U.S. Route 410
highway in the United States

U.S. Route 410 (US 410) was a U.S. Highway in Washington and Idaho that existed from 1926 to 1967. It ran 469 miles (755 km) from US 101 in Aberdeen, Washington, to US 95 in Lewiston, Idaho, passing through the cities of Olympia, Tacoma, Yakima, the Tri-Cities, and Walla Walla.
The highway had concurrencies with SR 8, US 99, and US 395. Even though the number indicates that US 410 was a spur of US 10, US 410 never connected with US 10, which is the same case with US 830 and US 30, although like the latter pair, they ran parallel in close proximity. When US 12 was extended into Washington in 1967, US 410 was decommissioned.
Route description
US 410 was a spur of US 10 that traveled between Aberdeen, Washington and Lewiston, Idaho. Much of the route was renumbered to U.S. Route 12.
Washington
US 410 started at an intersection with US 101 in Aberdeen, Washington, the current western terminus of US 12. Then, US 410 went east to Olympia, where it formed a short concurrency with US 101 into Downtown Olympia. Then, US 410 followed US 99 out of Olympia and into Tacoma.
The public source identifies “U.S. Route 410” as highway in the United States. This brief keeps that definition visible, then builds a research path around Route, highway and United.
Why this record matters
A short description can identify a subject without explaining its stakes. For “U.S. Route 410”, the useful work is to connect “highway in the United States” to the records capable of establishing context and consequence.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Apr 30, 2025. The linked authority identifier is Q833215. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1926 and 1967.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “U.S. Route 410”, its source revision and the description used here.
- Expand the search: follow U.S. Route 410 primary sources, U.S. Route 410 archive and Route research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “U.S. Route 410”?
- Which cited source is closest to the event, object or claim?
- Which institution is responsible for the underlying evidence?
Search terms from this dossier
This entry incorporates text from “U.S. Route 410” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.