Live Chat I-40 Community Nearby Traffic US 421 NC 2024-05-11 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to US 421 NC Carolina Beach, NC 4.83 Wilmington, NC 11.96 Southport, NC 13.90 Interstate highway exits close to US 421 NC Exit 420b a, i40 32.05 Exit 414, i40 40.09 Exit 412, i40 41.49 Interstate highways close to US 421 NC i40 map 30.96 i95 map 124.79 i20 map 179.53 State roads close to US 421 NC US 421 NC map 0.21 NC 133 map 9.36 NC 211 map 11.03