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Originally published: 2013-04-16 22:08:21
Last modified: 2013-04-16 22:09:27

DOT awards $2 million contract for 61 miles of road improvements

A $2 million contract has been awarded to Maymead Inc. of Mountain City, Tenn., by the N.C. Department of Transportation to apply asphalt surface treatments to 60.8 miles of secondary roads in Caldwell, Watauga and Avery counties.

Work can begin as early as April 29 and be completed by Oct. 1.

Avery County will see 17 sections of secondary roads totaling 15.5 miles improved.

Caldwell County will see 23 sections of secondary roads totaling 17.8 miles improved, while Watauga County will see 32 sections of secondary roads totaling 27.5 miles improved.

Asphalt surface treatments are a cost-effective pavement preservation technique on low-volume roads, according to DOT officials.

The AST is constructed by spraying an asphalt mixture onto the pavement surface, then spreading chips of fine rock into the mixture.

The chips are embedded into the surface by rubber-tired rollers, and the surface is then swept to remove excess chips.

The treatment seals fine cracks in the underlying pavement surface, which reduces pavement deterioration by preventing water from intruding into the base and subgrade of the road. This improves wet weather traction, as well as safety, officials said.

The contract is one of 27 contracts totaling $106.9 million awarded by NCDOT in March for highway and bridge projects across North Carolina.

NCDOT awarded the contracts to the lowest bidders, as required by state law.

The bids received on the projects awarded came in about 5.3 percent, or $5.9 million, below NCDOT estimates.