UP Bridge #228.45

Stone Arch Bridge over Unnamed Creek
Alton, Sioux County, Iowa

Click the Photo Above to See All Photos of This Bridge!
Name UP Bridge #228.45
Built By Chicago, St. Paul, Minneapolis & Omaha Railway
Contractor James McClure of St. Paul, Minnesota
Currently Owned By Union Pacific Railroad
Length 6 Feet Total
Width 1 Track
Height Above Ground 5 Feet (Estimated)
Superstructure Type Stone Arch
Substructure Type Stone Masonry
Date Built 1902
Traffic Count 4 Trains/Day (Estimated)
Current Status In Use
C&NW Bridge Number 770
UP Bridge Number 228.45
Significance Local Significance
Documentation Date November 2019
A brief history of the Union Pacific Mankato and Worthington Subdivisions:


Located on the south side of Alton, this small stone arch bridge crosses an unnamed creek.
Built in 1902, the bridge consists of a stone arch span. Relatively few stone arches exist on the Mankato-Sioux City segment of this route.
It is highly likely this span was built to replace an aging wooden trestle.
Overall, the bridge appears to be in good condition, with little notable deterioration.

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


Source Type


Build Date Chicago & North Western Railway Historical Society Archives
Contractor Chicago & North Western Railway Historical Society Archives
Railroad Line History Source ICC Valuation Information, Compiled by Richard S. Steele

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