Photos 

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South Portal Of Bridge Looking East

Photo taken by Historic American Engineering Record

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Detail Of South Portal

Photo taken by Historic American Engineering Record

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Detail Of Truss And Pedestrian Footpath Looking Northwest

Photo taken by Historic American Engineering Record

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North Portal With Bridge Tender's House

Photo taken by Historic American Engineering Record

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Detail Of Lifting Mechanism With Bridge Tender's House In Background

Photo taken by Historic American Engineering Record

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Map 

Vicinity Map

Vicinity map

Map links:

Facts 

Overview
Bascule bridge over Main Branch Chicago River on Franklin Street in Chicago
Location
Chicago, Cook County, Illinois
Status
Open to traffic
History
Built 1920; rehabilitated 2002
Builders
- Great Lakes Dredge & Dock Co. (Substructure)
- Ketler & Elliot Co. (Superstructure)
Design
Bascule Pratt pony truss
Dimensions
Length of largest span: 252.0 ft.
Total length: 319.9 ft.
Deck width: 38.1 ft.
Approximate latitude, longitude
+41.88750, -87.63583   (decimal degrees)
41°53'15" N, 87°38'09" W   (degrees°minutes'seconds")
Inventory numbers
IL 016-6020 (Illinois bridge number)
BH 15151 (Bridgehunter.com ID)
Inspection (as of 10/2006)
Deck condition rating: Good (7 out of 9)
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Good (7 out of 9)
Sufficiency rating: 76.0 (out of 100)
Average daily traffic (as of 2006)
17,000

Categories 

Bascule (443)
Built 1920 (521)
Built during 1920s (4,063)
Chicago, Illinois (78)
Cook County, Illinois (82)
Great Lakes Dredge & Dock Co. (2)
HAER documented (329)
Illinois (877)
Ketler & Elliot Co. (7)
Movable (858)
Open (21,688)
Owned by city (1,919)
Pony truss (9,426)
Pratt truss (1,483)
Span length 250-500 feet (581)
Total length 250-500 feet (2,117)
Truss (15,894)

Update Log 

Sources 

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