UP 20th Street Bridge (Rockford)

Through Plate Girder Bridge over 20th Street
Rockford, Winnebago County, Illinois

Click the Photo Above to See All Photos of This Bridge!
Name UP 20th Street Bridge (Rockford)
Built By Chicago & North Western Railway
Contractor Lassig Bridge & Iron Works of Chicago
Currently Owned By Union Pacific Railroad
Length 26 Feet Total
Width 1 Track
Height Above Ground 11 Feet 8 Inches
Superstructure Type Through Plate Girder
Substructure Type Stone Masonry
Date Built 1890
Traffic Count 2 Trains/Day (Estimated)
Current Status In Use
UP Bridge Number 90.00
C&NW Bridge Number 452
Significance Local Significance
Documentation Date April 2019
A brief history of the Union Pacific Belvidere Subdivision:


Located east of downtown Rockford, this small through girder bridge crosses 20th Street.
Built in 1890, the bridge consists of a single through girder span, set onto stone substructures. The substructures were encased in concrete within recent years.
In addition, the bridge was reconstructed with high strength bolts and some new members. The bridge is currently operated as a one lane bridge with traffic lights, which have improved the flow of traffic.
Overall, the remaining girder span is in fair condition. Significant rebuilding of the bridge repaired this bridge to good health.

The author has ranked this bridge as being locally significant, due to the common design. Despite this, the bridge is a good example of an older generation girder.
The photo above is an overview.


Source Type


Build Date Chicago & North Western Railway Historical Society Archives
Contractor Missing Lassig Bridge & Iron Works plaque
Railroad Line History Source ICC Valuation Information, Compiled by Richard S. Steele

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