US 421 (NC) Intersections with interstate highways 2025-04-16 Roadnow US 421 (NC) Intersections with interstate highways MAP I-77, near Hamptonville, South Dakota map • nearbyMAP I-40, near Winston Salem, South Dakota map • nearbyMAP I-40 map • nearbyMAP I-85, near Greensboro, South Dakota map • nearbyMAP I-40, near Winston Salem, South Dakota map • nearbyMAP I-40, near Winston Salem, South Dakota map • nearby
