Q. Why are they scraping up what looks like about 1 or 2 inches of seemingly adequate concrete on the Thomas Rhodes Bridge and replacing it?
A. The work taking place on the Thomas Rhodes Bridge, also known as U.S. 421 over the Cape Fear River, is part of a larger bridge rehabilitation project, said Amanda Glynn, bridge program manager for Division 3 of the N.C. Department of Transportation.
“The portion mentioned references the hydro-demolition of the existing bridge deck. To do this, crews use a high powered water jet to remove all damaged and deteriorated concrete,” Glynn said. “Then, the surface is replaced with a latex modified concrete.”
Glynn said the new surface “is much stronger and will help to protect the structure from water and salt intrusion.”
As part of the work, the bridge expansion joints will also be sealed to protect the structure below deck.
“As a part of this same contract, repairs will be made to substructure concrete components and the structural steel will be cleaned and painted,” Glynn said.
Date posted: October 9, 2013
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