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What is the stuff that N.C. DOT sprayed on I-40 last week and what was it for?

Jim Ware
StarNews

Q. What is the stuff that N.C. DOT sprayed on I-40 last week and what was it for? If you ride on I-40 north of Wilmington you can see that the road has been treated with something that made it turn color. My husband said he observed it being applied and it took two very strange looking trucks and traffic was diverted into one lane only while the other was being applied? Just curious..if you know or if you can find out!

A. The spraying was just part two of a two-part process the N.C. Department of Transportation was using to refurbish the asphalt pavement along a 9.3-mile stretch of Interstate 40 in New Hanover and Pender Counties.

First, a machine fired steel shot like BBs into the pavement, and then vacuumed off any leftover material. That process made the pavement more coarse for better traction.

Then a liquid asphalt rejuvenator was sprayed on the road surface to extend the life of the pavement.

N.C. DOT’s Ashley Matthews said the project cost $270,000.

RELATED LINKS:

When and how would I-40 be reversed in the event of a major hurricane?

Would the DOT consider adding an I-40 exit at Old Blossom Ferry Road?

User-contributed question by:
Melinda Knoerzer

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