Anchor pier for Mackinac Bridge (2 of 43)

Here can be seen the rebar sticking out of the coarse aggregate and in the center are a grout pipe and a sounding well.  The sounding wells were used to check the depth to the concrete., Electronic reproduction of photograph.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: Here can be seen the rebar sticking out of the coarse aggregate and in the center are a grout pipe and a sounding well. The sounding wells were used to check the depth to the concrete.
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1954 (approximate)