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Oregon Route 273
Route 273 highlighted in red
Route information
Maintained by ODOT
Length	12.42 mi (19.99 km)
Existed	2003–present
Major junctions
South end	I-5 near Ashland
Major intersections	I-5 near Ashland
North end	OR 66 near Ashland
Location
Country	United States
State	Oregon
Highway system
Oregon Highways Interstate US State Named Scenic
← OR 260 → OR 281

Oregon Route 273 is an Oregon state highway running from OR 66 near Ashland to Interstate 5 near the California state line. OR 273 is known as the Siskiyou Highway No. 273 (see Oregon highways and routes). It is 12.42 miles (19.99 km) long and runs north–south parallel of I-5, entirely within Jackson County.

OR 273 was established in 2003 as part of Oregon's project to assign route numbers to highways that previously were not assigned.

OR 273 begins at an intersection with OR 66 approximately four miles southeast of Ashland and heads south, intersecting with I-5 at I-5 Exit 6 and continuing to I-5 Exit 1, where it ends.

OR 273 is an old section of US 99. OR 273 was assigned to the Siskiyou Highway in 2003.

The entire route is in Jackson County.

Location	mi[1]	km	Destinations	Notes
Cascade–Siskiyou National Monument	12.42	19.99	I-5 south – Yreka	I-5 exit 1 northbound; southbound exit & northbound entrance only.
​	6.70	10.78	I-5 – Ashland, Yreka	I-5 exit 6.
​	0.00	0.00	OR 66 – Ashland, Klamath Falls
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Incomplete access

• 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 23.
• Oregon Department of Transportation, Siskiyou Highway No. 273, ftp://ftp.odot.state.or.us/tdb/trandata/maps/slchart_pdfs/Hwy273_SL_2006.pdf
• West Coast Roads, Interstate 5 Northbound: California to Grants Pass, http://www.aaroads.com/west/oregon/i-005a_or.html

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