[Plans for La Salle Street tunnel, bridges over Chicago River and Michigan Canal, and street improvements] [microform] / Chicago Park District, superseding the South Park Commissioners, designed by Strauss Engineering Corporation, revised by Chicago Park District.

Publisher: Chicago : Chicago Park District 1921-1955.

Description: 6 v. : plans.

Subject: Movable bridges Illinois Chicago Designs and plans.
Viaducts Illinois Chicago Designs and plans.
Chicago (Ill.) Buildings, structures, etc.
Loop (Chicago, Ill.).

Notes: Title supplied by cataloger.
Original plans created 1921-1955.

Contents: Outer Drive improvement -- Bascule bridge over Chicago River [and] bascule bridge over Michigan Canal -- Double leaf trunnion bascule bridge at North Wabash Ave. over the Chicago River -- Improvement of Michigan Ave. and Pine Street -- Proposed modification of the City's design of trunnion bascule bridge at Lake Street, Chicago, Ill. -- La Salle St. tunnel, plan for completing dock walls.