Moving tower caisson for the Mackinac Bridge (10 of 11)

This ripper was used to loosen up materials under the beach so the draglines could dig the channel that was used to float the caissons into Lake Huron., Electronic reproduction of photograph.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: This ripper was used to loosen up materials under the beach so the draglines could dig the channel that was used to float the caissons into Lake Huron.
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1954 (approximate)