Washington State Route 26

State Route 26
SR 26 highlighted in red
Route information
Maintained by WSDOT
Length	133.61 mi[1] (215.02 km)
Existed	1964[2]–present
Tourist routes	Palouse Scenic Byway
Major junctions
West end	I-90 near Vantage
Major intersections	SR 24 in Othello SR 17 in Othello US 395 near Hatton SR 260 / SR 261 in Washtucna
East end	US 195 in Colfax
Location
Country	United States
State	Washington
Counties	Grant, Adams, Whitman
Highway system
State highways in Washington Interstate US State Scenic Pre-1964 1964 renumbering Former
← SR 25 → SR 27

State Route 26 (SR 26) is a state highway in central Washington in the United States. It travels east–west for 114 miles (183 km) from Interstate 90 (I-90) near Vantage to U.S. Route 195 (US 195) in Colfax. The highway intersects several major north–south highways, including SR 24, SR 17, US 395, and SR 261 before ending in Colfax. The route serves as a connector between Vantage, Royal City, Othello, Washtucna, La Crosse, and Colfax.

The easternmost section of SR 26, between Dusty and Colfax was formerly part of the Inland Empire Highway and US 295 for most of the early 20th century. The rest of modern SR 26 was added to the state highway system in 1937 and 1951 as Secondary State Highway 11B (SSH 11B) from Washtucna to Dusty and SSH 7C from Vantage to Washtucna, respectively. The two highways were combined to form SR 26 in the 1964 state highway renumbering, but several sections of the highway were not completed until the 1970s. SR 26 initially terminated at Dusty, but was extended to Colfax over SR 127 in 1979.