View from the water of the Mackinac Bridge (4 of 4)

This view of the installed stiffening or suspended roadway trusses is from a boat, Electronic reproduction of text.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: This view of the installed stiffening or suspended roadway trusses is from a boat
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1957 (approximate)