Live Chat I-40 Community Nearby Traffic US 421 NC 2024-05-01 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to US 421 NC Winston Salem, NC 7.80 Clemmons, NC 8.44 Pfafftown, NC 10.99 Interstate highway exits close to US 421 NC Exit 184, i40 7.97 Exit 182, i40 8.55 Exit 188, i40 9.41 Interstate highways close to US 421 NC i40 map 7.97 i77 map 34.74 i85 map 37.41 State roads close to US 421 NC US 421 NC map 0.92 NC 801 map 9.83 NC 67 map 10.57