Washington State Route 215

SR 215 begins as 2nd Avenue in Okanogan at an intersection with SR 20, which turns southeast to cross the Okanogan River.[3][4] 2nd Avenue crosses over Salmon Creek before it empties into the Okanogan River at Alma Park.[5][6] The highway continues northeast and passes the Okanogan Community Library before leaving Okanogan for Omak,[7] becoming Elmway.[1][8] SR 215 passes the Omak Memorial Cemetery and Mid-Valley Hospital before becoming Okoma Drive and entering Downtown Omak.[1][9][10] The roadway turns east onto 4th Avenue and back north onto Main Street, passing the local post office,[11] before intersecting Omak Avenue, signed as SR 155 Spur.[1] Main Street continues north and passes the Omak campus of Wenatchee Valley College,[12] before turning east onto Riverside Drive and ending at an intersection with SR 20 and US 97.[1][13]

Every year the Washington State Department of Transportation (WSDOT) conducts a series of surveys on its highways in the state to measure traffic volume. This is expressed in terms of average annual daily traffic (AADT), which is a measure of traffic volume for any average day of the year. In 2011, WSDOT calculated that between 4,200 and 13,000 vehicles per day used the highway, mostly in Downtown Omak.[14]

A north–south road connecting Okanogan to Omak along the Okanogan River has existed since 1903,[15] and was designated as part of State Road 10 in 1905.[16][17] The highway was named the Chelan and Okanogan Highway in 1919 and became part of US 97 in 1926 during the creation of the United States Numbered Highways,[18][19] and became PSH 10 during the creation of the Primary and secondary state highways in 1937.[20][21] Beginning in 1962, a bypass of Omak was constructed on the east side of the Okanogan River,[22][23][24] and US 97 was re-routed onto it in 1967.[25][26][27] SSH 16A was created using the old alignment of US 97 and PSH 10, extending from PSH 16 in Okanogan to US 97 and PSH 10 in Omak.[27] After the 1964 highway renumbering, SSH 16A became part of SR 20 and was signed into law in 1970,[27][28] however SR 20 was extended east along US 97 and the old route became SR 215 in 1973.[2] No major revisions to the route of the highway has occurred since 1973.[29]

The entire highway is in Okanogan County.

Location	mi[1]	km	Destinations	Notes
Okanogan	0.00	0.00	SR 20 west (2nd Avenue) – Twisp, Burlington
Omak	5.05	8.13	SR 155 Spur east (Omak Avenue) to SR 155 – Grand Coulee Dam	Former SR 155
	6.24	10.04	US 97 / SR 20 east – Tonasket
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

• Highways of Washington State