| Hultz Bhu Inc | | Tacoma | WA | Engineer | Key Contacts | Active Projects |  .com |
| Anderson Perry and Associates | | Walla Walla | WA | Engineer | Key Contacts | Active Projects | .com |
| Design West Engineering | | Edmonds | WA | Engineer | Key Contacts | Active Projects |  .com |
| Art Anderson Associates, Inc | | Bremerton | WA | Engineer | Key Contacts | Active Projects | .com |
| Knutzen Engineering | | Kennewick | WA | Engineer | Key Contacts | Active Projects |  .com/ |
| Jacobs | | Bellevue | WA | Engineer | Key Contacts | Active Projects | |
| PCS Structural Solutions | | Seattle | WA | Engineer | Key Contacts | Active Projects | .com |
| Harper Houf Peterson Righellis Inc | | Vancouver | WA | Engineer | Key Contacts | Active Projects |  .com/ |
| Gray and Osborne Inc | | Seattle | WA | Engineer | Key Contacts | Active Projects | .net |
| J-U-B Engineers | | Kennewick | WA | Engineer | Key Contacts | Active Projects | .com |
