Stiffening trusses for the Mackinac Bridge (42 of 67)

This photo shows the upper part of the hoisting machinery. The lifting girder with block and tackle is supported by the bridge suspension cables as the stiffening truss section is railed into place and attached to the ropes., Electronic reproduction of text.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: This photo shows the upper part of the hoisting machinery. The lifting girder with block and tackle is supported by the bridge suspension cables as the stiffening truss section is railed into place and attached to the ropes.
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1957 (approximate)