| Business | Phone |
| Tri Core Aea 6921 Mariner Dr, Racine 53406 | (262) 886-3630 |
| Pruess Engineering Assoc Inc 6226 Bankers Rd, Racine 53403 | (262) 884-9408 |
| Redmon Engineering Co 3306 Rosewood Ln, Racine 53404 | (262) 681-0100 |
| River's Bend Engineering Inc 1139 N Sunnyslope Dr, Racine 53406 | (262) 886-3882 |
| North America Pipe Design Racine 53402 | (262) 681-7700 |
| Novus Technical Svc Racine 53403 | (262) 638-8379 |