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Bradgate Trail Bridge

Deck Plate Girder Bridge over West Des Moines River
Bradgate, Humboldt County, Iowa

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Name Bradgate Trail Bridge
Built By Chicago & North Western Railway
Contractor American Bridge Company of New York
Currently Owned By Humboldt County
Length 350 Feet Total, 70 Foot Spans
Width 1 Track
Height Above Ground 10 Feet (Estimated)
Superstructure Type Deck Plate Girder
Substructure Type Stone Masonry and Concrete
Date Built 1902, Extended 1917
Traffic Count 0 Trains/Day (Bridge is a Trail)
Current Status Rails to Trails
C&NW Bridge Number 2570
Significance Local Significance
Documentation Date January 2019


Located west of Bradgate, this large deck girder bridge crosses the W. Fork Des Moines River.
Built in 1902, the bridge has been extended at least once. While two of the spans date to 1902, two more date to 1917. A fifth span, added on the east end, did not appear in a valuation survey. However, it seems likely that this fifth span was also built in 1917.
Currently, the bridge consists of five deck girder spans, set onto stone and concrete substructures. This structure is typical for this route and the Iowa Division. The bridge has since become part of the Three Rivers Trail.
Overall, the bridge appears to be in excellent condition. The mystery of the fifth span cannot be solved, although the concrete abutments appear to largely be similar.

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

W. Fork Des Moines River Railroad Bridges
Upstream Emmetsburg Rail Bridge
Downstream Confluence of East and West Forks

Citations

Source Type

Source

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