Mobile crane used during Mackinac Bridge construction

A mobile crane was hoisted to the roadway to be used for materials handling in the completion of the roadway, Electronic reproduction of text.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: A mobile crane was hoisted to the roadway to be used for materials handling in the completion of the roadway
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1957 (approximate)