| Business | Phone |
| Arrington Engineering & Srvyng 137 Business Center Dr, Birmingham 35244 | (205) 985-9315 |
| Ch2m Hill 2112 11th Ave S # 528, Birmingham 35205 | (205) 326-8912 |
| Lucas Engineers Inc 2919 Highway 150, Birmingham 35244 | (205) 560-0630 |
| Flow Tech Environmental Inc 2300 27th St N, Birmingham 35234 | (205) 326-3345 |
| Don Hadden & Assoc Inc 9430 Parkway E # 1, Birmingham 35215 | (205) 836-8585 |
| Douglas Engineering Co 1106 Ford Ave, Birmingham 35217 | (205) 849-8371 |
| Dwc Technologies 437 Industrial Ln, Birmingham 35211 | (205) 822-5205 |
| Dawson Engineering Inc 1500 Urban Center Dr # 415, Birmingham 35242 | (205) 969-0800 |
| Day Wilburn Assoc Inc 3821 Lorna Rd # 116, Birmingham 35244 | (205) 453-0478 |
| Consoer Townsend Envirodyne 3800 Colonnade Pkwy # 400, Birmingham 35243 | (205) 970-1443 |
| Civil Consultants Inc 3528 Vann Rd # 105, Birmingham 35235 | (205) 655-1991 |
| Civil Engineering Assoc Inc 5229 Messer Airport Hwy, Birmingham 35212 | (205) 595-0401 |
| Krebs & Assoc 2100 River Haven Dr, Birmingham 35244 | (205) 987-7411 |