U.S. Route 30 (Oregon)

U.S. Highway 30
Route information
Maintained by ODOT
Length	477.02 mi (767.69 km) (using the entire Huntington Highway through Lime)
Major junctions
West end	US 101 in Astoria
	I-405 in Portland I-5 in Portland I-84 from Hood River to Idaho
East end	I-84 / US 30 at the Idaho state line
Location
Counties	Clatsop, Columbia, Multnomah, Hood River, Wasco, Sherman, Gilliam, Morrow, Umatilla, Union, Baker, Malheur
Highway system
United States Numbered Highway System List Special Divided Replaced Oregon Highways Interstate US State Named Scenic ← OR 27 OR 31 →

I-405 in Portland
I-5 in Portland

In the U.S. state of Oregon, U.S. Route 30, a major east–west U.S. Highway, runs from its western terminus in Astoria to the Idaho border east of Ontario. West of Portland, US 30 generally follows the southern shore of the Columbia River; east of Portland the highway has largely been replaced with Interstate 84, though it is signed all the way across the state, and diverges from the I-84 mainline in several towns, as a de facto business route. (The state of Oregon does not sign Interstate business routes; instead it uses the designations US 30 and Oregon Route 99 (along the Interstate 5 corridor) for this purpose.) Out of all the states U.S. Route 30 traverses, it spends the most time in Oregon.