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Fossil Prairie Park Trail Bridge

Half Through Plate Girder Bridge over Winnebago River
West of Rockford, Floyd County, Iowa

Click the Photo Above to See All Photos of This Bridge!
Name Fossil Prairie Park Trail Bridge
Built By Chicago, Rock Island & Pacific Railroad
Contractor Unknown
Currently Owned By Floyd County
Length 150 Feet Total, 50 Foot Spans
Width 1 Track
Height Above Ground 10 Feet (Estimated)
Superstructure Type Half Through Girder
Substructure Type Concrete
Date Built 1910
Traffic Count 0 Trains/Day (Bridge is a Trail)
Current Status Rails to Trails
Significance Local Significance
Documentation Date March 2014 and September 2017
In 1910, the Rockford Brick & Tile Company constructed a new plant, with eight kiln, and a massive production area, located one mile west of Rockford, Iowa.
With 87 acres of clay-rich land, the company just needed a method of shipping. Hence, the Chicago, Rock Island & Pacific operated a spur, built as a joint venture between the two parties.
The CRI&P had an existing line through Rockford, and allowed for connections to Cedar Rapids and Mason City, and ultimately Chicago and Saint Paul.
The company ceased operations in 1977, and the land was purchased by Floyd County.
The area is now a county park, which in the author's opinion is a must visit for any day trip. The park offers dramatic views of the pits in which the clay was excavated from, as well as the surrounding areas.
Three years later, the Rock Island Railroad would go belly up, and is now operated by the Iowa Northern Railway.
06/26/21


Located near Rockford, this unique through girder bridge crosses the Winnebago River.
Built in 1910 to serve the Rockford Brick & Tile Company, the bridge consists of three half through girder spans. While most spans on spurs typically came from another location, these spans were unique and did not. The reasoning was that the railroad worried about loading, so they chose to build an entirely new bridge to assure safe operations for heavy loads.
Currently, the bridge consists of the three girders on concrete substructures. The girders are also unique, as they appear to be half girders, instead of true through or deck girders. These are relatively uncommon on railroads.
Overall, the bridge appears to be in fair condition. Some significant deterioration has begun of the substructures, and steps should be taken to address this.

The author has ranked this bridge as being locally significant, due to the newer age, despite the unique design of the bridge.
The photo above is an overview. A special thank you goes out to Luke Harden for finding information on this bridge.

Winnebago River Railroad Bridges
Upstream Portland Rail Bridge
Downstream Confluence with Shell Rock River

Citations

Source Type

Source

Build Date Brick and Clay Record, Volume 39
Railroad Line History Source ICC Valuation Information, Compiled by Richard S. Steele



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