| Business | Phone |
| Arf Engineering Inc 210 N 1st St, Lufkin 75901 | (936) 637-6969 |
| Toigo Engineering 602 S Raguet St 209, Lufkin 75904 | (936) 632-8911 |
| Delbert F Richardson Strctrl 3808 S Chestnut St, Lufkin 75901 | (936) 639-9761 |
| Kelley-Frazier Engineers Inc 105 Temple Blvd, Lufkin 75901 | (936) 639-3772 |