Vessels used during Mackinac Bridge construction (10 of 14)

One of the many tug boats working at the bridge performing a task., Electronic reproduction of text.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: One of the many tug boats working at the bridge performing a task.
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1957 (approximate)