Pretreating Streets: Brine is applied before a storm to keep snow and ice from sticking to the pavement. This salt solution (usually a 23% salt solution derived from rock salt) creates a layer that makes plowing and removal easier.
Sand Spreading: We spread sand on bridges and steep streets when freezing is likely. Once snow or ice is packed down and can’t be plowed, we treat problem spots with a sand mix. Salt and sand are used sparingly to reduce environmental impacts like sediment buildup.
Plowing: When snow accumulates to about two inches, plowing operations begin. Snowplows work best on straight, flat roads, so narrow or winding streets may not be as clear. Ice is hard to remove, and cold temperatures with little sunlight make the process even tougher.
Priority Locations: We concentrate on the higher priority streets until they are passable. Short non-through streets and cul-de-sacs are plowed or treated if time permits. If snow falls quickly, we may have to stop plowing secondary streets and return to primary roadways.
NCDOT State crews also pretreat and plow state-maintained roads in Chapel Hill, including five major roads classified as "NCDOT Primary":
- Marting Luther King Jr. Blvd/Columbia St./US 15-501
- Franklin Street
- Fordham Blvd
- Manning Drive
- South Road/Raleigh Road/Hwy. 54
Schools and Bus Routes: Chapel Hill-Carrboro City Schools (CHCCS) staff clear their own drives and parking lots, while school delays or closures are decided by the districts. We work closely with CHCCS and prioritize roads that provide access to schools.