Historic Bridges of the U.S.

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Dupo Bridge Route 3

Looking North

Photo taken by John Christeson in April 2007

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Photo taken by Kim Harvey in September 2008

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Photo taken by Kim Harvey in September 2008

Vicinity map

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Written by John Christeson

Heading North towards Cahokia on Ill. Route 3. Bridge seemed to be in decent shape.

Overview: Through truss bridge over Cahokia Canal and UPRR on IL 3 in Cahokia
Location: Dupo, St. Clair County, Illinois
Status: Open to traffic
Future prospects: scheduled for replacement in the next 5 years
History: Built 1954; rehabilitated 1987
Design: Warren through truss
Dimensions: Length of largest span: 230.0 ft.
Total length: 902.9 ft.
Deck width: 51.8 ft.
Vertical clearance above deck: 14.7 ft.
Approximate latitude, longitude: +38.54861, -90.19417 (decimal degrees)
38°32'55" N, 90°11'39" W (degrees°minutes'seconds")
Approximate UTM coordinates: 15/744520/4270420 (zone/easting/northing)
USGS topographic map: Cahokia
Inventory numbers: IL 082-0030 (Illinois bridge number)
BH 15676 (Bridgehunter.com ID)
Inspection (as of 09/2007): Deck condition rating: Serious (3 out of 9)
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Critical (2 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 2.0 (out of 100)
Average daily traffic (as of 2007): 11,800