunnel Detail

Looking at the tunnel wall just inside the west entrance.

Photo taken by Mike Garland in August 2016

385325

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Looking East

Photo taken by Mike Garland in August 2016

385324

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Looking East

View from just inside the west entrance.

Photo taken by Mike Garland in August 2016

385322

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West Entrance

Photo taken by Mike Garland in August 2016

385323

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Information Kiosk

Photo taken by Mike Garland in August 2016

385321

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West Entrance

Photo taken by Mike Garland in August 2016

385320

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Tunnel Date

Photo taken by Mike Garland in August 2016

385319

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West Portal

Photo taken by Mike Garland in August 2016

385318

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West Portal

Photo taken by Mike Garland in August 2016

385317

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West Portal

Photo taken by Mike Garland in August 2016

385316

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West Portal

Photo taken by Mike Garland in August 2016

385315

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West Portal

Photo taken by Mike Garland in August 2016

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Snoqualmie Falls Motel Covered Bridge

Status:

Location: 47.542814,-121.836509

View Google Map

Carries over Railroad Avenue (Washington State Route 202)
Design: truss/through/pratt
Design Details: Pratt through truss
Total Length: 103.0 Feet
Span Length: 10.5 Feet

Overview: Pratt through truss bridge over Railroad Avenue (Washington State Route 202)
History: Built 1986
Built: 1986

Location: King County

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Divider

387544

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Looking South

Photo taken by Mike Garland in August 2016

387543

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Looking South

Photo taken by Mike Garland in August 2016

387542

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Looking South

Photo taken by Mike Garland in August 2016

387541

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Looking South

Photo taken by Mike Garland in August 2016

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Edgewick Bridge 617B

Status: Open to traffic

Location: 47.453903,-121.716467

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Carries 468th Ave SE over South Fork Snoqualmie River
Design: truss/through/polygonal/verticals
Design Details: Polygonal Warren through truss with all verticals
Total Length: 212.9 Feet
Span Length: 205.1 Feet

Overview: Through truss bridge over South Fork Snoqualmie River on 468th Ave SE
History: Built 2004
Built: 2004

Location: King County

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Divider

388303

Click to visit page.

Bridge Detail

Photo taken by Mike Garland in August 2016

388301

Click to visit page.

Bridge Detail

Photo taken by Mike Garland in August 2016

388302

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Bridge Detail

Photo taken by Mike Garland in August 2016

388300

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South Portal Mirrors

Photo taken by Mike Garland in August 2016

388299

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Dedication Plaque

Photo taken by Mike Garland in August 2016

388298

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South Entrance

Photo taken by Mike Garland in August 2016

388297

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Bridge Detail

Photo taken by Mike Garland in August 2016

388296

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Looking South

Photo taken by Mike Garland in August 2016

388295

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Looking East

View of the South Fork Snoqualmie River from the bridge.

Photo taken by Mike Garland in August 2016

388294

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Bridge Detail

Photo taken by Mike Garland in August 2016

388293

Click to visit page.

Bridge Detail

Photo taken by Mike Garland in August 2016

388292

Click to visit page.

Bridge Detail

Photo taken by Mike Garland in August 2016

388291

Click to visit page.

Bridge Detail

Photo taken by Mike Garland in August 2016

388290

Click to visit page.

Bridge Detail

Photo taken by Mike Garland in August 2016

388289

Click to visit page.

Bridge Detail

Mirrors.

Photo taken by Mike Garland in August 2016

388288

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North Entrance

Photo taken by Mike Garland in August 2016

388287

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North Approach

Photo taken by Mike Garland in August 2016

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Latona Railroad Bridge (1902)

Status: No longer exists

Location: 47.652573,-122.319326

View Google Map

Carries Seattle Electric Railway over Lake Washington Canal
Design: girder/pony/plate
Design Details: Pony plate girder bascule draw
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Lost Pony/through plate girder bridge over Lake Washington Canal on Seattle Electric Railway
History: Built 1902; removed 1932
Built: 1902

Location: King County

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Divider

400158

Click to visit page.

Removed

Photo taken by Douglas Butler in August 2017

489306

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Photo taken by Seattle Muncipal Archive

Divider

Cedar River Trail - WA169 Overpass

Status: Removed

Location: 47.472424,-122.167566

View Google Map

Carries Cedar River Trail over WA169
Design: girder/pony/plate
Design Details: Pony plate girder
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Lost Pony/through plate girder bridge over WA169 on Cedar River Trail
History:
Built:

Location: King County

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Cedar River Trail Bridge #2 (Old)

Status: Removed

Location: 47.469630,-122.159116

View Google Map

Carries Cedar River Trail over Cedar River
Design: truss/through/warren
Design Details: Warren through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Lost Warren through truss bridge over Cedar River on Cedar River Trail
History: Built 1909; Removed ca 1992
Built: 1909

Location: King County

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Divider

Elliot Bay Drawbridge

Status: No longer exists

Location: 47.587277,-122.358074

View Google Map

Carries Railroad over Elliot Bay
Design: truss/through/polygonal/verticals
Design Details: Polygonal Warren through truss with all verticals
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Lost Polygonal Warren pony truss with alternating verticals bridge over Elliot Bay on Railroad
History:
Built: 1890

Location: King County

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Divider

417502

Click to visit page.

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Amgen Helix Bridge

Status: Open to pedestrians and cyclists

Location: 47.628106,-122.371853

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Carries Pedestrian, bike over BNSF (11 sets of tracks)
Design: other
Design Details: Tensioned membrane fabric, steel Bridge is built in the shape of a DNA molecule
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Bridge over BNSF (11 sets of tracks) on Pedestrian, bike
History: Built 2004
Built: 2004

Location: King County

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417710

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Helix-DNA Bridge

Photo taken by John Anderson in October 2014

417711

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Helix-DNA Bridge

Photo taken by John Anderson in February 2015

417712

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Helix-DNA Bridge Tensioned Membrane

Photo taken by John Anderson in February 2015

417713

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Helix-DNA Bridge

Photo taken by John Anderson in February 2015

417714

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Runnels on approach to Helix-DNA Bridge

Photo taken by John Anderson in February 2015

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NP - Sammamish River Bridge (Old)

Status: Replaced by a new bridge

Location: 47.675088,-122.132650

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Carries Northern Pacific Railroad over Sammamish River
Design: truss/through/double-warren
Design Details: Wooden double-intersection Warren through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Lost Double-intersection Warren through truss bridge over Sammamish River on Northern Pacific Railroad
History: Built 1888; Replaced 1921
Built: 1888

Location: King County

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Redmond Central Connector - 154th Avenue NE Overpass

Status: Open to pedestrians only

Location: 47.675429,-122.133940

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Carries Redmond Central Connector over 154th Avenue NE
Design: beam/stringer/steel
Design Details: Steel stringer
Total Length: 168.0 Feet
Span Length: 44.9 Feet

Overview: Steel stringer bridge over 154th Avenue NE on Redmond Central Connector
History: Built 1960; Converted to trail use 2016-17
Built: 1960

Location: King County

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Renton Covered Bridge

Status: Destroyed by fire

Location: 47.489359,-122.265420

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Carries 129th Street over Northern Pacific, Union Pacific, and Great Northern Railroads
Design: truss/through
Design Details: Through truss with wooden trestle approaches
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Lost Through truss bridge over Northern Pacific, Union Pacific, and Great Northern Railroads on 129th Street
History: Built 1911
Built: 1911

Location: King County

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417898

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May 23, 1951

501484

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Allentown Bridge, South Seattle

Photo taken by Russell C. Johnson

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GN - Horseshoe Tunnel

Status: Collapsed

Location: 47.720457,-121.214423

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Carries over
Design: tunnel
Design Details: Tunnel
Total Length: 1512.0 Feet
Span Length: 0.0 Feet

Overview: Lost Tunnel
History: Built 1893 bypassed 1929 collapsed on unknown date
Built: 1893

Location: King County

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418063

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]

418064

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Photo taken by Leslie R trick

418563

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418963

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Northern most portal

panaramio

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I-5 Weedin Place Fallout Shelter

Status: Open to pedestrians only

Location: 47.677124,-122.320395

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Carries I-5 over
Design: culvert/concrete
Design Details: Concrete culvert
Total Length: 57.1 Feet
Span Length: 57.1 Feet

Overview: Concrete culvert bridge on I-5
History: Built 1963
Built: 1963

Location: King County

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423268

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Entrance

Courtesy of the Washington Department of Transportation

423269

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Emergency Escape Tunnel

Courtesy of the Washington Department of Transportation

423270

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Interior

Courtesy of the Washington Department of Transportation

423271

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Interior

Courtesy of the Washington Department of Transportation

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Pacific States Lumber Company Cedar River Trestle

Status: No longer exists

Location: 47.385520,-121.870169

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Carries Pacific States Lumber Company Railroad over Cedar River over Cedar River
Design: beam/stringer/wood
Design Details: Timber stringer
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Lost Timber stringer bridge over Cedar River on Pacific States Lumber Company Railroad over Cedar River
History:
Built:

Location: King County

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425260

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Old Oregon Photos

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BNSF -Stampede Pass line

Status: Open to traffic

Location: 47.334046,-121.903975

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Carries railroad over H.W.channel
Design: other
Design Details: Other
Total Length: 61.0 Feet
Span Length: 0.0 Feet

Overview: Bridge over H.W.channel on railroad
History: This 2 RCT bridge was built in 1912 for the Northern Pacific Railroad
Built: 1912

Location: King County

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446987

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Bridge 101.1

BNSF 2 RCT bridge built in 1912 by Northern Pacific Railway

Photo taken by Brian Ambrose

446988

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Bridge 101.1

BNSF 2 RCT bridge built in 1912 by Northern Pacific Railway

Photo taken by Brian Ambrose

446989

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Bridge 101.1

BNSF 2 RCT bridge built in 1912 by Northern Pacific Railway

Photo taken by Brian Ambrose

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BNSF - Salmon Bay Lift Bridge No. 4

Status: Never built

Location: 47.667007,-122.402007

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Carries Burlington Northern & Santa Fe over Lake Washington Canal
Design: truss/through/warren/verticals
Design Details: Warren through truss with all verticals
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Warren through truss with all verticals bridge over Lake Washington Canal on Burlington Northern & Santa Fe
History: Proposed, but never built
Built:

Location: King County

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448944

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Photo taken by Douglas Butler in June 2019

448945

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Photo taken by Douglas Butler in June 2019

448946

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Proposed Design Plan

Photo taken by BNSF

474116

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BNSF - Salmon Bay Lift Bridge No . 4 (New)

BNSF Conceptual Design

Drawing from BNSF

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East Channel Bridge

Status: Replaced by a new bridge

Location: 47.578817,-122.200535

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Carries I-90 (formerly US-10/Sunset Highway) over Lake Washington
Design: girder/deck/concrete
Design Details: Concrete deck girder
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Lost Concrete deck girder bridge over Lake Washington on I-90(formerly US 10/Sunset Highway)
History: Completed in 1940 as part of Lake Washington floating bridge project, replacing a deteriorating timber bridge; demolished and replaced circa 1981 as part of I-90 expansion
Built: 1940

Location: King County

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457572

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East Channel Bridge

C.1950

Eastside heritage Center

457573

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East Channel Bridge

C.1940

WSDOT archives

457574

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East Channel Bridge

C.1979

A Look to the past

457575

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Photo taken by Harry Jacoby

457576

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East Channel Bridge

C.1950

Eastside heritage Center

457577

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East Channel Bridge

C.1940

WSDOT archives

457578

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East Channel Bridge

C.1979

A Look to the past-Mercer Island

457579

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East Channel Bridge

C.1956

A Look to the past-Mercer Island

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BNSF - Great Northern Tunnel

Status: Open to traffic

Location: 47.600774,-122.329242

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Carries BNSF Railroad over downtown Seattle
Design: tunnel
Design Details: Tunnel
Total Length: 5000.0 Feet
Span Length: 0.0 Feet

Overview: Tunnel under downtown Seattle on BNSF Railroad
History: Built 1904
Built: 1904

Location: King County

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458515

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BNSF - Great Northern Tunnel

south portal at King Street

Photo taken by Joe Mabel

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BNSF - Green River Trestle

Status: Open to traffic

Location: 47.214229,-121.433863

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Carries BNSF Railway over Green River
Design: girder/deck/plate
Design Details: Deck plate girder
Total Length: 1119.0 Feet
Span Length: 101.0 Feet

Overview: Deck plate girder bridge over Green River on BNSF Railway
History: Built 1914
Built: 1914

Location: King County

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464882

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BNSF - Green River Trestle

1915 photo

Photo taken by Asahel Curtis

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Tolt Reservoir Road Bridge

Status:

Location: 47.688855,-121.715328

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Carries Tolt Reservoir Road over South Fork Tolt River
Design: truss/through
Design Details: Through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Through truss bridge over South Fork Tolt River on Tolt Reservoir Road
History:
Built:

Location: King County

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NP - Green River Bridge (3rd)

Status: Replaced by a new bridge

Location: 47.206030,-121.513380

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Carries Northern Pacific Railroad over Green River
Design: truss/pony/warren
Design Details: Warren pony truss
Total Length: 120.0 Feet
Span Length: 120.0 Feet

Overview: Lost Warren pony truss bridge over Green River on Northern Pacific Railroad
History: Built 1897, Replaced 1926 and moved to Lebaum
Built: 1897

Location: King County

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BNSF - Coal Creek Parkway Bridge

Status: Intact but closed to all traffic

Location: 47.569327,-122.180542

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Carries BNSF Railway over Coal Creek Parkway
Design: girder/deck/plate
Design Details: Deck plate girder
Total Length: 43.0 Feet
Span Length: 43.0 Feet

Overview: Deck plate girder bridge over Coal Creek Parkway on BNSF Railway
History: Built 1916
Built: 1916

Location: King County

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BNSF - Sammamish River Bridge

Status: Open to traffic

Location: 47.753717,-122.167835

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Carries BNSF Railway over Sammamish River
Design: girder/pony/plate
Design Details: Pony plate girder
Total Length: 146.0 Feet
Span Length: 70.0 Feet

Overview: Pony/through plate girder bridge over Sammamish River on BNSF Railway
History: Built 1914 using a secondhand girder, Approached Added 1929
Built: 1914

Location: King County

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BNSF - Green River Bridge #2

Status: Open to traffic

Location: 47.209590,-121.481363

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Carries BNSF Railway over Green River
Design: truss/through/warren
Design Details: Warren through truss
Total Length: 134.0 Feet
Span Length: 130.0 Feet

Overview: Warren through truss bridge over Green River on BNSF Railway
History: Built 1914
Built: 1914

Location: King County

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BNSF - Rock Creek Bridge

Status: Open to traffic

Location: 47.203493,-121.532244

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Carries BNSF Railway over Rock Creek
Design: girder/pony/plate
Design Details: Pony plate girder
Total Length: 50.0 Feet
Span Length: 50.0 Feet

Overview: Pony/through plate girder bridge over Rock Creek on BNSF Railway
History: Built 1915
Built: 1915

Location: King County

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BNSF - Green River Bridge #4

Status: Open to traffic

Location: 47.220987,-121.595603

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Carries BNSF Railway over Green River
Design: truss/through/pratt
Design Details: Pratt through truss
Total Length: 130.0 Feet
Span Length: 120.0 Feet

Overview: Pratt through truss bridge over Green River on BNSF Railway
History: Built 1898
Built: 1898

Location: King County

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BNSF - Green River Bridge #5

Status: Open to traffic

Location: 47.242812,-121.728141

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Carries BNSF Railway over Green River
Design: truss/through/warren
Design Details: Warren through truss
Total Length: 334.0 Feet
Span Length: 100.0 Feet

Overview: Warren through truss bridge over Green River on BNSF Railway
History: Built 1958 during construction of Hanson Reservoir
Built: 1958

Location: King County

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Joe Desimone Bridge

Status: Open to pedestrians only

Location: 47.609621,-122.342553

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Carries over Western Avenue
Design: unknown
Design Details:
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Bridge over Western Avenue
History: Built 1924
Built: 1924

Location: King County

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469465

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Looking North

Photo taken by Mike Garland in November 2017

469466

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Looking North

Photo taken by Mike Garland in November 2017

469467

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Looking North

Photo taken by Mike Garland in November 2017

469468

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Looking North

Photo taken by Mike Garland in November 2017

469999

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West Entrance

Photo taken by Mike Garland in December 2017

469997

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West Entrance

Photo taken by Mike Garland in December 2017

469998

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West Entrance

Photo taken by Mike Garland in December 2017

469995

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Photo taken by Mike Garland in December 2017

469996

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Photo taken by Mike Garland in December 2017

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NE Cascade Highway Bridge

Status: Replaced by a new bridge

Location: 47.730130,-121.408802

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Carries NE Old Cascade Highway over South Fork Skykomish River
Design: truss/through
Design Details: Through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Lost Through truss bridge over South Fork Skykomish River on NE Old Cascade Highway
History:
Built:

Location: King County

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472877

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NE Cascade Highway Bridge

Photo from old postcard

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West Seattle Bridge

Status: Closed due to serious cracking in March 2020. Expected to remain closed until at least 2022.
The West Seattle Bridge & associated expressway was closed to all traffic indefinitely in March 2020 after a routine inspection discovered serious cracking in the concrete. Further inspection determined that the bridge was significantly unstable and needed additional support before any repairs could begin. Repairs are not expected to be completed until at least 2022.

Location: 47.571040,-122.353157

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Carries West Seattle Expressway/Spokane Street Bypass over Duwamish Waterway & Industrial Flats
Design: girder/deck/concrete
Design Details: Cantilevered segmental concrete box girder
Total Length: 2607.0 Feet
Span Length: 589.9 Feet

Overview: Concrete deck girder bridge over Duwamish Waterway & Industrial Flats on West Seattle Expressway/Spokane Street Bypass
History: Built 1984; Closed due to cracking 2020; Expected to reopen at some point in 2022
Built: 1984

Location: King County

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476589

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West Seattle Bridge

View of empty bridge after March 2020 closure

Photo taken by Wikimedia Commons user SounderBruce in April 2020

476590

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West Seattle Bridge

Distant elevation of bridge with Mount Rainer in background

Photo taken by Joe Mabel at Wikimedia Commons in August 2007

476591

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West Seattle Bridge

View beside the bridge from Spokane Street Viaduct approach

Photo taken by Joe Mabel at Wikimedia Commons in August 2007

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Landsburg Bridge

Status: Replaced by a new bridge

Location: 47.374809,-121.971502

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Carries Landsburg Road over Cedar River
Design: truss/pony
Design Details: Pony truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Lost Pony truss bridge over Cedar River on Landsburg Road
History:
Built:

Location: King County

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477199

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Landsburg Bridge

1932 view

Photo from blackdiamondnow

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Carr Bridge

Status: Replaced by a new bridge

Location: 47.439778,-122.064079

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Carries Cedar Grove Road over Cedar River
Design: truss/through
Design Details: Through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Lost Through truss bridge over Cedar River on Cedar Grove Road
History:
Built:

Location: King County

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477256

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Carr Bridge

July 1932 view

Photo from King County Archives

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Lander Street Footbridge

Status: Removed but not replaced

Location: 47.579782,-122.336953

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Carries Path ay Lander Street over Rail yard
Design: truss/through
Design Details: Through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Lost Through truss bridge over Rail yard on Path ay Lander Street
History: Built 1915
Built: 1915

Location: King County

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480588

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Lander Street Footbridge

1915 view

Photo from Seattle Municipal Archive

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Juneau Street Footbridge

Status: Removed but not replaced

Location: 47.549510,-122.315556

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Carries Path at Juneau Street over Great Northern RR
Design: truss/deck
Design Details: Deck truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Lost Deck truss bridge over Great Northern RR on Path at Juneau Street
History: Built 1915
Built: 1915

Location: King County

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480589

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Juneau Street Footbridge

1915 view

Photo from Seattle Municipal Archive

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Snoqualmie Valley Trail - Griffin Creek Bridge

Status: Open to pedestrians only

Location: 47.615768,-121.904140

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Carries Snoqualmie Valley Trail over Griffin Creek
Design: unknown
Design Details:
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Bridge over Griffin Creek on Snoqualmie Valley Trail
History:
Built:

Location: King County

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Alaskan Way Tunnel

Status: Open to traffic

Location: 47.601270,-122.335900

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Carries WA 99 over
Design: tunnel
Design Details: Tunnel
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Tunnel on WA 99
History: Built 2019
Built: 2019

Location: King County

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Ballard Swing Bridge (Old)

Status: Replaced by a new bridge

Location: 47.660042,-122.373340

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Carries 14 Avenue over Lake Washington Canal
Design: truss/through/howe
Design Details: Howe through truss swing
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Lost Howe through truss bridge over Lake Washington Canal on 14 Avenue
History: Built in 1910; replaced in 1916
Built: 1910

Location: King County

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488568

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Photo taken by Priscilla Long

488668

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Tech Drawing From Douglas Butler

Photo taken by Douglas Butler in January 2020

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Cherry Valley Drawbridge

Status: No longer exists

Location: 47.774632,-121.966126

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Carries over Snoqualmine River
Design: truss/through/howe
Design Details: Howe through truss swing
Total Length: 0.0 Feet
Span Length: 0.0 Feet

Overview: Lost Howe through truss bridge over Snoqualmine River
History:
Built:

Location: King County

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488832

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Photo taken by Kat Marshello

488833

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Tech drawing from Douglas Butler

Photo taken by Douglas Butler in January 2020


Special Bridge Conditions Legend: R - Former location of relocated bridge. ! - At risk for demolition or destruction. X - Confirmed demolished or collapsed. S  - Dismantled and/or in storage. L -  Severe loss of historic integrity due to alteration.

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