| Business | Phone |
| Barge Waggoner Sumner & Cannon 200 Clinton Ave W # 800, Huntsville 35801 | (256) 533-1561 |
| Busbin Engineering & Surveying 924 Meridian St N, Huntsville 35801 | (256) 533-1099 |
| Dawson Engineering Inc 500 Boulevard South Sw # 204, Huntsville 35802 | (256) 650-0800 |
| Florence & Hutcheson Inc 4835 University Sq # 9, Huntsville 35816 | (256) 890-0321 |
| G W Jones & Sons Inc 401 Franklin St Se, Huntsville 35801 | (256) 533-3311 |
| Garver Engineers 218 Holmes Ave Ne, Huntsville 35801 | (256) 534-5512 |
| Johnson & Assoc 1218 Church St Nw # B, Huntsville 35801 | (256) 533-7331 |
| Nash Engineering 200 Clinton Ave W # 805, Huntsville 35801 | (256) 533-2038 |
| Smith Engineering 8624 Memorial Pkwy Sw, Huntsville 35802 | (256) 539-9426 |
| Worley & Assoc Huntsville 35801 | (256) 536-2488 |
| Zapata Engineering 4801 University Sq # 29, Huntsville 35816 | (256) 726-0345 |