Historic Bridges of the U.S. | Chicago Avenue Bridge

Photos

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Counter Weight Trunion Rack And Pinion And Counterweight

Photo taken by Historic American Engineering Record

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Structural View Of Bascule Leaf

Photo taken by Historic American Engineering Record

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Trunion From River Pier

Photo taken by Historic American Engineering Record

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Detail Reduction Gear

Photo taken by Historic American Engineering Record

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Control Room Chicago Avenue Bridge

Photo taken by Historic American Engineering Record

Overview: Bascule bridge over North Branch Chicago River on Chicago Avenue in Chicago
Location: Chicago, Cook County, Illinois
Status: Open to traffic
History: Built 1914
Builders: - Byrne Brothers Dredging & Engineering Co.
- Ketler & Elliot Co.
Design: Bascule Pony truss
Dimensions: Length of largest span: 188.9 ft.
Total length: 290.9 ft.
Deck width: 36.0 ft.
Approximate latitude, longitude: +41.89667, -87.64417 (decimal degrees)
41°53'48" N, 87°38'39" W (degrees°minutes'seconds")
Approximate UTM coordinates: 16/446565/4638503 (zone/easting/northing)
USGS topographic map: Chicago Loop
Inventory numbers: IL 016-6008 (Illinois bridge number)
BH 15110 (Bridgehunter.com ID)
Inspection (as of 09/2007): Deck condition rating: Poor (4 out of 9)
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Poor (4 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 11.0 (out of 100)
Average daily traffic (as of 2006): 22,300