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UP Rock River Bridge (Jefferson)

Deck Plate Girder Bridge over Rock River
Jefferson, Jefferson County, Wisconsin

Click the Photo Above to See All Photos of This Bridge!
Name UP Rock River Bridge (Jefferson)
Built By Chicago & North Western Railway
Contractor (Superstructure) Unknown
Contractor (Substructure) Jutton-Kelly Construction Co. of Milwaukee
Currently Owned By Union Pacific Railroad
Length 382 Feet Total, 50 Foot Largest Spans
Width 1 Track
Height Above Ground 15 Feet (Estimated)
Superstructure Type Deck Plate Girder and Steel Stringer
Substructure Type Concrete and Concrete Pile
Date Built 1930-31
Traffic Count 2 Trains/Day (Estimated)
Current Status In Use
C&NW Bridge Number 179
UP Bridge Number 116.67
Significance Local Significance
Documentation Date December 2020


Located along Riverside Drive in Jefferson, this large girder and beam bridge crosses the Rock River, immediately downstream from the confluence with the Crawfish River.
According to newspaper articles, the bridge was started in July 1930 to replace an older trestle bridge which was in poor condition. By November of that year, most of the concrete piers had been built. The following spring, the steel was placed and the bridge open to traffic.
The bridge consists of a single deck girder span on the south end, four more steel girder spans, and then six steel stringer spans on the north end. These spans rest on concrete and concrete pile substructures.
Also according to the newspaper articles, the bridge was originally to have three spans instead of six on the north end. It is unknown why the plans were changed. The south span is also different, utilizing a traditional deck girder span. It is possible that this span was moved here from another location.
It is also unknown who supplied the steel. It is known that Jutton-Kelly Construction Company of Milwaukee constructed the piers and was responsible for the erection of the steel.
Overall, the bridge remains in good condition, with little significant deterioration.

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

Rock River Railroad Bridges
Upstream Rock River Trail Bridge (Jefferson Jct)
Downstream Ft. Atkinson Trail Bridge

Citations

Source Type

Source

Build Date Newspaper Articles
Railroad Line History Source ICC Valuation Information, Compiled by Richard S. Steele