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Bids Invited for ‘Big Mac’ Painting

Thursday, November 29, 2012

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The Michigan Department of Transportation is accepting bids to clean and recoat structural steel surfaces on the Mackinac Bridge.

The 26,371-foot-long suspension bridge on Interstate 75 connects Mackinaw City and St. Ignace, MI, over the Straits of Mackinac.

Bids are due Dec. 7.

Scope of Work

The project involves abrasive blast-cleaning and recoating 110,500 square yards of structural steel from Pier 9 to Pier 18 northerly on the bridge, known locally as “Big Mac.” A cost estimate for the work is not being released.

Mackinac Bridge
www.mackinacbridge.org

Michigan's five-mile-long Mackinac Bridge is the third-largest suspension bridge in the world.

The steel will be abrasive blast-cleaned to a Near-White finish (SSPC-SP 10) and recoated with a zinc-rich primer, an epoxy intermediate, and a polyurethane finish.

A two-year bridge painting warranty will be required, and contractors must be SSPC-QP 1 and QP 2 certified.

The owner intends to advertise a separate contract for bridge coating inspection services. SSPC and/or NACE certifications are preferred, but not mandatory.

About the Bridge

The five-mile-long structure was designed by Dr. David Steinman, an engineer who also conceptualized many other well-known structures worldwide. The American Bridge Division of U.S. Steel Corp. was awarded a $44,532,900 contract to build the superstructure, which includes a 3,800-foot-long steel main span and two 552-foot-tall towers.

Construction began in May 1954, and the bridge opened to traffic Nov. 1, 1957. On June 25, 1998, the bridge celebrated its 100 millionth crossing.

Today, Big Mac is the third-longest suspension bridge in the world.

Reported by Paint BidTracker, a construction reporting service devoted to identifying contracting opportunities for the coatings community.

   

Tagged categories: Abrasive blasting; Bridges; Coating inspection; Government contracts; Industrial Contractors; Paint BidTracker; Painting Contractor; SSPC; SSPC-QP 1; SSPC-QP 2; Surface preparation

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