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CN Bridge #454.9

Through Plate Girder Bridge over Unnamed Creek
Dow City, Crawford County, Iowa

Click the Photo Above to See All Photos of This Bridge!
Name CN Bridge #454.9
Built By Illinois Central Railroad
Contractor Unknown
Currently Owned By Canadian National Railway
Length 74 Feet Total, 45 Foot Main Span
Width 1 Track
Height Above Ground 10 Feet (Estimated)
Superstructure Type Through Plate Girder and Trestle
Substructure Type Timber Pile
Date Fabricated Ca. 1900
Date Erected 1952
Traffic Count 2 Trains/Day (Estimated)
Current Status In Use
CN Bridge Number 454.9
Significance Local Significance
Documentation Date December 2018


Located near Dow City, this through girder bridge was relocated to this location.
Built in 1952, the bridge features a single through girder main span that was built in approximately 1900 approached by trestle and set onto timber substructures. At 45 feet long, the span was likely built around 1900 and was moved here from an unknown location in 1952. Unlike other girders in the area, this span does not match design to the other structures on the route.
Prior to 1952, a simple timber trestle and deck span stood at this location. It is unknown why the previous deck girder bridge was replaced.
Overall, the bridge appears to be in good to fair condition.

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

Citations

Source Type

Source

Erection Date 1973 Illinois Central Railroad Track Profile
Railroad Line History Source ICC Valuation Information, Compiled by Richard S. Steele