Aggregate placement (4 of 18)

A self-unloading lake freighter deposits aggregate into the caisson of one of the cable anchor piers, Electronic reproduction of photograph.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: A self-unloading lake freighter deposits aggregate into the caisson of one of the cable anchor piers
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1954 (approximate)