| Business | Phone |
| Certified Engineering Inc 7266 Tom Dr # 202, Baton Rouge 70806 | (225) 925-9748 |
| Hebert Engineering 12500 Old Hammond Hwy, Baton Rouge 70816 | (225) 273-8180 |
| Marrero Couvillion & Assoc 8178 Gsri Ave, Baton Rouge 70820 | (225) 408-8249 |
| Felix F Planche Pe 11947 Parkmount Blvd, Baton Rouge 70816 | (225) 291-5132 |
| Urs Corp 10550 Airline Hwy, Baton Rouge 70816 | (225) 293-6600 |
| Scientific Testing Labs Inc 2703 Weller Ave, Baton Rouge 70805 | (225) 356-2740 |