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294th Street Bridge

294th Street Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: June 2, 2016


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Key Facts

Facility Carried / Feature Intersected
294th Road Over Grasshopper Creek
Location
Rural: Atchison County, Kansas: United States
Structure Type
Metal 6 Panel Pin-Connected Pratt Full-Slope Pony Truss, Fixed and Approach Spans: Wood Stringer (Multi-Beam), Fixed
Construction Date and Builder / Engineer
By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
75 Feet (22.86 Meters)
Structure Length
129 Feet (39.32 Meters)
Roadway Width
14 Feet (4.27 Meters)
Spans
1 Main Span(s) and 3 Approach Span(s)
NBI Number
000031011503580

Historic Significance Rating (HSR)

Bridge Documentation

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

 This pony truss is overall traditionally composed with two major exceptions. The bridge uses unique cast iron bearing shoes that fit to the shape of the built-up end post. Cast iron details such as these are typical of older truss bridges from the 1880s or earlier. Another detail usually found on bridges from the 1870s is the use of star iron, which on this bridge is used for the outriggers. Beyond these two details the rest of the bridge is traditionally composed and resembles a ca. 1890s bridge. The Missouri Valley Bridge and Iron Works is one company known to use star iron outriggers even after star iron had largely become obsolete for bridge use (such as the 1890s). It is possible that this bridge is the product of Missouri Valley Bridge and Iron Works, but this is not proven.

Regardless of exact age and builder, the unusual details on this bridge make this a unique and highly significant example of a Pratt pony truss bridge.

This bridge sits on a substructure that is not original. The bridge is closed to traffic, likely a permanant closure. Many counties in Kansas have decided the best thing to do with historic bridges is abandon and/or demolish them because they don't like to inspect them. As such, this bridge may be a good candidate for relocation and reuse for non-motorized use on a trail or in a park.

The National Bridge Inventory suggests a 1907 construction date, which is likely incorrect.

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