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Concrete Disbonds on New ‘Stan Span’

Wednesday, June 11, 2014

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A four-month-old, $667 million bridge over the Mississippi River has already undergone repairs, after several areas failed to bond to the deck panel.

According to media reports, the Missouri Department of Transportation was performing permanent repairs in May on the Stan Musial Veterans Memorial Bridge when crews noticed a spot where the two-inch concrete overlay wasn't bonding with the 10-inch concrete underdeck.

MoDOT project director Randy Hitt told local CBS affiliate KMOX that it's not unusual for a bridge of that size to have a few issues.

Stan Musial Veterans Memorial Bridge
Images: Facebook / New Mississippi River Bridge

Crews had to resurface disbonded concrete on about eight square feet of the Stan Musial Veterans Memorial Bridge. The $667 million bridge opened in February.

The 1,500-foot-long cable-stayed bridge opened Feb. 9. The bridge carries two lanes of I-70 in each direction over the Mississippi River between Missouri and Illinois.

'Minor' Repairs

The sections of disbonded concrete accounted for "maybe eight square feet out of roughly 30,000 square feet of deck, so in the grand scheme of things, it's very minor," Hitt told KMOX.

"There's always going to be some issue like an oil spill or it may not have been cleaned perfectly," Hitt said.

Workers discovered the issue while working on the bridge May 19 and 20. The concrete was removed and replaced over a two-night period, according to the St. Louis Post-Dispatch.

According to Hitt, the contractor will be responsible for paying for the repairs performed by MoDOT.

The concrete/latex mix used on the surface was designed for quick repairs and resurfacing, and the surface is designed to last "decades" before needing a complete resurfacing, KMOX reported.

Fight for the Naming Right

The Stan Musial Veterans Memorial Bridge was named for both St. Louis Cardinals icon Stan "The Man" Musial and the nation's veterans.

The 1,500-foot-long cable-stayed bridge was named for St. Louis Cardinals legend Stan Musial and the nation's veterans.

Musial, a career-long Cardinal and a legend in St. Louis, MO, died in January 2013. Weeks later, a proposal to name the new bridge in his honor was well underway in the state Legislature. That measure would have named part of the bridge for Musial and part for Andy Gammon, 35, a local construction worker who fell to his death on the project.

The plan was derailed in Illinois, however, where the state House voted 109-0 to name the span the Veterans Memorial Bridge.

In the end, the decision fell to Congress, because the project is receiving $240 million in federal funds.

   

Tagged categories: Bridges; Concrete defects; Department of Transportation (DOT); Disbondment

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