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Chicago River Bascule Bridges, Spanning Chicago River & its north & south branche, Chicago, Cook County, IL



B&W Photos

HB451189

HB451190


Data Pages


Photo Caption Pages


Item Title


Location
Spanning Chicago River & its north & south branche, Chicago, IL

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Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER IL-111
Unprocessed field note material exists for this structure (N642).
Building/structure dates: 1900 initial construction
Significance: The development of the Chicago trunnion 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. // Between 1865 and 1890, the City of Chicago built 55 movable highway bridges over waterways within municipal limits. All were center-pier swing spans. Despite its ubiquity, the swing span was not universally admired. Its critics pointed to the fact that the center-pier design was becoming a navigational hazard for the ever-larger vessels of the late nineteenth century.

Subjects
Beaux-Arts Architectural Elements
Bridge Construction


Related Names
Chicago Bridge Division
Department Of Public Works
Hess, Jeffrey A., Historian
Lowe, Jet, Photographer


Collection
Historic American Engineering Record (Library of Congress)

Contents
Photograph caption(s): 
1. GENERAL VIEW OF MOVEABLE BRIDGES ALONG NORTH BRANCH OF THE CHICAGO RIVER, LOOKING NORTHWEST FROM THE SEARS TOWER
2. GENERAL VIEW OF MOVEABLE BRIDGES CROSSING THE SOUTH BRANCH OF THE CHICAGO RIVER, LOOKING SOUTH FROM THE SEARS TOWER


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