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280th Street Bridge

CR-G62 Bridge (Iowa Number 235850)

280th Street Bridge

Primary Photographer(s): Nathan Holth and Rick McOmber

Bridge Documented: July 2, 2009

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Key Facts

Facility Carried / Feature Intersected
280th Street (CR-G62) Over Coal Creek
Rural: Mahaska County, Iowa: United States
Construction Date and Builder / Engineer
By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
51 Feet (15.5 Meters)
Structure Length
104 Feet (31.7 Meters)
Roadway Width
19 Feet (5.79 Meters)
1 Main Span(s) and 2 Approach 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 is a traditionally composed riveted truss bridge in Iowa. It conforms to a standard plan and a number of bridges similar in design to this one remain in Iowa, although the exact size and configuration varies from bridge to bridge making each bridge unique in some way.

This bridge is located at a scenic location where a small creek empties into the much larger Des Moines River. The bridge is a traditionally composed Iowa standard plan truss bridge and it has two steel stringer approach spans. The bridge retains good historic and structural integrity.

This bridge is so small and in such a rural location that its preservation and maintenance represents not only a commitment to historic bridges, but a wise and efficient spending of tax payer dollars. As a small span, it is less significant than larger and more complex standard plan truss bridges in Iowa, yet still stands out as a good candidate for continued maintenance and preservation.

In reality however, the majority of these bridges are fully capable of being rehabilitated for continued rural vehicular use and there is no reason to even consider the demolition of these bridges whether highly noteworthy or not. Many of Iowa's truss bridges are on rural dirt roads that have not been exposed to the extremely corrosive de-icing salt that bridges in other states have suffered from. As a result, they retain a comparatively high degree of structural integrity due to a striking lack of pack rust and section loss. In addition, these bridges were built with a higher quality of materials and construction than any modern bridge (contrary to what AASHTO would have you believe). These truss bridges are much more beautiful than any modern bridge. They contribute to the Iowa landscape in a positive manner and are an asset to the state.


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Maps and Links: 280th Street Bridge

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