Washington - Area of significance: Transportation
| 12th Avenue South Bridge |
| 14th Avenue South Bridge |
| Arboretum Sewer Trestle |
| Aurora Avenue Bridge |
| Bachtold Building-Interurban Depot |
| Baker River Bridge |
| Ballard Avenue Historic District |
| Ballard Bridge |
| Baring Bridge |
| Beverly Railroad Bridge |
| Boeing, William E., House |
| Building No. 105, Boeing Airplane Company |
| Burlington Northern Depot |
| Burrows Island Light Station |
| California Ranch |
| Cape Disappointment Historic District |
| Capital Boulevard Crossing |
| Centralia Union Depot |
| Cheney Interurban Depot |
| Chicago, Milwaukee, St. Paul and Pacific Railroad: South Cle Elum Yard |
| Chicago, Milwaukee, St. Paul & Pacific Railroad-Kittitas Depot |
| City of Cheney Historic District |
| City Ramp Garage |
| City Waterway Bridge |
| Cloverland Garage |
| Columbia City Historic District |
| Columbia River Bridge |
| Columbia River Bridge at Kettle Falls |
| Corbin, Daniel C. and Anna, House |
| Cowen Park Bridge |
| Curlew Bridge |
| Deception Pass |
| Devil's Corner Cliff Walk |
| Donald House |
| Donovan, J. J., House |
| Downtown Bellingham Historic District |
| Downtown Dayton Historic District |
| Downtown Wenatchee Historic District |
| Duckabush River Bridge |
| Dungeness River Bridge |
| East 34th Street Bridge |
| East Downtown Historic District |
| Elwha River Bridge |
| EQUATOR (schooner) |
| Fairfax Bridge |
| Fairhaven Historic District |
| Fairweather-Trevitt House |
| Felts Field Historic District |
| Fire Station No. 25 |
| Fort Vancouver National Historic Site |
| Fremont Bridge |
| Frequency Changing Station |
| Fruit and Produce Row Historic District |
| F Street Bridge |
| Goldsborough Creek Bridge |
| Grand Coulee Bridge |
| Grandview Road-Yellowstone Trail |
| Grays Harbor Light Station |
| Grays River Covered Bridge |
| Great Northern Depot |
| Great Northern Depot |
| Great Northern Passenger Station |
| High Steel Bridge |
| Hill, Samuel, House |
| Hoquiam River Bridge |
| Idaho and Wash. Northern RR Bridge |
| Indian Timothy Memorial Bridge |
| Issaquah Depot |
| Jackson, John R., House |
| Jim Creek Bridge |
| Johnson Bridge |
| Keeler's Korner |
| King Street Station |
| Klipsan Beach Life Saving Station |
| Lake Washington Boulevard |
| Lester Depot |
| Longview Bridge |
| Manning-Rye Covered Bridge |
| McMillin Bridge |
| Middle Fork Nooksack River Bridge |
| Milwaukee Road Bunkhouse |
| Monroe Street Bridge |
| Montlake Bridge |
| Mount Baker Park and Boulevard |
| Mount Baker Ridge Tunnel |
| Mount Rainier National Park |
| Mukilteo Light Station |
| MV KALAKALA (ferry) |
| MV PLOVER (ferry) |
| M. V. VASHON |
| Naval Military Hangar-University Shell House |
| Nine Mile Hydroelectric Power Plant Historic District |
| North 21st Street Bridge |
| North 23rd Street Bridge |
| North Bonneville Archeological District |
| Northern Pacific Office Building |
| Northern Pacific Railway Depot - Pullman |
| Northern Pacific Railway Passenger Depot |
| Northern Pacific Railway Passenger Depot |
| North Hamma Hamma River Bridge |
Data from United States Park Service and Wikidata
