Stiffening trusses for the Mackinac Bridge (18 of 67)

At mid-span, the last of the stiffening trusses are about to go into place as seen from water level., Electronic reproduction of text.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: At mid-span, the last of the stiffening trusses are about to go into place as seen from water level.
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1957 (approximate)