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Monte Rio Bridge

Bohemian Highway Bridge

Monte Rio Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: April 8, 2013

View Photos
and Videos
View Maps
and Links

Facility Carried / Feature Intersected
Bohemian Highway Over Russian River
Location
Rural: Sonoma County, California: United States
Structure Type
Metal 6 Panel Rivet-Connected Pratt Full-Slope Pony Truss, Fixed and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Construction Date and Builder / Engineer
1934 By Builder/Contractor: Unknown
Rehabilitation Date
Not Available or Not Applicable
Main Span Length
100.0 Feet (30.5 Meters)
Structure Length
772.0 Feet (235.3 Meters)
Roadway Width
20 Feet (6.1 Meters)
Spans
5 Main Span(s) and 7 Approach Span(s)
Inventory Number
20C0018

Historic Significance Rating (HSR)
View Information About HSR Ratings

Bridge Documentation

This bridge's future is at risk!

Bridge Status: Originally slated for demolition, an August 2023 article says the bridge will be retrofitted instead. Despite this being a positive historic preservation outcome, the county called this a "an incredibly frustrating situation!" and claims an ugly replacement slab of concrete would have been better.

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

View A Historical Article About This Bridge

This bridge is an uncommon example of a multi-span pony truss. It features five pony truss spans. A series of steel stringer span provide an approach to the bridge. The piers and abutments are concrete. Truss bridges usually have metal railings (such as lattice) but this bridge's cantilevered sidewalks have a concrete balustrade railing. The length of the bridge, use of pony trusses (instead of through trusses) and the balustrade railings all combine to give this bridge a much more streamlined appearance than is found with most truss bridges. The bridge retains excellent historic integrity with no major alterations noted. The opening of the bridge was met with a surprising amount of fanfare for a bridge of its size, with ribbon-cutting ceremonies attended by a number of dignitaries including the governor. An article in California Highways and Public Works Magazine featured the bridge and a photo from the article is shown below.

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Photo Galleries and Videos: Monte Rio Bridge

 

View Photo Gallery

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.
Alternatively, Browse Without Using Viewer

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View Video

CarCam: Southeastbound 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: Northwestbound 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: Monte Rio 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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