Moving tower caisson for the Mackinac Bridge (8 of 11)

Dredging the channel that will be used to float the caissons into Lake Huron (2), Electronic reproduction of photograph.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: Dredging the channel that will be used to float the caissons into Lake Huron (2)
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1954 (approximate)