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Fort Griffin Bridge

Fort Griffin Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: August 4, 2019

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Facility Carried / Feature Intersected
CR-188 Over Clear Fork Brazos River
Location
Rural: Shackelford County, Texas: United States
Structure Type
Metal 6 Panel Pin-Connected Pratt Through Truss, Fixed and Approach Spans: Wood Stringer (Multi-Beam), Fixed
Construction Date and Builder / Engineer
1885 By Builder/Contractor: King Bridge Company of Cleveland, Ohio
Rehabilitation Date
Not Available or Not Applicable
Main Span Length
109.0 Feet (33.2 Meters)
Structure Length
311.0 Feet (94.8 Meters)
Roadway Width
13.5 Feet (4.11 Meters)
Spans
1 Main Span(s) and 13 Approach Span(s)
Inventory Number
082090AA0188001

Historic Significance Rating (HSR)
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Bridge Documentation

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

View Historic American Engineering Record (HAER) Documentation For This Bridge

HAER Data Pages, PDF

View National Register of Historic Places Nomination Form For This Bridge

This bridge is an outstanding example of a Pratt truss bridge built by the King Bridge Company. An unusual detail can be found on the bottom chord near the hip vertical of the bridge. Here, the bottom chord does not connect to the vertical member, and instead the bottom chord has a pinned splice nearby. This detail, highly unusual on a Pratt truss bridge, seems reminiscent of the bottom chords of King Bridge Company bowstring truss bridges, where bottom chords were always spliced together in this manner. As such, this bridge shows some remnants of earlier design thinking of the 1870s continuing to survive into some of the 1880s designs of the company. The bridge is also noted for its built-up fishbelly floorbeams. The Historic American Engineering Record provided the following overview of the bridge: The Fort Griffin Iron Truss Bridge is the oldest functioning bridge in Shackelford County, Texas, and one of the state's oldest remaining trusses. It is also the last remaining pin-connected Pratt through truss in the county. Because it has survived with few alterations, the Fort Griffin Iron Truss Bridge is a remarkably intact example of an early metal truss bridge in Texas. Built to accommodate traffic between the county seats at Albany and Throckmorton, the bridge cuts through what used to Fort Griffin, a military checkpoint and cattle town. The Fort Griffin Iron Truss Bridge was nominated to the National Register of Historic Places in 1979.

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Maps and Links: Fort Griffin Bridge

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

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