Live Chat I-70 Community Nearby Traffic MO 340 2024-05-09 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to MO 340 Chesterfield, MO 5.20 Grover, MO 6.46 Valley Park, MO 7.51 Interstate highway exits close to MO 340 Exit 21, i64 5.41 Exit 20, i64 5.50 Exit 19b a, i64 5.76 Interstate highways close to MO 340 i64 map 5.41 i44 map 8.50 i270mo map 8.84 State roads close to MO 340 MO 100 map 0.95 MO 340 map 2.92 MO 141 map 3.65