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CN Old IL-78 Bridge

Deck Plate Girder Bridge over Former Illinois Highway 78
Warren, Jo Daviess County, Illinois

Click the Photo Above to See All Photos of This Bridge!
Name CN Old IL-78 Bridge
Built By Illinois Central Railroad
Contractor American Bridge Company of New York
Currently Owned By Canadian National Railway
Length 40 Feet Total
Width 1 Track
Height Above Ground 15 Feet (Estimated)
Superstructure Type Deck Plate Girder
Substructure Type Concrete
Date Built 1923
Traffic Count 10 Trains/Day (Estimated)
Current Status In Use
CN Bridge Number 140.3
Significance Local Significance
Documentation Date April 2018


Located near Warren along the Wisconsin/Illinois border, this deck girder bridge crosses an old alignment of Illinois Highway 78.
Built in 1923, the bridge represents an early grade separation project on Illinois highways. The bridge features a single deck girder span, set onto concrete abutments. The girder contains a ballasted deck.
Girders like this were commonly used as underpasses, due to the ease of construction. The highway underneath was rerouted in 1993, primarely to ease the curve that the old route took.
Overall, the bridge appears to be in good condition.

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

Citations

Source Type

Source

Build Date Illinois Central 1973 track profile
Contractor American Bridge Company plaque
Railroad Line History Source ICC Valuation Information, Compiled by Richard S. Steele