Anchor pier for Mackinac Bridge (4 of 43)

Getting site ready to grout the aggregate  (2), Electronic reproduction of photograph.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: Getting site ready to grout the aggregate (2)
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1954 (approximate)