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MPL Redwood River Bridge

Warren Through Truss Bridge over Redwood River
North Redwood, Redwood County, Minnesota

Click the Photo Above to See All Photos of This Bridge!
Name MPL Redwood River Bridge
Built By Minneapolis & St. Louis Railway
Contractor Phoenix Bridge Company of Phoenixville, Pennsylvania
Currently Owned By Minnesota Prairie Line Incorporated
Length 169 Feet Total, 140 Foot Truss
Width 1 Track
Height Above Ground 25 Feet (Estimated)
Superstructure Type Warren Through Truss and Trestle
Substructure Type Stone Masonry and Timber Pile
Date Built 1898
Traffic Count 2 Trains/Week (Estimated)
Current Status In Use
C&NW Bridge Number 59
Significance Moderate Significance
A brief history of the Minneapolis & St. Louis branch line from Minneapolis to South Dakota:


12/03/21


This truss bridge lies in rural Redwood County, just north of Redwood Falls.
Built in 1898, the bridge features a single riveted, 6-panel Warren Through Truss. In addition, the bridge is approached by a few trestle spans to the east. When constructed, the bridge originally was much longer. Prior to 1952, the east approach was partially filled, shortening the approach. Several trestle spans still exist immediately to the east of this bridge.
Also unique to this bridge is the skew in the truss. Skews are not uncommon, however most run at significantly larger angles than this bridge. This structure has a very small angle skew, approximately five degrees. The substructures of this bridge are timber piles and a cut stone abutment.
Trusses like this are becoming more rare along American railroads. While a span of this length once required a large truss, it can now be completed with a girder.
Rehabilitation work is planned to bring the route to Hanley Falls back to service in the near future. The future is clouded for this bridge, which may see significant upgrades.
Overall, the bridge appears to be in fair to poor condition. The truss portion of the structure shows little sign of deterioration, while the timber portions of the bridge appear to be in poor condition.

Historic Photo
Historic photo of the bridge

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

Citations

Source Type

Source

Build Date Chicago & North Western Railway Historical Society Archives
Contractor Phoenix Bridge Works Collection at the Hagley Library and Museum
Railroad Line History Source ICC Valuation Information, Compiled by Richard S. Steele



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