NCDOT Spring Litter Sweep underway along local roadways 3.1 million pounds already collected since January 1 Spring litter sweep to clear trash from N.C. roadsides By David Whisenant | April 15, 2021 at 3:19 PM EDT - Updated April 15 at 6:41 PM CHARLOTTE, N.C. (WBTV) - If youâre tired of seeing trash on the highway or on the roads where you live, you may be getting some relief this month. The NCDOT is doing the Spring Litter Sweep between now and April 24. State crews are out cleaning, and so are volunteer groups, but the state says it needs more help from volunteers. To help keep trash off North Carolina roadways, the state enlisted the help of native son and country music star Luke Combs.