Aggregate placement (8 of 18)

Aggregate placed into anchor pier caisson by a self-unloading Great Lakes Steamer., Electronic reproduction of photograph.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: Aggregate placed into anchor pier caisson by a self-unloading Great Lakes Steamer.
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1954 (approximate)