Stiffening trusses for the Mackinac Bridge (58 of 67)

The stiffening trusses  are almost complete as they approach mid-span, Electronic reproduction of text.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: The stiffening trusses are almost complete as they approach mid-span
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1957 (approximate)