| Business | Phone |
| Allstate Consultants 3312 Lemone Industrial Blvd, Columbia 65201 | (573) 875-8799 |
| Aries 207 Hitt St, Columbia 65201 | (573) 443-4969 |
| Atomic Paint Shop 3334 Brown Station Rd, Columbia 65202 | (573) 474-5522 |
| Brush & Assoc 506 Nichols St, Columbia 65201 | (573) 442-3110 |
| C M Engineering 700 Cherry St # C, Columbia 65201 | (573) 874-9455 |
| Telecom Engineers 1805 Burlington St, Columbia 65202 | (573) 474-1474 |
| Terracon Consulting Engineers 3601 Mojave Ct # A, Columbia 65202 | (573) 214-2677 |
| Trabue Hansen & Hinshaw Inc 1901 Pennsylvania Dr, Columbia 65202 | (573) 814-1568 |
| Shell Engineering & Assoc 2403 W Ash St, Columbia 65203 | (573) 445-0106 |
| Deka Geotechnical 5425 N Highway 763, Columbia 65202 | (573) 443-6084 |
| Drs Consulting 4060 N Highway Pp, Columbia 65202 | (573) 474-2423 |
| Freight Pipeline Co 3212 Woodbine Dr, Columbia 65203 | (573) 442-0080 |
| Joseph Gibbs Pe 1115 Club Meadows Dr, Columbia 65203 | (573) 815-0347 |
| Midwest Engineering & Design 407 Parkade Blvd, Columbia 65202 | (573) 875-0045 |
| J R Hancock Assoc 1150 W Covered Bridge Rd, Columbia 65203 | (573) 443-6056 |