SW MICHIGAN ST over WETLAND MIT. CHANNEL (Route: 99)
Num:0014459C0000000x
Open: no restriction [A]
Built: 1996, Reconstructed: N/A [0000]
Historic: Historical significance is not determinable at this time. [4]

Google Streetview (If Available)

Rough Distance: 0.1 Miles (0.2 Kilometers)

Bridge Type
Main Span(s): Concrete [1] Slab [01]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]

Bridge Dimensions
Length: 19.5 m = 64.0 ft
Main Spans: 1 at 19.5 m = 64.0 ft
Approach Spans: 0
Skew: 99
Width, Roadway: 11 m = 36.1 ft (2 Lanes) and Out-To-Out: 11.7 m = 38.4 ft for a 11 m = 36.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
Unknown [00000]: King County [033], Washington [53]
Owned by State Highway Agency [01], DOT District: 1
UNDER S APPR 99/530

Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 22.5 / HS 25 or greater [9]
Operating: 53.5 metric ton = 58.9 tons (Load Factor(LF) [1])
Inventory: 31.7 metric ton = 34.9 tons (Load Factor(LF) [1])

Appraisal
Structural: Better than present minimum criteria [7]
Deck Geometry: Better than present minimum criteria [7]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: September 1999 [999] and Frequency: 24

Future Work
Work Needed: Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Bridge Detour: 0.2 km = 0.1 mi
Traffic
ADT: 515 (2002) and Trucks: 5%
Future ADT: 690 (In 2036 )

N-E RAMP over OCCIDENTAL AVE S (Route: 99)
Num:0014962A0000000x
Open: no restriction [A]
Built: 1998, Reconstructed: N/A [0000]
Historic: Historical significance is not determinable at this time. [4]

Google Streetview (If Available)

Rough Distance: 0.1 Miles (0.2 Kilometers)

Bridge Type
Main Span(s): Concrete continuous [2] Box beam or girders - Multiple [05]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]

Bridge Dimensions
Length: 151.8 m = 498.1 ft
Main Spans: 5 at 32 m = 105.0 ft
Approach Spans: 0
Skew: 3
Width, Roadway: 7.9 m = 25.9 ft (1 Lanes) and Out-To-Out: 8.8 m = 28.9 ft for a 8.5 m = 27.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
Unknown [00000]: King County [033], Washington [53]
Owned by State Highway Agency [01], DOT District: 1
0.4 N JCT SR 509

Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 22.5 / HS 25 or greater [9]
Operating: 57.1 metric ton = 62.8 tons (Load Factor(LF) [1])
Inventory: 33.6 metric ton = 37.0 tons (Load Factor(LF) [1])

Appraisal
Structural: Better than present minimum criteria [7]
Deck Geometry: Equal to present desirable criteria [8]
Road Alignment: Equal to present desirable criteria [8]
Waterway: N/A [N] and Bridge not over waterway. [N]
Inspections
Date: April 2018 [0418] and Frequency: 24

Future Work
Work Needed: Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Bridge Detour: 0.2 km = 0.1 mi
Traffic
ADT: 19172 (2019) and Trucks: 5%
Future ADT: 27070 (In 2039 )

SR 99 W-S RAMP over BNRR: CITY STREET (Route: 99)
Num:0014459B0000000x
Open: no restriction [A]
Built: 1996, Reconstructed: N/A [0000]
Historic: Historical significance is not determinable at this time. [4]

Google Streetview (If Available)

Rough Distance: 0.2 Miles (0.3 Kilometers)

Bridge Type
Main Span(s): Prestressed concrete continuous [6] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]

Bridge Dimensions
Length: 123.4 m = 404.9 ft
Main Spans: 3 at 41.1 m = 134.8 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 6.7 m = 22.0 ft (1 Lanes) and Out-To-Out: 7.7 m = 25.3 ft for a 7.3 m = 24.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
Unknown [00000]: King County [033], Washington [53]
Owned by State Highway Agency [01], DOT District: 1
0.4 N JCT SR 509

Condition
Deck: Good [7]
Superstructure: Satisfactory [6]
Substructure: Good [7]
Loading
Design: MS 22.5 / HS 25 or greater [9]
Operating: 89.8 metric ton = 98.8 tons (Load Factor(LF) [1])
Inventory: 56.2 metric ton = 61.8 tons (Load Factor(LF) [1])

Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Equal to present minimum criteria [6]
Road Alignment: Equal to present minimum criteria [6]
Waterway: N/A [N] and Bridge not over waterway. [N]
Inspections
Date: May 2020 [0520] and Frequency: 24

Future Work
Work Needed: Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Bridge Detour: 0.8 km = 0.5 mi
Traffic
ADT: 19502 (2019) and Trucks: 5%
Future ADT: 27536 (In 2039 )

SR 99 over DUWAMISH RIVER (Route: 99)
Num:0014459A0000000x
Open: no restriction [A]
Built: 1996, Reconstructed: N/A [0000]
Historic: Historical significance is not determinable at this time. [4]

Google Streetview (If Available)

Rough Distance: 0.3 Miles (0.4 Kilometers)

Bridge Type
Main Span(s): Steel [3] Movable - Bascule [16]
Approach Span(s): Concrete continuous [2] Stringer/Multi-beam or girder [02]
Deck: Closed Grating [4] with Wearing Surface: Latex Concrete or similar additive [3]

Bridge Dimensions
Length: 882.4 m = 2895.2 ft
Main Spans: 1 at 89.6 m = 294.0 ft
Approach Spans: 22
Skew: 0
Width, Roadway: 13.4 m = 44.0 ft (3 Lanes) and Out-To-Out: 17.6 m = 57.7 ft for a 13.1 m = 43.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 8.2 m = 26.9 ft

Location
Unknown [00000]: King County [033], Washington [53]
Owned by State Highway Agency [01], DOT District: 1
0.1 N JCT SR 509

Condition
Deck: Satisfactory [6]
Superstructure: Good [7]
Substructure: Poor [4]
Loading
Design: MS 22.5 / HS 25 or greater [9]
Operating: 51.7 metric ton = 56.9 tons (Load Factor(LF) [1])
Inventory: 30.8 metric ton = 33.9 tons (Load Factor(LF) [1])

Appraisal
Structural: Meets minimum tolerable limits to be left in place as is [4]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: September 2020 [0920] and Frequency: 24

Future Work
Work Needed: Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Bridge Detour: 0.8 km = 0.5 mi
Traffic
ADT: 49293 (2019) and Trucks: 8%
Future ADT: 69601 (In 2039 )

SR 99 over DUWAMISH RIVER (Route: 99)
Num:0004872A0000000x
Open: no restriction [A]
Built: 1956, Reconstructed: 1998
Historic: Bridge is on the NRHP. [1]

Google Streetview (If Available)

Rough Distance: 0.3 Miles (0.5 Kilometers)

Bridge Type
Main Span(s): Steel [3] Movable - Bascule [16]
Approach Span(s): Concrete continuous [2] Stringer/Multi-beam or girder [02]
Deck: Open Grating [3] with Wearing Surface:

Bridge Dimensions
Length: 917.4 m = 3010.0 ft
Main Spans: 1 at 84.4 m = 276.9 ft
Approach Spans: 23
Skew: 0
Width, Roadway: 13.4 m = 44.0 ft (3 Lanes) and Out-To-Out: 17.7 m = 58.1 ft for a 18 m = 59.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 12.5 m = 41.0 ft

Location
Unknown [00000]: King County [033], Washington [53]
Owned by State Highway Agency [01], DOT District: 1
0.1 N JCT SR 509

Condition
Deck: Fair [5]
Superstructure: Satisfactory [6]
Substructure: Satisfactory [6]
Loading
Design: MS 18+Mod / HS 20+Mod [6]
Operating: 41.7 metric ton = 45.9 tons (Load Factor(LF) [1])
Inventory: 25.4 metric ton = 27.9 tons (Load Factor(LF) [1])

Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: September 2020 [0920] and Frequency: 24

Future Work
Work Needed: Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Bridge Detour: 0.8 km = 0.5 mi
Traffic
ADT: 51317 (2019) and Trucks: 9%
Future ADT: 72459 (In 2039 )