Concrete for Mackinac Bridge (1 of 6)

Crews getting equipment ready for batching and placing concrete, Electronic reproduction of photograph.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: Crews getting equipment ready for batching and placing concrete
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1954 (approximate)