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Turney Bridge

Turney Bridge

Primary Photographer(s): Nathan Holth and Rick McOmber

Bridge Documented: July 3, 2009

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Key Facts

Facility Carried / Feature Intersected
CR-453 (CR-307) Over Thomas Creek
Rural: Shelby County, Missouri: United States
Construction Date and Builder / Engineer
1907 By Builder/Contractor: Pan American Bridge Company of New Castle, Indiana

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
28 Feet (8.5 Meters)
Structure Length
29 Feet (8.8 Meters)
Roadway Width
10.8 Feet (3.29 Meters)
1 Main Span(s)
NBI Number

Historic Significance Rating (HSR)
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Bridge Documentation

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

This bridge follows a rare design that was used from roughly 1900 through 1915. It consists of a double-Warren truss configuration made with built-up rolled beams made of up extremely lightweight riveted angles, and vertical endposts made of channels. It is a very distinctive and unique design that is immediately recognizable as dissimilar from all other truss types. Compare this bridge to Michigan's Powers Highway Bridge. Sometimes these small trusses are called lattice trusses because the truss looks like a lattice, especially on a small truss like these bridges, however this naming is not recomended because it leads to confusion with the Warren Quadrangular (and similar) truss configurations which is the real lattice truss configuration. The bridge type was marketed as an inexpensive and simpler alternative to the larger and more traditional truss bridge types that  are familiar to this period. This bridge features gusset plates at the central top chord connection that rise up above the top chord and have two empty holes on them. These probably were a built-in feature to attach the bridge to  a crane and lift it into place. Given the lightweight nature of the bridge, it is likely the trusses, if not the whole bridge, were brought to site pre-assembled.

This bridge is not a bedstead. Vertical endposts do not mean that a truss is a bedstead. Bedstead truss bridges combine superstructure and substructure, since they have a vertical end post that extends below the bottom chord to act as a bridge support (substructure).

The road this bridge is on as well as the bridge itself is open to motorized vehicular traffic, with the bridge having a six ton weight limit posted. However, the road is as unimproved and overgrown as some roads in states like Michigan that are completely abandoned! The "road" is a two-track roadway with extensive grass growing on the road, which constantly brushes the underside of any cars that drive on it.


Photo Galleries and Videos: Turney Bridge

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Maps and Links: Turney Bridge

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