| Business | Phone |
| Ballard & Assoc Inc 4530 Barksdale Blvd # F, Bossier City 71112 | (318) 741-3433 |
| Coyle Engineering Co Inc 3925 Benton Rd, Bossier City 71111 | (318) 746-8987 |
| French Engineering Inc 1800 Jimmie Davis Hwy, Bossier City 71112 | (318) 746-2263 |
| Raley & Assoc 2285 Benton Rd B104, Bossier City 71111 | (318) 752-9023 |
| Smith Engineering Co Inc 519 Barksdale Blvd, Bossier City 71111 | (318) 741-1088 |