Historic Photographs

Home

Search

Subject Browse
Browse by Subject >>

State/City Browse
Alaska
Alabama
Arkansas
Arizona
California
Colorado
Connecticut
District of Columbia
Delaware
Florida
Georgia
Hawaii
Iowa
Idaho
Illinois
Indiana
Kansas
Kentucky
Louisiana
Massachusetts
Maryland
Maine
Michigan
Minnesota
Missouri
Mississippi
Montana
North Carolina
North Dakota
Nebraska
New Hampshire
New Jersey
New Mexico
Nevada
New York
Ohio
Oklahoma
Oregon
Pennsylvania
Rhode Island
South Carolina
South Dakota
Tennessee
Texas
Utah
Virginia
Vermont
Washington
Wisconsin
West Virginia
Wyoming


Home

>

Illinois

>

Chicago

>

East Division Street Bridge, Spanning North Branch Canal at West Division Stree, Chicago, Cook County, IL



B&W Photos

HB456153

HB456154

HB456155

HB456156

HB456157

HB456158

HB456159

HB456160


Data Pages


Photo Caption Pages


Color Transparencies

Image not currently available to download
Please email us to
purchase this image.
Item Title


Location
Spanning North Branch Canal at West Division Stree, Chicago, IL

Find maps of Chicago, IL


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER IL-147
Building/structure dates: 1903
Significance: When Chicago became a major commercial and industrial center after the Civil War, the most common American drawbridge was the swing bridge, horizontally rotating on a center pier to open two navigation channels. The center pier, however, became a navigational hazard for the ever-larger craft of the late nineteenth century, especially on crowded, narrow waterways such as the Chicago River. During the late 1890s, Chicago City Engineer John Ericson initiated a planning study to find an alternative to the swing span. Finding inspiration in the 1894 Tower Bridge in London, England, the municipal engineering staff developed a new movable-bridge design. The type was known as a double-leaf bascule, French for "seesaw." Each movable leaf rotated vertically on a fixed, horizontal steel axle, or trunnion, leaving the entire river channel open for shipping. With the front of each leaf counterbalanced by weights at the rear, relatively small motors could open and close the span. Completed in 1903, the East Division Street Bridge embodied the earliest version of the city-sponsored bascule design selected for construction.

Subjects
Civil Wars
Bridges
Bascule Bridges


Related Names
Roemheld & Gallery
Chicago Department Of Transportation
Ericson, John
Hess, Jeffrey, Historian
Lowe, Jet, Photographer


Collection
Historic American Engineering Record (Library of Congress)

Contents
Photograph caption(s): 
1. PERSPECTIVE SHOWING CROSS-TRUSSES STITCHPLATES, WITH NORTH HALSTED BRIDGE IN BACKGROUND, LOOKING SOUTH FROM DECK.
2. PERSPECTIVE VIEW OF WEST PORTAL, LOOKING EAST FROM NW SIDEWALK.
3. VIEW OF EASTERN PORTAL LOOKING WEST FROM SE SIDEWALK.
4. VIEW OF EAST CANAL PIER FROM WEST; ALSO DECK SUPERSTRUCTURE.
5. VIEW OF COUNTERWEIGHT AT LOWER BUFFER, LOOKING WEST FROM WEST CANAL PIER.
6. DETAIL OF TRUNNION SUPPORT JOURNAL LOOKING WEST FROM WEST CANAL PIER.
7. VIEW OF REDUCTION GEARS. TRUNNION SUPPORT GIRDERS, SIDES OF COUNTERWEIGHTS, WITH LOWER BUFFERS, LOOKING WEST FROM WEST CANAL PIER.
8. VIEW OF DRIVE TRAIN, RACK AND PINION. LOOKING NE FROM WEST GEAR ROOM.


Back to Chicago, Illinois