Oklahoma State Highway 3
highway in Oklahoma, United States
State Highway 3, also abbreviated as SH-3 or OK-3, is a highway maintained by the U.S. state of Oklahoma. Traveling diagonally through Oklahoma, from the Panhandle to the far southeastern corner of the state, SH-3 is the longest state highway in the Oklahoma road system, at a total length of 615 miles (990 km) via SH-3E (see below).
Route description
In the northwest
SH 3 begins at the Colorado state line 19 mi (31 km) north of Boise City, Oklahoma. At this terminus, it is concurrent with US-287/US-385. It remains concurrent with the two U.S. Routes until reaching Boise City, with US-287 splitting away at an intersection north of the city. US-385/SH-3 then encounter a traffic circle which contains five other highways. After the circle, US-385 splits off, and SH-3, US-56, US-64, and US-412, though US-56 splits off within the next 8 miles (13 km).
In Guymon, US-64 splits off. At Elmwood, US-270 joins US-412, coming from a concurrency with SH-23. SH-3 remains concurrent with US-270 through Watonga.
The public source identifies “Oklahoma State Highway 3” as highway in Oklahoma, United States. This brief keeps that definition visible, then builds a research path around Oklahoma, State and Highway.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Sep 6, 2026. The linked authority identifier is Q2171801. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank.
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This entry incorporates text from “Oklahoma State Highway 3” 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.