Moving tower caisson for the Mackinac Bridge (5 of 11)

Dragline digs the channel that will be used to float the tower caisson (first section or cutting section) out onto Lake Huron.  Note that the other tower caisson in in the right background., Electronic reproduction of photograph.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: Dragline digs the channel that will be used to float the tower caisson (first section or cutting section) out onto Lake Huron. Note that the other tower caisson in in the right background.
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1954 (approximate)