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Snodgrass Slough Bridge

Twin Cities Road Bridge



Snodgrass Slough Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: April 6, 2013
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Key Facts

Facility Carried / Feature Intersected
Twin Cities Road (CR-E13) Over Snodgrass Slough
Location
Rural: Sacramento County, California: United States
Structure Type
Metal Rivet-Connected Warren Through Truss, Movable: Swing (Center Pier) and Approach Spans: Concrete Slab, Fixed
Construction Date and Builder / Engineer
1931 By Builder/Contractor: C. J. Nystedt and M. A. Jenkins

Technical Facts

Rehabilitation Date
1965
Main Span Length
184 Feet (56.08 Meters)
Structure Length
1038 Feet (316.38 Meters)
Roadway Width
21 Feet (6.4 Meters)
Spans
1 Main Span(s) and 30 Approach Span(s)
NBI Number
24C0053

Historic Significance Rating (HSR)

Bridge Documentation

This Bridge's Future Is At Risk!

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

This historic bridge is slated for demolition and replacement!

This bridge is noted for its main span which no longer operates for boats, but is a swing span. The swing span truss does not have a "tower" above the swing pier, instead the truss top chord maintains the same position parallel to the bottom chord. However, over the swing pier, pin connections are present on the top chord instead of the riveted connections found on all other connections. The use of pin connections at these areas where the opening and closing process introduced variable forces into the bridge truss was not an uncommon practice, even long after the "pin connected" truss era had ended, as was the case when this bridge was built. The approach spans for this bridge are not original. The original approach spans were timber. The truss swing span has some alterations with some members and end post sections having been replaced. However, the bridge still conveys its design and is a far more visually attractive structure than the replacement bridge planed at this location will be.

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