| Company | Category | Area | Address | Web | E-mail | Contact person |
| TRANSPORTATION WASHINGTON DEPT | Regulation/administrative Tran | Washington | PO BOX 125, GOLDENDALE, Klickitat, Washington, 98620-0125, USA |
- |
- |
Bud Wall |
| TRANSPORTATION-MATERIALS LAB | Government Offices-State | Washington | 2714 N MAYFAIR ST, SPOKANE, Spokane, Washington, 99207-2050, USA |
- |
- |
Ed Mcallister |
| TRANSPORTATION-MATERIALS LAB | Government Offices-State | Washington | 2714 N MAYFAIR ST, SPOKANE, Spokane, Washington, 99207-2050, USA |
- |
- |
Ed Mcallister |
| TRANSPORTATION-MATERIALS LAB | Gov'T Offices-St | Washington | 2714 N MAYFAIR ST, SPOKANE, Spokane, Washington, 99207-2050, USA |
- |
- |
- |
| TRANSPORTATION-MATERIALS LAB | Gov'T Offices-St | Washington | 2714 N MAYFAIR ST, SPOKANE, Spokane, Washington, 99207-2050, USA |
- |
- |
- |
