Tower caisson damage

Repairs being make to the caisson after it was damaged while trying to launch it., Electronic reproduction of photograph.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: Repairs being make to the caisson after it was damaged while trying to launch it.
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1954 (approximate)