1. Northwind Engineering 1705 Marriott Ln, Barnhart, MO 63012 Coordinate: 38.34722,-90.4012 Phone: (636) 467-5434
2. Metropolitan Engineering 7301 Metropolitan Blvd, Barnhart, MO 63012 Coordinate: 38.33524,-90.40053 Phone: (636) 464-3860