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Chicago River Bascule Bridge, Franklin Street, Spanning Chicago River at North Franklin Street, Chicago, Cook County, IL



B&W Photos

HB449653
North Portal With Bridge Tender's House


Data Pages


Photo Caption Pages


Item Title


Location
Spanning Chicago River at North Franklin Street, Chicago, IL

Find maps of Chicago, IL


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER IL-65
Building/structure dates: 1920 initial construction
Significance: The development of the Chicago trunnoin bascule bridge occurred during the first three decades of the twentieth century. Despite the controversy over patent infringement -- Joseph E. Strauss charged the City of Chicago engineers with infringing on his patented Strauss-Trunion bascule bridge -- the Chicago bascule received great acclaim within the civil engineering profession. The Franklin Street Bridge was completed at the same time the City of Chicago was settling the patent dispute with Strauss.

Subjects
Bascule Bridges
Bridge Construction


Related Names
Great Lakes Dredge & Dock Company
Ketler & Elliot Company
City Of Chicago
Sneddon, Matthew T., Historian


Collection
Historic American Engineering Record (Library of Congress)

Contents
Photograph caption(s): 
1. SOUTH PORTAL OF BRIDGE LOOKING EAST
2. DETAIL OF SOUTH PORTAL
3. DETAIL OF TRUSS AND PEDESTRIAN FOOTPATH LOOKING NORTHWEST
4. NORTH PORTAL WITH BRIDGE TENDER'S HOUSE
5. DETAIL OF LIFTING MECHANISM WITH BRIDGE TENDER'S HOUSE IN BACKGROUND


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