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Old River Bridge

Photos 

Old River Bridge

Looking NE at South face

Photo taken by Craig Philpott in March 2010

Enlarge

BH Photo #158026

Map 

Street View 

Facts 

Overview
Swing bridge over Old River on CA 4 in Discovery Bay
Location
San Joaquin County, California, and Contra Costa County, California
Status
Open to traffic
History
Built 1915; rehabilitated 1978
Design
Howe through truss swing bridge with Pratt truss approach spans
Dimensions
Length of largest span: 131.9 ft.
Total length: 527.9 ft.
Deck width: 19.4 ft.
Vertical clearance above deck: 15.5 ft.
Recognition
Eligible for the National Register of Historic Places
Approximate latitude, longitude
+37.89072, -121.57039   (decimal degrees)
37°53'27" N, 121°34'13" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/625704/4194653 (zone/easting/northing)
Quadrangle map:
Woodward Island
Elevation
8 ft. above sea level
Inventory numbers
CA 29-45 (California bridge number)
BH 11436 (Bridgehunter.com ID)
Inspection (as of 04/2015)
Deck condition rating: Good (7 out of 9)
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Good (7 out of 9)
Appraisal: Functionally obsolete
Sufficiency rating: 38.7 (out of 100)
Average daily traffic (as of 2009)
8,200

Update Log 

  • August 2, 2016: New Street View added by Douglas Butler
  • August 1, 2016: Updated by Christopher Finigan: Added categories "Pin-connected", "Riveted"
  • December 10, 2015: New Street View added by Douglas Butler
  • August 22, 2013: New photo from Douglas Butler
  • March 13, 2010: Updated by Craig Philpott: Updated design added photos and street view

Sources 

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