Status: Open to traffic
Location: 35.123889,-120.575833
Carries Mason Street over Arroyo Grande Creek
Design: arch/deck/open
Design Details: Open spandrel concrete arch
Total Length: 168.0 Feet
Span Length: 120.1 Feet
Overview: Open spandrel concrete arch bridge over Arroyo Grande Creek on Mason Street in Arroyo Grande
History: Built 1926
Built: 1926
Location: San Luis Obispo County
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252171
Looking east from below
The area is too overgrown to get a clear view of the bridge...
Photo taken by Jann Mayer in March 2013
252172
South end, from the east
Photo taken by Jann Mayer in March 2013
252173
Looking south
Photo taken by Jann Mayer in March 2013
252174
Looking south along bridge
Photo taken by Jann Mayer in March 2013
252175
Looking north
Photo taken by Jann Mayer in March 2013
Status: Open to traffic
Location: 35.499029,-120.663858
Carries Via Avenue over Atascadero Creek
Design: truss/deck
Design Details: Deck truss
Total Length: 77.1 Feet
Span Length: 62.0 Feet
Overview: Deck truss bridge over Atascadero Creek on Via Avenue in Atascadero
History: Built 1948
Built: 1948
Location: San Luis Obispo County
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Status: Open to traffic
Location: 35.400363,-120.866180
Carries Beachcomber Drive over Beach Creek
Design: arch/deck
Design Details: Arch
Total Length: 62.0 Feet
Span Length: 60.0 Feet
Overview: Concrete arch bridge over Beach Creek on Beachcomber Drive in Morro Bay
History: Built 1925
Built: 1925
Location: San Luis Obispo County
View Bridge Information In Wayback Machine
Status: Open for traffic
Location: 35.131944,-120.542778
Carries Branch Mill Road over Tar Springs Creek
Design: truss/deck/double-warren
Design Details: Bailey deck truss with three truwss beams running the length of the bridge
Total Length: 91.9 Feet
Span Length: 38.1 Feet
Overview: Pre-fab modular steel panel deck truss bridge over Tar Springs Creek on Branch Mill Road
History: Built 1949
Built: 1949
Location: San Luis Obispo County
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252176
Looking north
Photo taken by Jann Mayer in March 2013
252177
Looking north
There is significant scouring under the piers
Photo taken by Jann Mayer in March 2013
252178
Truss detail under south end
There are three beams running the length of the bridge
Photo taken by Jann Mayer in March 2013
252179
Looking south
Photo taken by Jann Mayer in March 2013
Status: Open to traffic
Rehabilitated
Location: 35.121944,-120.577778
Carries Bridge Street over Arroyo Grande Creek
Design: truss/pony/pratt
Design Details: Pratt pony truss
Total Length: 129.9 Feet
Span Length: 100.1 Feet
Overview: Pratt Pony truss bridge over Arroyo Grande Creek on Bridge Street in Arroyo Grande
History: Built 1908 Rehabilitated 2021
Built: 1908
Location: San Luis Obispo County
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252398
Looking south
Photo taken by Jann Mayer in March 2013
252399
Contractors information on northwest corner
Photo taken by Jann Mayer in March 2013
252400
Joint details
Drip irrigatuion lines are running through the beams
Photo taken by Jann Mayer in March 2013
252401
West sidewalk and railing
Photo taken by Jann Mayer in March 2013
252402
County supervisors plate
On southeast corner
Photo taken by Jann Mayer in March 2013
252403
Carnegie marking still visible on some beams
Photo taken by Jann Mayer in March 2013
252404
Carnegie marking
Photo taken by Jann Mayer in March 2013
252405
Joint details
Photo taken by Jann Mayer in March 2013
252406
Evidence of damage to tension member
This has been bent for some time, as the steel plate on the sidewalk was cut to account for it.
Photo taken by Jann Mayer in March 2013
252407
Joint details
Photo taken by Jann Mayer in March 2013
252408
Support structure added to bottom
The structure is a welded steel truss
Photo taken by Jann Mayer in March 2013
252409
Looking south acros the bridge
Photo taken by Jann Mayer in March 2013
252410
View from the west with support structure visible
Photo taken by Jann Mayer in March 2013
252411
North abutment
Photo taken by Jann Mayer in March 2013
256068
100 year anniversary celebration of bridge in 2008
100 year anniversary celebration of bridge in 2008.
Arroyo Grande by Jean Hubbard and Gary Hoving
256069
Arroyo Grande Bridge
Arroyo Grande Bridge in 1920
Arroyo Grande by Jean Hubbard and Gary Hoving
309356
Looking Northbound of Bridge Street Bridge in 1985
Photo taken by Caltrans in 1985
309357
From south at Bridge Street Bridge in 1985
Photo taken by Caltrans in 1985
415339
Bridge Street Bridge
Photo taken by Christopher Finigan in June 2017
415340
Lattice railing
Photo taken by Christopher Finigan in June 2017
415341
Eyebar connection
Photo taken by Christopher Finigan in June 2017
415342
Webbing detail
Photo taken by Christopher Finigan in June 2017
415343
Photo taken by Christopher Finigan in June 2017
415344
Eyebar joint connections
Photo taken by Christopher Finigan in June 2017
415345
Photo taken by Christopher Finigan in June 2017
415346
Builder's plaque
Photo taken by Christopher Finigan in June 2017
Status: Open to traffic
Location: 35.492914,-120.665125
Carries West Mall over Atascadero Creek
Design: arch/deck/closed
Design Details: Closed spandrel concrete deck arch
Total Length: 60.0 Feet
Span Length: 54.1 Feet
Overview: Concrete arch bridge over Atascadero Creek on West Mall in Atascadero
History: Built 1921; rehabilitated 1955
Built: 1921
Location: San Luis Obispo County
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163204
West Mall Bridge
Looking NE at West face
Photo taken by Craig Philpott in April 2010
163205
West Mall Bridge
Looking NE at West face
Photo taken by Craig Philpott in April 2010
163206
West Mall Bridge
Photo taken by Craig Philpott in April 2010
163207
West Mall Bridge
Photo taken by Craig Philpott in April 2010
163208
West Mall Bridge
Looking NE
Photo taken by Craig Philpott in April 2010
309358
Looking North in 2006
Photo taken by Caltrans in 2006
309359
From Atascadero Creek in 2006
Photo taken by Caltrans in 2006
Status: Open to traffic one-way southbound only
Location: 35.136944,-120.638889
Carries Cypress Street over Pismo Creek
Design: beam/stringer/wood
Design Details: Timber stringer
Total Length: 130.9 Feet
Span Length: 19.0 Feet
Overview: Wooden bridge over Pismo Creek on Cypress Street in Pismo Beach
History: Built 1913
Built: 1913
Location: San Luis Obispo County
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 35.577852,-120.834906
Carries Dover Canyon Road over Jack Creek
Design: truss/pony
Design Details: Pony truss
Total Length: 63.0 Feet
Span Length: 60.0 Feet
Overview: Pony truss bridge over Jack Creek on Dover Canyon Road
History: Built 1920
Built: 1920
Location: San Luis Obispo County
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 35.487774,-120.667118
Carries El Camino Real over Atascadero Creek
Design: arch/deck
Design Details: Arch
Total Length: 82.0 Feet
Span Length: 80.1 Feet
Overview: Concrete arch bridge over Atascadero Creek on El Camino Real in Atascadero
History: Built 1915; rehabilitated 1970
Built: 1915
Location: San Luis Obispo County
View Bridge Information In Wayback Machine
Status: Open to traffic
Originally determined ineligible in the 2005 Caltrans Historic Bridge Inventory. It was determined eligible in, "Determination of Eligibility for the River Grove Drive Bridge Rehabilitation Project", by Caltrans in April 2013. Rehabilitation scheduled for summer 2019.
Location: 35.652778,-120.506944
Carries River Grove Drive over Estrella River
Design: truss/through/parker
Design Details: Pin-connected Parker Through truss
Total Length: 160.1 Feet
Span Length: 153.9 Feet
Overview: Parker Through truss bridge over Estrella River on Grove Drive
History: Built 1910; rehabilitated 1990
Built: 1910
Location: San Luis Obispo County
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204883
Estrella River Bridge
Photo taken by Craig Philpott
204884
Estrella River Bridge
Photo taken by Craig Philpott
204885
Estrella River Bridge
Photo taken by Craig Philpott
204886
Estrella River Bridge
Photo taken by Craig Philpott
204887
Estrella River Bridge
Photo taken by Craig Philpott
204888
Estrella River Bridge
Photo taken by Craig Philpott
204889
Estrella River Bridge
Photo taken by Craig Philpott
204890
Estrella River Bridge
Photo taken by Craig Philpott
204891
Estrella River Bridge
Photo taken by Craig Philpott
204892
Estrella River Bridge
Photo taken by Craig Philpott
309361
From Estrella River
Photo taken by Caltrans in 2013
309362
Eastbound view
Photo taken by Caltrans in 2013
Status: Closed to vehicles, roadway has been realigned with new bridge
Determined eligible by the Keeper of the National Register in the Caltrans 1985 Historic Metal Truss Bridges in California Thematic Resources study; its continued eligibility was confirmed in the 2004 Caltrans Historic Bridge Inventory update.
Location: 35.348920,-120.513113
Carries Las Pilitas Road over Salinas River
Design: truss/through/camelback
Design Details: Pin-connected, 9-panel Camelback Pratt through truss
Total Length: 231.0 Feet
Span Length: 149.9 Feet
Overview: Through truss bridge over Salinas River on Las Pilitas Road
History: Built 1917
Built: 1917
Location: San Luis Obispo County
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235471
Oblique view of the east portal
Photo taken 2006 May 23 by Kirby James, used with permission
235472
View along the whole span, facing west
Sign on the portal reads: History Bridge Rinconada Las Pilitas Br 1917
Photo taken 2006 May 23 by Kirby James, used with permission
235473
Upper bracing, facing east.
A prominent feature are the V-laced lateral braces.
Photo taken 2006 May 23 by Kirby James, used with permission
235474
Detail of upper braces.
The sway braces are built from angle, the lateral braces that typically are tension rods, are built-up beam with tight V-lancing. Maybe 45 degree?
Photo taken 2006 May 23 by Kirby James, used with permission
235475
Side view, facing south
This photo probably taken from on the new bridge.
Photo taken 2006 May 23 by Kirby James, used with permission
309363
Looking North in 1985
Photo taken by Caltrans in 1985
309364
Looking from Salinas River in 1985
Photo taken by Caltrans in 1985
Status: Open to traffic
Location: 35.243041,-120.681166
Carries Los Oso Valley Road over San Luis Obispo Creek
Design: arch/deck/steel
Design Details: Steel arch
Total Length: 122.1 Feet
Span Length: 38.1 Feet
Overview: Steel arch bridge over San Luis Obispo Creek on Los Oso Valley Road in San Luis Obispo
History: Built 1987
Built: 1987
Location: San Luis Obispo County
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Status: Replace by a new bridge
Location: 35.473889,-120.912778
Carries Picachio Road over Cayucos Creek
Design: truss/pony/kingpost
Design Details: Wooden Kingpost pony truss
Total Length: 60.0 Feet
Span Length: 42.0 Feet
Overview: Kingpost pony truss bridge over Cayucos Creek on Picachio Road
History: Built 1940, Replaced 2007
Built: 1940
Location: San Luis Obispo County
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150465
Picachio Bridge Elevation (old)
Original structure Elevation taken from the North side of the bridge.
Photo taken by Kevin Pope in March 2006
150466
Picachio Bridge (Old)
Original structure looking west across bridge.
Photo taken by Kevin Pope in March 2006
150467
Picachio Bridge (New)
Replacement structure looking west across bridge.
Photo taken by Kevin Pope in June 2008
150468
Picachio Bridge Elevation (New)
Replacement structure elevation from the south side of the bridge.
Photo taken by Kevin Pope in June 2008
189477
Water line (Orig)
The original water line on the west side of the bridge.
Photo courtesy of TY-Lin International; March 2006
189478
South abutment (Orig)
The south abutment and the erosion damage of the original bridge.
Photo courtesy of TY-Lin International; March 2006
189479
North abutment (Orig)
The north abutment of the original bridge.
Photo courtesy of TY-Lin International; March 2006
Status: Closed to all traffic
Location: 35.142772,-120.633094
Carries Bello Street over Pismo Creek
Design: truss/through/pratt
Design Details: Pratt through truss
Total Length: 125.0 Feet
Span Length: 120.1 Feet
Overview: Through truss bridge over Pismo Creek on Bello Street in Pismo Beach
History: Built 1913
Built: 1913
Location: San Luis Obispo County
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252180
Pismo Crrek Bridge (R), Pismo Creek Railroad Bridge (L)
Photo taken by Jann Mayer in March 2013
252181
Looking north
Photo taken by Jann Mayer in March 2013
252182
South portal
Photo taken by Jann Mayer in March 2013
252183
Looking north
Photo taken by Jann Mayer in March 2013
252184
Rusted through lattice members
Photo taken by Jann Mayer in March 2013
252185
Railing detail
Photo taken by Jann Mayer in March 2013
252186
Looking west along the creek
Photo taken by Jann Mayer in March 2013
252249
Closeup of top connection
Most of the upper members were deteriorated
Photo taken by Jann Mayer in March 2013
252250
"Cambria" is still visible on some members
Photo taken by Jann Mayer in March 2013
252251
Looking south
Photo taken by Jann Mayer in March 2013
252252
Railing on south end
Photo taken by Jann Mayer in March 2013
252253
Underside of bridge
Two of the diagonal tension members on the south end are dangling
Photo taken by Jann Mayer in March 2013
252254
Crumbling concrete on the bottom
Photo taken by Jann Mayer in March 2013
309376
October 18, 2014 Aerial photo
Bello Street Bridge is bottom center.
Photo taken by Dallam Oliver-Lee in October 18, 2014
Status: Open to traffic
Location: 35.508950,-121.023626
Carries Slo-San Simeon Road over Harmony Creek
Design: arch/deck
Design Details: Arch
Total Length: 29.9 Feet
Span Length: 25.9 Feet
Overview: Concrete arch bridge over Harmony Creek on Slo-San Simeon Road
History: Built 1906; rehabilitated 1938
Built: 1906
Location: San Luis Obispo County
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309384
1963 aerial photo looking North
Bridge is on bottom-center right running parallel with the new Highway 1 in Harmony.
Photo taken by California Highways and Public Works in 1963
Status: Open to traffic
Location: 35.289722,-120.666111
Carries CA 1 over Stenner Creek
Design: arch/deck/stone
Design Details: Stone arch
Total Length: 49.9 Feet
Span Length: 49.9 Feet
Overview: Stone arch bridge over Stenner Creek on CA 1 in San Luis Obispo
History: Built 1920; rehabilitated 1968
Built: 1920
Location: San Luis Obispo County
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Status: Open to traffic
Location: 35.283920,-120.668121
Carries Broad Street over Stenner Creek
Design: arch/deck
Design Details: Arch
Total Length: 56.1 Feet
Span Length: 54.1 Feet
Overview: Concrete arch bridge over Stenner Creek on Broad Street in San Luis Obispo
History: Built 1909; rehabilitated 1953
Built: 1909
Location: San Luis Obispo County
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252395
Looking west
Photo taken by Jann Mayer in March 2013
252396
View from north bank
Photo taken by Jann Mayer in March 2013
252397
View from north bank
Photo taken by Jann Mayer in March 2013
Status: Open to traffic
Location: 35.489592,-120.665488
Carries Lewis Avenue over Atascadero Creek
Design: arch/through/steel
Design Details: Bowstring steel tied through arch
Total Length: 157.0 Feet
Span Length: 0.0 Feet
Overview: Steel through arch bridge over Atascadero Creek on Lewis Avenue
History: Built 2007
Built: 2007
Location: San Luis Obispo County
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163197
Lewis Ave, Atascadero
Looking SE
Photo taken by Craig Philpott in April 2010
163198
Lewis Ave, Atascadero
Looking North
Photo taken by Craig Philpott in April 2010
163199
Lewis Ave, Atascadero
Looking North
Photo taken by Craig Philpott in April 2010
163200
Lewis Ave, Atascadero
Looking South
Photo taken by Craig Philpott in April 2010
163201
Lewis Ave, Atascadero
Plaque
Photo taken by Craig Philpott in April 2010
163202
Lewis Ave, Atascadero
Looking South
Photo taken by Craig Philpott in April 2010
163203
Lewis Ave, Atascadero
Looking South
Photo taken by Craig Philpott in April 2010
Status: Open to traffic
Location: 35.021996,-120.321081
Carries State Route 166 over Huasna River
Design: beam/stringer/steel
Design Details: Steel stringer
Total Length: 1569.0 Feet
Span Length: 173.9 Feet
Overview: Steel stringer bridge over Huasna River on State Route 166
History: Built 1959
Built: 1959
Location: San Luis Obispo County
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163209
Huasna River, San Luis Obispo
Looking NW, showing earthquake cable restraints
Photo taken by Craig Philpott in April 2010
163210
Huasna River, San Luis Obispo
Photo taken by Craig Philpott in April 2010
163211
Huasna River, San Luis Obispo
Looking NW
Photo taken by Craig Philpott in April 2010
163212
Huasna River, San Luis Obispo
Looking NW
Photo taken by Craig Philpott in April 2010
163213
Huasna River, San Luis Obispo
Looking NW
Photo taken by Craig Philpott in April 2010
309366
Huasna River Bridge under construction in 1959
Photo taken by California Highways and Public Works in 1959
309367
Huasna River Bridge under construction in 1959
Photo taken by California Highways and Public Works in 1959
Status: Replaced by new bridge
Location: 35.581538,-121.118778
Carries Moonstone Beach Drive over Leffingwell Creek
Design: slab
Design Details: 8-Span reinforced concrete flat slab on steel stringers and reinforced concrete columns.
Total Length: 268.0 Feet
Span Length: 0.0 Feet
Overview: Lost Slab bridge over Leffingwell Creek on Moonstone Beach Drive
History: Built 1932; replaced 2009
Built: 1932
Location: San Luis Obispo County
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189437
West Elevation (Orig)
West elevation of the bridge looking southeast.
Photo provided by TY-Lin International
189438
Curb Marker (Orig)
Date marker in the curb of the original bridge.
Photo provided by TY-Lin International
189439
Bridge and Boat Ramp (Orig)
The original bridge and boat ramp looking northeast.
Photo provided by TY-Lin International
189440
Bridge Superstructure (Orig)
Closer view of the bridge superstructure looking northeast.
Photo provided by TY-Lin International
189441
Bridge Deck N (Orig)
Looking south along the bridge deck.
Photo provided by TY-Lin International
189442
Bridge Deck S (Orig)
Looking north along the bridge deck.
Photo provided by TY-Lin International
189443
Utility damage (Orig)
A picture of the damaged utility lines under the bridge.
Photo provided by TY-Lin International
189468
West Elevation View (Orig)
A cleaner shot of the west elevation of the original bridge.
Photo courtesy of TY-Lin International
189469
Abutment & Wing Wall (Orig)
A picture of part of the original abutment and inlaid brick wing walls.
Photo courtesy of TY-Lin International
189470
Wing wall (Orig)
A better picture of one of the brinck wing walls on the original bridge.
Photo courtesy of TY-Lin International
189471
West elevation during construction (New)
West elevation of the replacement bridge during construction; Feb 2009.
Photo courtesy of TY-Lin International
189472
Superstructure during construction (New)
Superstructure being formed during construction; Feb 2009.
Photo courtesy of TY-Lin International
189473
West elevation (New)
West elevation of the finished replacement bridge.
Photo courtesy of TY-Lin International
189474
Elevation and boat ramp (New)
The new boat ramp, retaining wall, and bridge looking NE.
Photo courtesy of TY-Lin International
189475
Entry monument and label (New)
Typical entry monument at the abutment and the bridge number on the barrier of the new bridge.
Photo courtesy of TY-Lin International
189476
Bridge piers (New)
Close up of the soffit and piers of the new bridge.
Photo courtesy of TY-Lin International
Status: Open to traffic
Location: 35.280840,-120.659195
Carries Marsh Street over San Luis Obispo Creek
Design: beam/tee
Design Details: Concrete tee beam
Total Length: 46.9 Feet
Span Length: 44.0 Feet
Overview: Concrete tee beam bridge over San Luis Obispo Creek on Marsh Street
History: Built 1909
Built: 1909
Location: San Luis Obispo County
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309355
Eastside of Marsh Street Bridge looking North
Photo taken by Caltrans in 1986
Status: Open to traffic
Location: 35.142959,-120.632705
Carries Union Pacific Railroad (formerly SP RR) over Pismo Creek
Design: truss/through/warren/verticals
Design Details: Warren through truss with all verticals
Total Length: 150.0 Feet
Span Length: 0.0 Feet
Overview: Warren through truss with all verticals bridge over Pismo Creek on Union Pacific Railroad (formerly SP RR)
History: Built 1909
Built: 1909
Location: San Luis Obispo County
View Bridge Information In Wayback Machine
252457
View from the north
Photo taken by Jann Mayer in March 2013
252458
Looking north
The guardrails are new and do not show up in the satelite photo
Photo taken by Jann Mayer in March 2013
252459
Looking north
No builder's plates on this side, but "1909" is visible along the top
Photo taken by Jann Mayer in March 2013
252460
Looking north
"1909" cut in the cross piece
Photo taken by Jann Mayer in March 2013
252461
Joint detail
The verticals are much smaller than the diagonal members.
Photo taken by Jann Mayer in March 2013
252462
Looking south along the bottom
Photo taken by Jann Mayer in March 2013
252463
North footing
Photo taken by Jann Mayer in March 2013
252464
Remnants of builder's plate on north side
Photo taken by Jann Mayer in March 2013
252465
Bottom stringer details - looking south
Photo taken by Jann Mayer in March 2013
252466
North end of bridge
Photo taken by Jann Mayer in March 2013
252467
Rails, guardrails, and floor detail
Photo taken by Jann Mayer in March 2013
252468
Looking south along bridge
Photo taken by Jann Mayer in March 2013
252469
Bottom joint details
Note the diagonal (painted) is much heavier than the vertical on the left side
Photo taken by Jann Mayer in March 2013
252470
Looking north along span
Photo taken by Jann Mayer in March 2013
252471
End of the guardrails
A tie plate is used to protect the rail edges
Photo taken by Jann Mayer in March 2013
309377
October 18, 2014 Aerial photo
Union Pacific Bridge in bottom center.
Photo taken by Dallam Oliver-Lee in October 18, 2014
Status: Open to traffic
Location: 35.319616,-120.680502
Carries Union Pacific Railroad/Amtrak over Stenner Creek/Stenner Creek Road
Design: girder/deck/plate
Design Details: Deck plate girder
Total Length: 930.0 Feet
Span Length: 0.0 Feet
Overview: Deck plate girder bridge over Stenner Creek/Stenner Creek Road on Union Pacific Railroad/Amtrak
History: Built 1894
Built: 1894
Location: San Luis Obispo County
View Bridge Information In Wayback Machine
239662
Looking north from Stenner Creek Road
The bridge was in need of new paint. This was shortly after Union Pacific acquired the bridge though the merger with Southern Pacific.
Photo taken by Jann Mayer in March 1999
239698
View from Bishop's Peak
View from Bishop's Peak. The northbound Coast Starlight has just crossed the bridge and is headed up Cuesta Grade.
Photo taken by Jann Mayer in June 2001
239745
View from the Coast Starlight
After crossing the bridge, the northbound trains go around Horseshoe Curve and start up Cuesta Grade, giving a great view of the bridge a few minutes after crossing it.
Photo taken by Jann Mayer in September 2003
465452
UP - Stenner Creek Trestle
looking northeast in 1950s
Southern Pacific publicity photo
498256
Photo taken by Tyler 2021
498257
Photo taken by Tyler 2021
498258
Photo taken by Tyler 2021
Status: Open to traffic
Location: 35.272485,-120.670795
Carries Bianchi Lane over San Luis Obispo Creek
Design: girder
Design Details: Girder with timber deck, asphalt wearing surface
Total Length: 64.0 Feet
Span Length: 62.0 Feet
Overview: Girder bridge over San Luis Obispo Creek on Bianchi Lane
History: Built 1905 by the Judson Manufacturing Company
Built: 1905
Location: San Luis Obispo County
View Bridge Information In Wayback Machine
252420
Looking east
Photo taken by Jann Mayer in March 2013
252421
Contractor and Builder's plate
F. C. Mitchell
Photo taken by Jann Mayer in March 2013
252422
Manufacturer's plate
Judson Manufacturing company, San Francisco George Story, Engineer
Photo taken by Jann Mayer in March 2013
252423
The railing appears to have been added at a later date
Photo taken by Jann Mayer in March 2013
252424
Looking west
Photo taken by Jann Mayer in March 2013
252425
West abutment
Photo taken by Jann Mayer in March 2013
252426
West abutment
Photo taken by Jann Mayer in March 2013
252427
The bridge has a wooden deck over the steel girders
Photo taken by Jann Mayer in March 2013
252428
Closeup of bottom
Brack appears to have held diagonal tension members, removed at some point.
Photo taken by Jann Mayer in March 2013
252429
Joint between two of the bridge sections
The bridge appears to have been built in three sections and assembled onsite
Photo taken by Jann Mayer in March 2013
Status: Open to traffic
Location: 35.279257,-120.664871
Carries Broad Street over San Luis Obispo Creek
Design: beam/tee
Design Details: Concrete tee beam
Total Length: 40.0 Feet
Span Length: 36.1 Feet
Overview: Concrete tee beam bridge over San Luis Obispo Creek on Broad Street
History: Built 1911
Built: 1911
Location: San Luis Obispo County
View Bridge Information In Wayback Machine
252432
North abutment
Photo taken by Jann Mayer in March 2013
252433
Underside of bridge
Some of the cross members are uneven
Photo taken by Jann Mayer in March 2013
252434
Looking west across the deck
Photo taken by Jann Mayer in March 2013
252435
West side
Photo taken by Jann Mayer in March 2013
252436
West side
The beam does not appear to be attached to the bridge - it supports the walkway on the other side
Photo taken by Jann Mayer in March 2013
252437
Looking west along the creek
Photo taken by Jann Mayer in March 2013
Status: Collapsed. One concrete peir remains.
Location: 35.179131,-120.738067
Carries Pacific Coast Railroad/Avila Beach Drive over San Luis Obispo Creek
Design: truss/through
Design Details: Wooden through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Lost Pratt bhrough truss bridge over San Luis Obispo Creek on Pacific Coast Railway/Avila Beach Drive
History: Built 1883, converted to automobile bridge around 1941, abandoned 1967, collapsed 1981
Built: 1883
Location: San Luis Obispo County
View Bridge Information In Wayback Machine
309352
Looking Northwest
Photo taken by unknown in 1980
309353
Looking at bridge from Avila Beach
Photo taken by unknown in 1980
309360
1900's Photo
Photo taken by unknown in 1900
309369
Partial 1913 photo
Bridge is partially on the right side of photo.
Photo taken by unknown in 1913
Status: Open to pedestrians only
Location: 35.123243,-120.576936
Carries Footpath over Arroyo Grande Creek
Design: suspension/wire
Design Details: Wire/cable suspension
Total Length: 171.0 Feet
Span Length: 171.0 Feet
Overview: Wire suspension bridge over Arroyo Grande Creek on Footpath
History: Built in 1995 to replace a similar bridge (from 1875) that was damaged in a storm
Built: 1995
Location: San Luis Obispo County
View Bridge Information In Wayback Machine
252448
Looking west from Arroyo Grande Creek
Photo taken by Jann Mayer in April 2013
252449
South tower
Photo taken by Jann Mayer in April 2013
252450
Closeup of the suspension cables
Photo taken by Jann Mayer in April 2013
252451
Cables to prevent swaying
Cables run from the center of the bridge to both banks to prevent excessive swaying
Photo taken by Jann Mayer in April 2013
252452
Looking southwest
Photo taken by Jann Mayer in April 2013
252453
Looking southwest
Photo taken by Jann Mayer in April 2013
415330
Arroyo Grande Swinging Bridge
Photo taken by Christopher Finigan in June 2017
415331
Arroyo Grande Swinging Bridge
Photo taken by Christopher Finigan in June 2017
415332
Photo taken by Christopher Finigan in June 2017
415333
Photo taken by Christopher Finigan in June 2017
415334
Arroyo Grande Swinging Bridge
Walking across the deck
Photo taken by Christopher Finigan in June 2017
415335
Arroyo Grande Swinging Bridge
Photo taken by Christopher Finigan in June 2017
415336
Arroyo Grande Swinging Bridge
Main cable/suspender connection
Photo taken by Christopher Finigan in June 2017
415337
Arroyo Grande Swinging Bridge
Photo taken by Christopher Finigan in June 2017
415338
Arroyo Grande Swinging Bridge
Outriggers along the deck
Photo taken by Christopher Finigan in June 2017
Status: Open to traffic
Location: 35.160924,-120.632876
Carries Union Pacifc railroad (Formerly SPRR) over Pismo Creek
Design: truss/through/warren
Design Details: Warren through truss
Total Length: 100.0 Feet
Span Length: 0.0 Feet
Overview: Warren through truss bridge over Pismo Creek on Union Pacifc railroad (Formerly SPRR)
History:
Built:
Location: San Luis Obispo County
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309378
October 18, 2014 Aerial Photo
Union Pacific Bridge over Pismo Creek on the center right.
Photo taken by Dallam Oliver-Lee in October 18, 2014
309379
Viewing North in 1971
Photo taken by unknown in 1971
Status: Open to traffic
Location: 35.095447,-120.608699
Carries Union Pacific Railroad (Formerly SPRR) over Arroyo Grande Creek
Design: girder/pony/plate
Design Details: Pony plate girder
Total Length: 184.0 Feet
Span Length: 92.0 Feet
Overview: Pony/through plate girder bridge over Arroyo Grande Creek on Union Pacific Railroad (Formerly SPRR)
History: Built in 1909 by the American Bridge Company of New York
Built: 1909
Location: San Luis Obispo County
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252472
Looking north
The guardrails are recent and do not show up in the satellite photos.
Photo taken by Jann Mayer in March 2013
252473
Looking north
Photo taken by Jann Mayer in March 2013
252474
South footing
Photo taken by Jann Mayer in March 2013
252475
Builder's plate
Photo taken by Jann Mayer in March 2013
252476
Looking north
Photo taken by Jann Mayer in March 2013
252477
Rivets along top of girder
Photo taken by Jann Mayer in March 2013
252478
Center of bridge - two spans
Photo taken by Jann Mayer in March 2013
252479
Underneath, looking north
Photo taken by Jann Mayer in March 2013
252480
Underneath, looking north
Photo taken by Jann Mayer in March 2013
252481
Footing on the south end
Photo taken by Jann Mayer in March 2013
Status: Open to traffic
Location: 34.976889,-120.567420
Carries UPRR over Santa Maria River
Design: girder/deck/plate
Design Details: Deck plate girder
Total Length: 1285.0 Feet
Span Length: 0.0 Feet
Overview: Deck plate girder bridge over Santa Maria River on UPRR
History: 15 span deck plate girder over Santa Maria River
Built:
Location: San Luis Obispo County
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Status: Open to traffic
Location: 34.996201,-120.570510
Carries UP RR & AMTRAK over CA1
Design: girder/pony/plate
Design Details: Pony plate girder with floor beam system-timber stringer approaches
Total Length: 237.9 Feet
Span Length: 97.1 Feet
Overview: Plate girder crossing CA1
History: 1957 pony plate girder with timber striger approaches
Built: 1957
Location: San Luis Obispo County
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292909
UP-CA1 Overpass
Car pica will remove when others posted. Looking North on CA1
Photo taken by Royce and Bobette Haley in August 2014
292910
UP-CA1 Overpass
Car pica will remove when others posted. Looking North on CA1
Photo taken by Royce and Bobette Haley in August 2014
Status: Open to traffic
Location: 35.291853,-120.649602
Carries Buena Vista Avenue over US 101
Design: beam/stringer/concrete
Design Details: Concrete stringer
Total Length: 140.1 Feet
Span Length: 57.1 Feet
Overview: Concrete beam bridge over US 101 on Buena Vista Avenue
History: Built 1953
Built: 1953
Location: San Luis Obispo County
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309354
1954 of Looking south at Buena Vista Overpass
Photo taken by California Highways and Public Works in 1954
Status: Open to bicycles and pedestrians only
Determined eligible in the 1985 Caltrans Historic Truss Bridges in California Thematic Resources Survey; it has not been re-evaluated since.
Location: 35.408505,-120.567161
Carries Old Highway 58 over Salinas River
Design: truss/through/parker
Design Details: Parker through truss
Total Length: 163.1 Feet
Span Length: 160.1 Feet
Overview: Parker through truss bridge over Salinas River on Old Highway 58
History: Built 1914
Built: 1914
Location: San Luis Obispo County
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309365
Salinas River Bridge in 1968
Photo taken by Caltrans in 1968
439231
SW portal
Photo taken by Daniel in July 2018
439232
NE portal
Photo taken by Daniel in July 2018
439233
from N approach
Photo taken by Daniel in July 2016
439234
from W approach
Photo taken by Daniel in July 2016
439235
SW portal
Photo taken by Daniel in July 2016
Status: Open to traffic
Location: 35.663069,-120.362875
Carries State Route 41/46 over Cholame Creek
Design: beam/tee
Design Details: Concrete tee beam
Total Length: 184.1 Feet
Span Length: 50.9 Feet
Overview: Concrete tee beam bridge over Cholame Creek on State Route 41/46
History: Built 1959
Built: 1959
Location: San Luis Obispo County
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309368
1960 Aerial photo of bridge and Shandon
Photo taken by California Highways and Public Works in 1960
Status: Open to traffic
Location: 35.185444,-120.701417
Carries Us Highway 101 SB over San Luis Obispo Creek
Design: beam/tee
Design Details: Concrete tee beam
Total Length: 569.9 Feet
Span Length: 40.0 Feet
Overview: Concrete tee beam bridge over San Luis Obispo Creek on Us Highway 101 SB
History: Built 1948; rehabilitated 2000
Built: 1948
Location: San Luis Obispo County
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309370
Looking from Ontario Road Bridge
Photo taken by unknown in 1971
309381
Viewing North in 1971
Southbound (SB) is on the left and Nort5hbound (NB) is on the right.
Photo taken by unknown in 1971
309383
May 18, 2014 looking North
Looking North from Ontario Ridge. Southbound (SB) on left and Northbound (NB) on right.
Photo taken by Dallam Oliver-Lee in May 18, 2014
Status: Open to traffic
Location: 35.289917,-120.659333
Carries California Blvd over US 101
Design: beam
Design Details: Beam
Total Length: 131.9 Feet
Span Length: 65.0 Feet
Overview: Beam bridge over US 101 on California Blvd
History: Built 1954; rehabilitated 1972
Built: 1954
Location: San Luis Obispo County
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309371
1956 (top) and 1961 (bottom) looking South
Photo taken by California Highways and Public Works in 1956 & 1961
309372
1954 view from California Blvd looking North
Photo taken by California Highways and Public Works in 1954
Status: Open to traffic
Location: 35.185556,-120.701194
Carries US 101 over San Luis Obispo Creek
Design: beam/tee
Design Details: Concrete tee beam
Total Length: 569.9 Feet
Span Length: 44.9 Feet
Overview: Concrete tee beam bridge over San Luis Obispo Creek on US 101
History: Built 1940; rehabilitated 1977
Built: 1940
Location: San Luis Obispo County
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309373
Viewing south of US 101 NB Bridge in 1941
Viewing south of US 101 NB Bridge in 1941 when it was two-lane two-way bridge.
Photo taken by California Highways and Public Works in 1941
309374
Viewing north of US 101 NB Bridge under construction
Photo taken by California Highways and Public Works in 1940
309380
Viewing North in 1971
Southbound (SB) is on the left and Nort5hbound (NB) is on the right.
Photo taken by unknown in 1971
309382
May 18, 2014 looking North
Viewing North from Ontario Ridge. Southbound (SB) on left and Northbound (NB) on right)
Photo taken by Dallam Oliver-Lee in May 18, 2014
Status: Removed but not replaced
Location: 35.279705,-120.653154
Carries over Union Pacific Railroad
Design: beam/stringer/wood
Design Details: Timber stringer
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Lost Timber stringer bridge over Union Pacific Railroad
History: Built Unknown year; Removed in 1950's
Built:
Location: San Luis Obispo County
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309375
August 1949 Photo looking North from UP Tracks
Photo taken by unknown in 1949
309445
July 29, 1944 Looking North
Photo taken by Union Switch & Signal Company on July 29, 1944
Status: Open to traffic
In progress of rehabilitation expected to be completed in 2015 with expanded lanes and bridge re-design.
Location: 35.244694,-120.682167
Carries Los Osos Valley Road over US 101
Design: beam
Design Details: Beam
Total Length: 299.9 Feet
Span Length: 103.0 Feet
Overview: Beam bridge over US 101 on Los Osos Valley Road
History: Built 1961; rehabilitated 1986
Built: 1961
Location: San Luis Obispo County
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309415
Flood of 1971
Looking North at Los Osos Valley Road at US 101 during the 1971 flood.
Photo taken by unknown in 1971
Status: Open to traffic
Location: 35.274572,-120.669714
Carries Marsh Street over San Luis Obispo Creek
Design: beam/stringer/steel
Design Details: Steel stringer
Total Length: 136.2 Feet
Span Length: 51.8 Feet
Overview: Steel stringer bridge over San Luis Obispo Creek on Marsh Street
History: Built 1948
Built: 1948
Location: San Luis Obispo County
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309422
1973 Flood Cleanup
Photo taken by unknown in 1973
Status: Open to traffic
Location: 35.130640,-120.612320
Carries N 12th St over Unnamed Creek
Design: unknown
Design Details:
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Bridge over Unnamed Creek on N 12th St
History: Built in early 1910's or 1900's.
Built:
Location: San Luis Obispo County
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Status: Replaced by a new bridge
Location: 35.130000,-120.605000
Carries Oak Park Blvd over US 101
Design: slab
Design Details: Slab
Total Length: 190.0 Feet
Span Length: 51.8 Feet
Overview: Lost Slab bridge over US 101 on Oak Park Blvd
History: Built 1956; Replaced 1993
Built: 1956
Location: San Luis Obispo County
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309431
Oak Park Blvd Overpass
Looking northbound toward Pismo Beach
Photo taken by California Highways and Public Works in 1957
Status: Replaced by a new bridge
Location: 35.187778,-120.718889
Carries San Luis Bay Drive over San Luis Obispo Creek
Design: beam/tee
Design Details: Concrete tee beam
Total Length: 202.1 Feet
Span Length: 40.0 Feet
Overview: Lost Concrete tee beam bridge over San Luis Obispo Creek on San Luis Bay Drive
History: Built 1957; replaced 2009
Built: 1957
Location: San Luis Obispo County
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Status: No longer exists
Location: 35.184840,-120.725204
Carries Blue Heron Drive over San Luis Obispo Creek
Design: unknown
Design Details:
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Lost Bridge over San Luis Obispo Creek on Blue Heron Drive
History: Built unknown; Destroyed/removed 1988-1994
Built:
Location: San Luis Obispo County
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Status: Open to traffic
Location: 35.231944,-120.688889
Carries Higuera Street over San Luis Obispo Creek
Design: beam/tee
Design Details: Concrete tee beam
Total Length: 267.1 Feet
Span Length: 38.1 Feet
Overview: Concrete tee beam bridge over San Luis Obispo Creek on Higuera Street
History: Built 1928
Built: 1928
Location: San Luis Obispo County
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309500
April 5, 1950
Looking West
309501
December 12, 1949
Looking West
309502
December 12, 1949
Looking West
Status: Replaced by a new bridge
Location: 35.254985,-120.669816
Carries Prado Road over San Luis Obispo Creek
Design: unknown
Design Details:
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Lost Bridge over San Luis Obispo Creek on Prado Road
History: Built unknown; Replaced 1957
Built:
Location: San Luis Obispo County
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309504
December 12, 1949
Looking East
Status: Open to traffic
Location: 35.255000,-120.670000
Carries Prado Road over San Luis Obispo Creek
Design: beam/tee
Design Details: Concrete tee beam
Total Length: 123.0 Feet
Span Length: 40.0 Feet
Overview: Concrete tee beam bridge over San Luis Obispo Creek on Prado Road
History: Built 1957
Built: 1957
Location: San Luis Obispo County
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Status: Removed but not replaced
Location: 35.287754,-120.657821
Carries Phillips Lane over Southern Pacific Railroad
Design: unknown
Design Details:
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Lost Bridge over Southern Pacific Railroad on Phillips Lane
History: Removed 1966
Built:
Location: San Luis Obispo County
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Status: Open to traffic
Location: 35.285368,-120.655702
Carries Union Pacific Railroad over Monterey Street
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 Monterey Street on Union Pacific Railroad
History: Built 1901
Built: 1901
Location: San Luis Obispo County
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Status: Replaced by a new bridge
Location: 35.124610,-120.574186
Carries Pacific Coast Railway over Arroyo Grande Creek
Design: truss/pony/queenpost
Design Details: Queenpost pony truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Lost Queenpost pony truss bridge over Arroyo Grande Creek on Pacific Coast Railway
History: Replaced 1893
Built:
Location: San Luis Obispo County
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Status: Replaced by a new bridge
Location: 35.124456,-120.574079
Carries Pacific Coast Railway over Arroyo Grande Creek
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 Arroyo Grande Creek on Pacific Coast Railway
History: Built 1893; Replaced 1911
Built: 1893
Location: San Luis Obispo County
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Status: Open to pedestrians only
Location: 35.182910,-120.732648
Carries Bob Jones Trail over San Luis Obispo Creek
Design: truss
Design Details: Truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Truss bridge over San Luis Obispo Creek on Bob Jones Trail
History:
Built:
Location: San Luis Obispo County
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Status: Open to traffic
Location: 35.353178,-120.788814
Carries Canet Road over Chorro Creek
Design: culvert
Design Details: Culvert
Total Length: 25.6 Feet
Span Length: 12.8 Feet
Overview: Culvert bridge over Chorro Creek on Canet Road
History: Built 2000
Built: 2000
Location: San Luis Obispo County
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Status: Filled in
Location: 35.270089,-120.653596
Carries Southern Pacific Railroad San Luis Obispo Roundhouse over Pit
Design: truss/pony/warren
Design Details: Warren pony truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Lost Warren pony truss bridge over Pit on Southern Pacific Railroad San Luis Obispo Roundhouse
History: Built 1903; Removed 1994
Built: 1903
Location: San Luis Obispo County
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442086
1953
Photo courtesy the San Luis Obispo County Historical Society
Status: Destroyed by flooding
Location: 35.493655,-120.645911
Carries State Highway 41 over Salinas River
Design: truss/pony
Design Details: Pony truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Lost Pony truss bridge over Salinas River on State Highway 41
History:
Built:
Location: San Luis Obispo County
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442635
Destroyed bridge
Bridge after pier washed out in floods
Photo from SLO Tribune archives
Status: Open to traffic
Location: 35.331650,-120.677743
Carries UP RR over hillside
Design: tunnel
Design Details: Tunnel
Total Length: 722.0 Feet
Span Length: 0.0 Feet
Overview: Tunnel under hillside on UP RR
History:
Built:
Location: San Luis Obispo County
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498265
Distant view with train
Photo taken by Tyler 2021
498266
Distant view
Photo taken by Tyler 2021
498267
Photo taken by Tyler 2021
Status: Open to traffic
Location: 35.330933,-120.632666
Carries UP RR over hillside
Design: tunnel
Design Details: Tunnel
Total Length: 527.0 Feet
Span Length: 0.0 Feet
Overview: Tunnel under hillside on UP RR
History:
Built:
Location: San Luis Obispo County
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498280
Photo taken by Tyler 2021
498281
Photo taken by Tyler 2021
Status: Open to traffic
Location: 35.333592,-120.635715
Carries UP RR over hillside
Design: tunnel
Design Details: Tunnel
Total Length: 481.0 Feet
Span Length: 0.0 Feet
Overview: Tunnel under hillside on UP RR
History:
Built:
Location: San Luis Obispo County
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498277
Photo taken by Tyler 2021
498278
Photo taken by Tyler 2021
Status: Open to traffic
Location: 35.350215,-120.635542
Carries UP RR over hillside
Design: tunnel
Design Details: Tunnel
Total Length: 3600.0 Feet
Span Length: 0.0 Feet
Overview: Tunnel under hillside on UP RR
History:
Built:
Location: San Luis Obispo County
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498269
Photo taken by Tyler 2021
498270
Photo taken by Tyler 2021
Status:
Location: 35.338986,-120.635137
Carries UP RR over hillside
Design: tunnel
Design Details: Tunnel
Total Length: 1354.0 Feet
Span Length: 0.0 Feet
Overview: Tunnel under hillside on UP RR
History:
Built:
Location: San Luis Obispo County
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498276
Photo taken by Tyler
Status: Open to traffic
Location: 35.434755,-120.606441
Carries Railroad over Trout Creek
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 Trout Creek on Railroad
History:
Built:
Location: San Luis Obispo County
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Status: Partially collapsed and portals are boarded up
Location: 35.321253,-120.626547
Carries Abandoned Southern Pacific Railroad over Hillside
Design: tunnel
Design Details: Tunnel
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Lost Tunnel under Hillside on Abandoned Southern Pacific Railroad
History: Collapsed 1910 and bypassed by current alignment
Built:
Location: San Luis Obispo County
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498263
South portal
Photo taken by Tyler 2021
498264
North portal
Photo taken by Tyler
Status: Intact but closed to all traffic
Location: 35.022704,-120.304354
Carries CA 166 Old Alignment over Alamo Creek
Design: truss/pony/warren/verticals
Design Details: Warren pony truss with all verticals
Total Length: 200.0 Feet
Span Length: 100.0 Feet
Overview: Warren pony truss with all verticals bridge over Alamo Creek on CA 166 Old Alignment
History: Bypassed 1959
Built:
Location: San Luis Obispo County
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499021
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.
