Marine equipment for Mackinac Bridge construction (6 of 6)

Floating derricks were used to hoist materials and equipment to many of the work areas., Electronic reproduction of text.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: Floating derricks were used to hoist materials and equipment to many of the work areas.
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1956 (approximate)