| Business | Phone |
| 175 Citation Court 175 Citation Ct, Birmingham 35209 | (205) 332-6833 |
| Alabama Engineering Co Inc 2 Office Park Cir # 11, Birmingham 35223 | (205) 803-2161 |
| Armstrong Engineering 25 W Oxmoor Rd, Birmingham 35209 | (205) 290-0829 |
| Boswell Engineering 301 10th Ct N, Birmingham 35204 | (205) 327-7321 |
| Britt Engineering 937 Rockford Rd, Birmingham 35222 | (205) 592-7732 |
| David Thurlow 15 Office Park Cir, Birmingham 35223 | (205) 870-3013 |
| Insite Engineering Llc 3100 Lorna Rd # 133, Birmingham 35216 | (205) 824-6488 |