Chicago Avenue Bridge, Spanning North Branch of Chicago River at West Chi, Chicago, Cook County, IL

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Historic American Buildings Survey/Historic American Engineering Record/Historic American Landscapes Survey

5 b&w photos
11 data pages
1 photo caption pages

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TITLE:
Chicago Avenue Bridge, Spanning North Branch of Chicago River at West Chi, Chicago, Cook County, IL

CALL NUMBER:
HAER ILL, 16-CHIG, 117-

REPRODUCTION NUMBER:
[See Call Number]

MEDIUM:
Photo(s): 5 (4 x 5 in.)
Data Page(s): 10 plus cover page
Photo Caption Page(s): 1

DATE:
Documentation compiled after 1968.

CREATOR:
Historic American Engineering Record, creator

NOTE:
Survey number HAER IL-144

Unprocessed field note material exists for this structure (N665).

Building/structure dates: 1914 initial construction

Significance: The Chicago Avenue bascule belonged to a set of Chicago city bridges built between 1910 and 1915 that augured in this transition in design from an earlier strictly utilitarian approach to one influenced by aesthetic concerns. Its design also incorporated several innovations that became standard features of the next generation of the "Chicago type" bascule bridge.

SUBJECTS:
ILLINOIS--Cook County--Chicago
bascule bridges
bridge construction

COLLECTION:
Historic American Engineering Record (Library of Congress)

REPOSITORY:
Library of Congress, Prints and Photograph Division, Washington, D.C. 20540 USA

DIGID:
http://hdl.loc.gov/loc.pnp/hhh.il0823

CONTENTS:
Photograph caption(s):
1. COUNTER WEIGHT TRUNION RACK AND PINION AND COUNTERWEIGHT.
2. STRUCTURAL VIEW OF BASCULE LEAF.
3. TRUNION FROM RIVER PIER.
4. DETAIL REDUCTION GEAR.
5. CONTROL ROOM CHICAGO AVENUE BRIDGE.

CONTROL #:
IL0823

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