| Business | Phone |
| Ancira Engineering Svc Inc 1010 Santa Maria Ave, Laredo 78040 | (956) 724-3521 |
| Arcadis 5219 Mcpherson Rd 426, Laredo 78041 | (956) 728-7292 |
| Lamont Engineering 7615 N Bartlett Ave, Laredo 78041 | (956) 723-4476 |
| Slay Engineering Co 9901 Mcpherson Rd, Laredo 78045 | (956) 791-0405 |