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Hanley Falls Rail Bridge

Timber Trestle and Girder over Yellow Medicine River and 510th Street
Hanley Falls, Yellow Medicine County, Minnesota

Click the Photo Above to See All Photos of This Bridge!
Name Hanley Falls Rail Bridge
Built By Minneapolis & St. Louis Railway
Contractor Minnesota Highway Department of St. Paul, Minnesota
Currently Owned By BNSF Railway
Length 427 Feet Total, 39 Foot Road Span
Width 1 Track
Height Above Ground 20 Feet (Estimated)
Superstructure Type Through Plate Girder and Wooden Trestle
Substructure Type Concrete and Timber Pile
Date Built 1941
Traffic Count 1 Train/Day (Estimated)
Current Status In Use
C&NW Bridge Number 69
Significance Minimal Significance


This standard wooden trestle bridge crosses the Yellow Medicine River near Hanley Falls.
Dating to the original construction of the route, this bridge features numerous wooden trestle spans on timber bents. Likely the most utilized design on American railroads, these designs were cheap and durable, despite having to regularly be replaced.
In 1941, the bridge was altered. A new through girder span was added to cross 510th Street, and was set onto concrete piers.
Currently, the bridge consists of a single through girder and 28 spans of wooden trestle. It is impossible to date the wooden structures, as they have likely been upgraded and replaced numerous times since construction.
The use of a timber trestle to cross this river is a surprising yet logical choice. While the nearby BNSF bridge was built of steel and stone, it also carries a much heavier traffic load than this structure. Timber trestles are a cheap alternative to a steel bridge, and optimal for a crossing like this.
Overall, the bridge appears to be in fair condition. Some deterioration of the pilings was noted, and many piles have been reinforced with steel piles.

The author has ranked this bridge as being minimally significant, due to the extremely common design and newer age.
The photo above is an overview.

Yellow Medicine River Railroad Bridges
Upstream C&NW Yellow Medicine River Bridge (Minneota)
Downstream BNSF Yellow Medicine River Bridge

Citations

Source Type

Source

Build Date Minnesota Highway Department plaque
Contractor Minnesota Highway Department plaque
Railroad Line History Source ICC Valuation Information, Compiled by Richard S. Steele