logo

Soo Line Trail US-10 Bridge

Girder Bridge over US Highway 10 and BNSF Railway
Near Royalton, Morrison County, Minnesota

Click the Photo Above to See All Photos of This Bridge!
Name Soo Line Trail US-10 Bridge
Built By Minneapolis, St. Paul & Sault Ste. Marie Railway
Contractor Unknown
Currently Owned By Minnesota DNR
Length 325 Feet Total, 70 Foot Largest Span
Width 1 Track
Height Above Ground 20 Feet (Estimated)
Superstructure Type Through and Deck Plate Girder
Substructure Type Concrete
Date Built 1958, Possibly Using Older Spans
Traffic Count 0 Trains/Day (Bridge is a Trail)
Current Status Rails to Trails
Significance Local Significance
Documentation Date January 2022


Located between Royalton and Little Falls, this large girder bridge carries the Soo Line Trail over US Highway 10 and the BNSF Railway mainline.
Reportedly built in 1958, this bridge replaced an older timber and beam bridge that crossed both a single lane of US-10 and the Northern Pacific. In 1958, US-10 would be widened to the present four lane configuration, requiring a larger bridge.
As a result, the Soo Line and the Minnesota Highway Department built a new girder bridge. The current bridge consists of three standard deck girder spans over US-10, and then through and deck girder spans across the BNSF. The entire bridge sits on concrete substructures.
While the roadway spans appear to be of standard 1950s design, the three spans over the BNSF may be secondhand spans relocated from elsewhere. The author is currently working to confirm this.
Overall, the bridge appears to be in good condition, with no significant alterations or deterioration.

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

Citations

Source Type

Source

Build Date 2008 National Bridge Inventory
Railroad Line History Source ICC Valuation Information, Compiled by Richard S. Steele