Inspection of the Mackinac Bridge (5 of 40)

Engineers inspect the inside of one of the caissons, Electronic reproduction of photograph.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: Engineers inspect the inside of one of the caissons
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1955 (approximate)