Historic Bridges: Contra Costa County, California

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.

Total Bridges Found: 6

Benicia - Martinez Bridge
George Miller Jr. Memorial Bridge
HSR

I-680 Southbound Over Carquinez Strait (Suisun Bay), Bayshore Road, and Railroad in Martinez and Benicia: Contra Costa County, California and Solano County, California, United States

Metal 10 Panel Bolt-Connected Warren Deck Truss, Fixed and Approach Spans: Metal Stringer (Multi-Beam),

Length: 6,215 ft. Main Span: 528 ft. Roadway: 60.7 ft. Main Spans: 10

Built 1962 By: American Bridge Company of New York, New York

This bridge is a late, but very long example of a continuous deck truss.

Benicia - Martinez Railroad Bridge
Southern Pacific Railroad Bridge
HSR

Railroad (Union Pacific) Over Carquinez Strait (Suisun Bay) in Martinez and Benicia: Contra Costa County, California and Solano County, California, United States

Metal 8 Panel Rivet-Connected Polygonal Warren Through Truss, Movable: Vertical Lift (Span Drive) and Approach Spans: Metal 12 Panel Multiple-Type-Connected Polygonal Warren Through Truss, Fixed

Length: 5,620 ft. Main Span: 328 ft. Main Spans: 1

Built 1930 By: American Bridge Company of New York, New York and Waddell and Hardesty of New York, New York

This difficult to photograph historic bridge is a very long structure with a variety of span types and is sandwiched between two highway bridges..

CA-4 Old River Bridge
HSR

CA-4 (California Delta Highway, Marengo Road) Over Old River in Rural: Contra Costa County, California and San Joaquin County, California, United States

Metal Rivet-Connected Pratt Through Truss, Movable: Swing (Center Pier) and Approach Spans: Metal 6 Panel Rivet-Connected Pratt Through Truss, Fixed

Length: 528 ft. Main Span: 132 ft. Roadway: 19.4 ft. Main Spans: 1

Built 1915 By: American Bridge Company of New York, New York

This is one of several attractive historic swing bridges along this stretch of CA-4 leading to Stockton.

Carquinez Bridge
Eastbound I-80 Bridge
HSR

I-80 (Eastbound) Over Carquinez Strait and Railroad (Union Pacific) in Crockett and Vallejo: Contra Costa County, California and Solano County, California, United States

Metal Bolt-Connected Baltimore Through Truss, Fixed and Approach Spans: Metal Stringer (Multi-Beam), Fixed

Length: 5,209 ft. Main Span: 1,100 ft. Roadway: 51.8 ft. Main Spans: 5

Built 1958 By: American Bridge Company of New York, New York

This large cantilever bridge takes on the overall shape of an earlier, now-demolished cantilever truss, but instead displays period construction details.

Richmond - San Rafael Bridge
John F. McCarthy Memorial Bridge
HSR