Concrete for Mackinac Bridge (5 of 6)

The concrete keep getting higher and higher on its way to the elevation of ten stories., Electronic reproduction of photograph.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: The concrete keep getting higher and higher on its way to the elevation of ten stories.
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1955 (approximate)