Crane aloft under Mackinac Bridge

With the roadway trusses now complete, a crane was needed to handle materials up on the deck., Electronic reproduction of text.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: With the roadway trusses now complete, a crane was needed to handle materials up on the deck.
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1957 (approximate)