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Clarksville Rail Bridge

Subdivided Warren Through Truss Bridge over Shell Rock River
Clarksville, Butler County, Iowa

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Name Clarksville Rail Bridge
Built By Chicago, Rock Island & Pacific Railroad
Contractor American Bridge Company of New York
Currently Owned By Iowa Northern Railway
Length 471 feet Total, 137 Foot Main Spans
Width 1 Track
Height Above Ground 15 Feet (Estimated)
Superstructure Type Subdivided Warren Through Truss and Deck Girder
Substructure Type Stone Masonry and Concrete
Date Built 1921 and 1902
Traffic Count 3 Trains/Day (Estimated)
Current Status In Use
RI Bridge Number 1777
Significance Moderate Significance
Documentation Date March 2015


Located in Clarksville, this large bridge crosses the Shell Rock River.
The Burlington, Cedar Rapids & Northern Railway constructed the current approaches, which were built in 1902. These consist of 5-40' Deck Girders.
The main spans were built in 1921 by the Rock Island Railroad. These are a pair of heavily built, riveted 137' subdivided warren through trusses. The bridge rests on a combination of stone and concrete substructures.
This design of truss was common during the 1920s through 1940s, as it was easy to build around a smaller truss. It is unknown what kind of truss was here before 1921.
Overall, the bridge appears to be in good condition.

The author has ranked the bridge as being moderately significant, due to the common design.
The bridge can be accessed via a county park off Timber Road. The photo above is an overview.

Shell Rock River Railroad Bridges
Upstream Clarksville Trail Bridge
Downstream Confluence with W. Fork Cedar River

Citations

Source Type

Source

Build Dates American Bridge Company plaques
Contractor American Bridge Company plaques
Railroad Line History Source ICC Valuation Information, Compiled by Richard S. Steele