A map of the Yakima Valley with SR 22 highlighted in red
Route information
Maintained by WSDOT
Length
35.84 mi[1] (57.68 km)
Existed
1964–present
Major junctions
West end
I-82 / US 12 near Zillah
Major intersections
US 97 in Toppenish
East end
I-82 / US 12 in Prosser
Location
Country
United States
State
Washington
Counties
Yakima, Benton
Highway system
State highways in Washington
Interstate
US
State
Scenic
Pre-1964
1964 renumbering
Former
← SR 21
→ SR 23
State Route 22 (SR 22) is a 35.84-mile (57.68 km) long state highway spanning Yakima and Benton counties in the US state of Washington. Existing since at least 1937, the highway serves to connect several small communities that have been bypassed by Interstate 82 (I-82) / U.S. Route 12 (US 12). Except for the section through Toppenish and the southeastern bypass of Prosser, the highway is lightly traveled passing mainly through rural farmland. The highway parallels a BNSF Railway line for a majority of its route, with the rail line predating the highway by at least 27 years.
Three digit highway numbers in Washington indicate auxiliary routes of their parent route, giving SR 22 five auxiliary routes: SR 220, SR 221, SR 223, SR 224, and SR 225. SR 220 was decommissioned during the 1991 legislative session, and is no longer maintained by the Washington State Department of Transportation.
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