North Carolina awards contract for work on secondary roads
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.
Caldwell County will see 23 sections of secondary roads totaling 17.8 miles improved.
Asphalt surface treatments are used on low-volume roads and involve 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. This 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.