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BNSF Prairie River Bridge

Warren Deck Truss Bridge over Prairie River
La Prairie, Itasca County, Minnesota

Click the Photo Above to See All Photos of This Bridge!
Name BNSF Prairie River Bridge
Built By Great Northern Railway
Contractor Unknown
Currently Owned By BNSF Railway
Length 307 Feet Total, 135 Foot Main Span
Width 1 Track
Height Above Ground 10 Feet (Estimated)
Superstructure Type Warren Deck Truss and Deck Girder
Substructure Type Concrete and Steel Tower
Date Built 1899, Rebuilt 1928/29
Traffic Count 8 Trains/Day (Estimated)
Current Status In Use
BNSF Bridge Number 108.9
Significance Moderate Significance


Located just east of Grand Rapids, this deck truss bridge crosses the Prairie River.
Originally built in 1899, the bridge features a single 7-panel riveted Warren Deck Truss. In addition, this bridge is approached by deck girders and an I-Beam span on the west end. The entire bridge rests on concrete substructures and steel towers.
In 1929, the truss was upgraded with an additional truss line. While this alteration changed the truss, it is old enough to be considered historic.
Overall, the bridge appears to be in fair condition.

Historic Photo
Historic photo of the bridge

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

Citations

Source Type

Source

Build Date Great Northern Railway 1961 Bridge Records at the Minnesota Historical Society
Railroad Line History Source ICC Valuation Information, Compiled by Richard S. Steele