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CA-4 Middle River Bridge

CA-4 Middle River Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: April 5, 2013

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and Videos
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and Links

Facility Carried / Feature Intersected
CA-4 Over Middle River
Location
Rural: San Joaquin County, California: United States
Structure Type
Metal Rivet-Connected Pratt Through Truss, Movable: Swing (Center Pier) and Approach Spans: Metal 6 Panel Rivet-Connected Warren Pony Truss, Fixed
Construction Date and Builder / Engineer
1915 By Builder/Contractor: American Bridge Company of New York, New York
Rehabilitation Date
1975
Main Span Length
130.0 Feet (39.6 Meters)
Structure Length
547.0 Feet (166.7 Meters)
Roadway Width
19.7 Feet (6 Meters)
Spans
1 Main Span(s) and 3 Approach Span(s)
Inventory Number
29 0049

Historic Significance Rating (HSR)
View Information About HSR Ratings

Bridge Documentation

View Archived National Bridge Inventory Report - Has Additional Details and Evaluation

View Historic Bridge Inventory Sheet For This Bridge

This bridge is one of several attractive historic swing bridges on CA-4. This example stands out for its combination of through and pony truss spans, which create a nice contrast that draws visual attention to the main swing span. The bridge retains good historic integrity. The American Bridge Company built the truss spans, however a plaque lists Tibbitts-Pacific Company of San Francisco, California as the on-site contractor for the bridge. The design was undertaken by F. E. Quail, San Joaquin County Surveyor. Along with the CA-4 Old River Bridge this is one of the two oldest unaltered highway swing bridges in California.

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Photo Galleries and Videos: CA-4 Middle River Bridge

 

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Bridge Photo-Documentation

Original / Full Size Photos
A collection of overview and detail photos. This gallery offers photos in the highest available resolution and file size in a touch-friendly popup viewer.
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View Photo Gallery

Bridge Photo-Documentation

Mobile Optimized Photos
A collection of overview and detail photos. This gallery features data-friendly, fast-loading photos in a touch-friendly popup viewer.
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View Video

CarCam: Westbound Crossing

Full Motion Video
Note: The downloadable high quality version of this video (available on the video page) is well worth the download since it offers excellent 1080 HD detail and is vastly more impressive than the compressed streaming video. Streaming video of the bridge. Also includes a higher quality downloadable video for greater clarity or offline viewing.

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View Video

CarCam: Eastbound Crossing

Full Motion Video
Note: The downloadable high quality version of this video (available on the video page) is well worth the download since it offers excellent 1080 HD detail and is vastly more impressive than the compressed streaming video. Streaming video of the bridge. Also includes a higher quality downloadable video for greater clarity or offline viewing.

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View Video

CarCam: Eastbound Crossing

Full Motion Video
Note: The downloadable high quality version of this video (available on the video page) is well worth the download since it offers excellent 1080 HD detail and is vastly more impressive than the compressed streaming video. Streaming video of the bridge. Also includes a higher quality downloadable video for greater clarity or offline viewing.

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Maps and Links: CA-4 Middle River Bridge

Coordinates (Latitude, Longitude):

Search For Additional Bridge Listings:

Bridgehunter.com: View listed bridges within 0.5 miles (0.8 kilometers) of this bridge.

Bridgehunter.com: View listed bridges within 10 miles (16 kilometers) of this bridge.

HistoricBridges.org Bridge Browser: View listed bridges within 0.5 miles (0.8 kilometers) of this bridge.

HistoricBridges.org Bridge Browser: View listed bridges within 10 miles (16 kilometers) of this bridge.

2021 National Bridge Inventory: View listed bridges within 0.5 miles (0.8 kilometers) of this bridge.

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