Gismo for Mackinac Bridge construction (3 of 3)

Driving H-beams at an angle is a tough job.  The "gismo" made this demanding job go quite well.  These piles were driven to refusal at bedrock and gave the pier "legs" to stand on just as a chair has legs that allow it to sit on the floor., Electronic reproduction of text.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: Driving H-beams at an angle is a tough job. The "gismo" made this demanding job go quite well. These piles were driven to refusal at bedrock and gave the pier "legs" to stand on just as a chair has legs that allow it to sit on the floor.
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1955 (approximate)