Oregon Route 339
Route 339 highlighted in red
Route information
Maintained by ODOT
Length	3.43 mi[1] (5.52 km)
Existed	2003–present
Major junctions
South end	Milton-Freewater city limits
North end	State Line Road near Ferndale
Location
Country	United States
State	Oregon
Highway system
Oregon Highways Interstate US State Named Scenic
← OR 335 → OR 350

Oregon Route 339 (OR 339) is an Oregon state highway running from the Washington state line near Ferndale to Milton-Freewater. OR 339 is known as the Freewater Highway No. 339 (see Oregon highways and routes). It is 3.43 miles (5.52 km) long and runs north–south, entirely within Umatilla County.

OR 339 was established in 2003 as part of Oregon's project to assign route numbers to highways that previously were not assigned.

OR 339 begins at an intersection with State Line Road approximately one and one half miles north of Ferndale, at the Washington state line, and heads south through Ferndale and Sunnyside. Approximately one-half-mile south of Sunnyside, OR 339 intersects OR 332. OR 339 ends at the Milton-Freewater northern city limit.

OR 339 was assigned to the Freewater Highway in 2003.

The entire route is in Umatilla County.

Location	mi[1]	km	Destinations	Notes
Milton-Freewater	3.43	5.52	Begin state maintenance	Continues as Lamb Street
Sunnyside	2.67	4.30	OR 332 / Sunnyside Road – Umapine
Oregon–Washington state line	0.00	0.00	Stateline Road	Continuation into Washington as Old Milton Highway
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

• Oregon Department of Transportation, Descriptions of US and Oregon Routes, https://web.archive.org/web/20051102084300/http://www.oregon.gov/ODOT/HWY/TRAFFIC/TEOS_Publications/PDF/Descriptions_of_US_and_Oregon_Routes.pdf, page 30.