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IAIS Bridge #336.4

Steel Stringer Bridge over Field Entrance
Colfax, Jasper County, Iowa

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Name IAIS Bridge #336.4
Built By Chicago, Rock Island & Pacific Railroad
Contractor Unknown
Currently Owned By Iowa Interstate Railroad
Length 20 Feet Total
Width 1 Track
Height Above Ground 10 Feet (Estimated)
Superstructure Type Steel Stringer
Substructure Type Concrete
Date Built Ca. 1940
Traffic Count 5 Trains/Day (Estimated)
Current Status In Use
IAIS Bridge Number 3364
Significance Minimal Significance
Documentation Date April 2018


This small steel stringer bridge crosses an unnamed field opening near Colfax.
Built in approximately 1940, the bridge consists of a single steel stringer span, set onto concrete abutments. The bridge is located parallel to County Road F48.
Overall, the bridge appears to be in fair condition, with some deterioration noted. The bridge also features a ballasted deck.

The author has ranked this bridge as being minimally significant, due to the common and modern design.
The photo above is an overview.

Citations

Source Type

Source

Build Date Estimated based on similar bridges
Railroad Line History Source ICC Valuation Information, Compiled by Richard S. Steele