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UP - Carquinez Strait Bridge


Sacramento River RR bridge

Railroad bridge on right, looking South

Photo taken by Craig Philpott in March 2010


BH Photo #158080


Street View 


Railroad bridge with seven Warren through trusses, one lift truss section and Pratt deck truss approaches.


Warren through truss bridge over Carquinez Strait on double track of Union Pacific Railroad in Martinez
Martinez, Contra Costa County, California, and Solano County, California
Open to traffic
Originally built for the Southern Pacific Railroad in 1929-1930, this is the last simple truss railroad bridge built in the United States at a new location (i.e. where none had existed before).
- Amtrak (AMTK)
- Amtrak California (CDTX)
- Southern Pacific Railroad (SP)
- Union Pacific Railroad (UP)
Seven span Warren through truss, one vertical lift span and multiple Pratt deck truss span approach sections.
Length of largest span: 531.0 ft.
Total length: 5,603.5 ft. (1.1 mi.)
Deck width: 30.0 ft.
Also called
SP Carquinez Strait Bridge
Suisan Bay Bridge
Approximate latitude, longitude
+38.04150, -122.12330   (decimal degrees)
38°02'29" N, 122°07'24" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/576929/4210782 (zone/easting/northing)
Quadrangle map:
Vine Hill
82 ft. above sea level
Inventory number
BH 38645 (Bridgehunter.com ID)

Update Log 

  • March 5, 2019: New photos from Geoff Hubbs
  • November 5, 2016: Updated by Christopher Finigan: Added categories "Pin-connected", "Riveted"
  • September 3, 2014: Updated by Luke: Added categories "Amtrak California"
  • August 28, 2013: New photos from Douglas Butler
  • October 15, 2010: Updated by Craig Philpott: added photos plus details.
  • March 14, 2010: Updated by Craig Philpott: added pictures
  • March 8, 2010: Updated by Craig Philpott: Added Street view


  • Craig Philpott - craigphilpott63 [at] gmail [dot] com
  • Douglas Butler
  • Geoff Hubbs


UP Carquinez Strait Bridge
Posted October 23, 2013, by jayhawk

Maybe the writer meant pin connected - 1930 would be getting a bit late for a pin connected bridge.

UP Carquinez Strait Bridge
Posted October 23, 2013, by Jann Mayer (jannmayer [at] gmail [dot] com)

I'm not sure that this is the last simple truss built for a railroad at a new location. The Washington Blvd Bridge in Los Angeles County is a simple Pratt truss, and it was built in 2001 as part of a track re-alignment, so there was no bridge at the location previously.