User:Compdude/Draft:Washington highways
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This is a draft of content to use on the Washington page as replacement for the minimal road tagging guidance. It is based on discussions on Talk-us: US Trunk road tagging and the OSMUS Slack. Feel free to discuss or help edit this content prior to any inclusion on Washington.
This page describes Washington-specific determinations for implementing US highway classification values.
Important regional centers
The following cities in and around Washington are considered important regional centers:
- Seattle, WA
- Tacoma, WA
- Everett, WA
- Spokane, WA
- Olympia, WA
- Tri-Cities, WA (Pasco, Kennewick, and Richland)
- Yakima, WA
- Moses Lake, WA
- Aberdeen, WA
- Longview, WA
- Bremerton, WA
- Walla Walla, WA
- Lewiston, ID/Clarkston, WA
- Centralia/Chehalis, WA
- Coeur d'Alene, ID
- Vancouver, BC
- Kelowna, BC
- Portland, OR
- Astoria, OR
- The Dalles, OR
- Sandpoint, ID
Trunk roads
The following routings are the principal routes between pairs of important population centers, and not serviced by highway=motorway, and thus should be tagged highway=trunk.
| From | To | Trunk routing |
|---|---|---|
| Everett, WA | Spokane, WA | US 2 |
| Aberdeen, WA | Olympia, WA | US 12/ WA 8/ US 101 |
| Aberdeen, WA | Centralia/Chehalis, WA | US 12 |
| Centralia/Chehalis, WA | Yakima, WA | US 12 |
| Tri-Cities, WA | Walla Walla, WA | US 12 |
| Walla Walla, WA | Clarkston, WA/Lewiston, ID | US 12 |
| Tri-Cities, WA | Spokane, WA | US 395 |
| Clarkston, WA/Lewiston, ID | Spokane, WA | US 95/ US 195 |
| Astoria, OR | Aberdeen, WA | US 101/ WA 401/ WA 4/ US 101 |
| Aberdeen, WA | Port Angeles, WA | US 101 |
| Seattle, WA | Port Angeles, WA | I-5/ WA 104/ US 101 |
| Port Angeles, WA | Olympia, WA | US 101 |
| Tacoma, WA | Bremerton, WA | WA 16/ WA 3 |
| Bremerton, WA | Port Angeles, WA | WA 3/ WA 104/ US 101 |
| Seattle, WA | Wenatchee, WA | I-90/ WA 970/ US 97/ US 2 |
| Tacoma, WA | Yakima, WA | I-5/ WA 18/ I-90/ I-82 |
| The Dalles, OR | Yakima, WA | I-84/ US 97 |
| Yakima, WA | Wenatchee, WA | I-82/ I-90/ US 97/ US 2 |
| Wenatchee, WA | Kelowna, BC | US 2/ US 97/ BC 97 |
| Astoria, OR | Longview, WA | US 30/ WA 433/ WA 432 |
| Wenatchee, WA | Moses Lake, WA | WA 28/ WA 281 |
| Spokane, WA | Sandpoint, ID | US 2 |