Tower caisson for the Mackinac Bridge (45 of 45)

Engineers inspect as crewmen work on the assembly of the tower caisson rings.  They are standing on ring 8-20.  This is ring number eight of the twenty in the finished unit., Electronic reproduction of photograph.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: Engineers inspect as crewmen work on the assembly of the tower caisson rings. They are standing on ring 8-20. This is ring number eight of the twenty in the finished unit.
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1954 (approximate)