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Cooper County Bridge

   


Cooper County Bridge

Primary Photographer(s): Nathan Holth and Rick McOmber

Bridge Documented: July 3, 2009
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Key Facts

Facility Carried / Feature Intersected
Non-Functional Exhibit Over Non-Functional Exhibit
Location
Rural: Cooper County, Missouri
Construction Date and Builder / Engineer
By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
Not Available
Structure Length
Not Available
Roadway Width
Not Available
Spans
1 Main Span(s)
NBI Number
Not Applicable

Historic Significance Rating (HSR)

Bridge Documentation

This Bridge Is In Storage!

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 recommended 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 may have not been 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). Since the bridge has been relocated it is hard to tell if it once had bedstead legs or not. Other examples of this bridge type do not have legs.

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Photos and Videos: Cooper County Bridge

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