| Business | Phone |
| Alliance Consulting Engineers 760 W 200 N 8, Logan 84321 | (435) 755-5121 |
| C A Cartwright Engineers 2005 N 600 W D, Logan 84321 | (435) 753-2850 |
| Cache-Landmark Engineering 666 N Main St, Logan 84321 | (435) 713-0099 |
| Jub Engineers Inc 40 W Cache Valley Blvd 3b, Logan 84341 | (435) 713-9514 |
| Triton Engineers Inc 80 N 1300 E, Logan 84321 | (435) 755-0565 |