Spring at pier no. 20 of the Mackinac Bridge (2 of 4)

Concrete work was finished on the tower foundations in the spring of 1955.  A new record was set for underwater consolidation of concrete work with the placing of 103,000 yards of concrete., Electronic reproduction of photograph.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: Concrete work was finished on the tower foundations in the spring of 1955. A new record was set for underwater consolidation of concrete work with the placing of 103,000 yards of concrete.
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1955 (approximate)