Live Chat I-77 Community Nearby Traffic US 21 SC 2024-05-24 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to US 21 SC Fort Lawn, SC 14.75 Richburg, SC 16.17 Liberty Hill, SC 16.73 Interstate highway exits close to US 21 SC Exit 48, i77 10.49 Exit 55, i77 10.49 Exit 46, i77 13.44 Interstate highways close to US 21 SC i77 map 10.49 i20 map 46.89 i26 map 56.01 State roads close to US 21 SC SC 200 map 0.55 SC 99 map 1.58 SC 97 map 2.40