Tower caisson for the Mackinac Bridge (37 of 45)

Much discussion was had regarding how to get these caissons into the lake., Electronic reproduction of photograph.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: Much discussion was had regarding how to get these caissons into the lake.
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1954 (approximate)