| Business | Phone |
| American Civil Engineering 812 W Dallas St, Conroe 77301 | (936) 760-3260 |
| Bleyl & Assoc 2251 N Loop 336 W B, Conroe 77304 | (936) 441-7833 |
| Carter & Burgess Inc 100 Commercial Cir, Conroe 77304 | (936) 756-4641 |
| Jns Consulting Engineers Inc 2040 N Loop 336 W, Conroe 77304 | (936) 441-1850 |
| D A Vogt Engineering Inc 110 Vision Park Blvd 200, Conroe 77384 | (936) 273-9980 |