Moving tower caisson for the Mackinac Bridge (3 of 11)

One of the completed tower caisson cutting (1st) section sits at the Alpena fabrication site while machinery digs a channel out to Lake Huron so the caisson can be towed by tug to the straits, 990 miles away, Electronic reproduction of photograph.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: One of the completed tower caisson cutting (1st) section sits at the Alpena fabrication site while machinery digs a channel out to Lake Huron so the caisson can be towed by tug to the straits, 990 miles away
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1954 (approximate)