Live Chat I-80 Community Nearby Traffic US 421 IN 2024-04-27 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to US 421 IN Valparaiso, IN 13.22 Union Mills, IN 13.87 Chesterton, IN 14.36 Interstate highway exits close to US 421 IN Exit 39, i80 4.68 Exit 39, i90 4.68 Exit 31, i80 12.06 Interstate highways close to US 421 IN i80 map 4.68 i90 map 4.68 i94 map 12.09 State roads close to US 421 IN IN 2 map 0.90 US 6 IN map 1.10 US 421 IN map 1.14