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Calaveras Bridge

Wilson County Camelback Bridge

Calaveras Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: August 5, 2019

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Key Facts

Facility Carried / Feature Intersected
FM-775 (Old CR-117 Former FM-3444 Over San Antonio River
Location
Near Calaveras: Wilson County, Texas: United States
Structure Type
Metal Pin-Connected Pennsylvania Through Truss, Fixed and Approach Spans: Metal Rivet-Connected Polygonal Warren Pony Truss, Fixed
Construction Date and Builder / Engineer
1890 By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
180 Feet (55 Meters)
Structure Length
487 Feet (148 Meters)
Roadway Width
Not Available
Spans
1 Main Span(s)
NBI Number
Not Applicable

Historic Significance Rating (HSR)

Bridge Documentation

This is a rare pin-connected Pennsylvania through truss bridge also noted for its camelback configuration of its top chord. The top chord and end posts have five slopes like a Camelback truss. However, as the panels are subdivided, the bridge is considered a Pennsylvania truss, or perhaps a "Camelback Pennsylvania" truss. The bridge includes polygonal Warren pony truss approach spans, which are newer than the main span. It is not known when these spans date to, but they would have been built sometime in the first half of the 20th century. The bridge was bypassed and abandoned in 1986. Given the rarity of the bridge design, this bridge needs to be preserved, perhaps by relocating and preserving the truss in a new location for pedestrian use, assuming there is not a need for a trail in the bridge's current location.

HAER Data Pages, PDF

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Photo Galleries and Videos: Calaveras Bridge

 
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Maps and Links: Calaveras Bridge

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