Live Chat I-55 Community Nearby Traffic Barnhart Post Office (Amenity postoffice) 2024-05-09 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Barnhart Post Office (Amenity Postoffice) Barnhart, MO 1.40 Imperial, MO 4.84 Pevely, MO 7.00 Interstate highway exits close to Barnhart Post Office (Amenity Postoffice) Exit 185, i55 1.31 Exit 186, i55 3.79 Exit 180, i55 6.11 Interstate highways close to Barnhart Post Office (Amenity Postoffice) i55 map 1.31 i270mo map 18.98 i255il map 18.99 State roads close to Barnhart Post Office (Amenity Postoffice) US 67 MO map 1.29 US 61 MO map 2.82 MO 231 map 7.52