Tower pier for the Mackinac Bridge (4 of 14)

The tower bolts  extend above the concrete here as workers prepare they for concrete.  The pedestals will top out at 25 feet above the water.  The bolts will be embedded 20 feet into the concrete, Electronic reproduction of text.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: The tower bolts extend above the concrete here as workers prepare they for concrete. The pedestals will top out at 25 feet above the water. The bolts will be embedded 20 feet into the concrete
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1955 (approximate)