Washington State Route 243

State Route 243
State Route 243
	A map of Grant County with SR 243 highlighted in red
Route information
	Auxiliary route of SR 24
	Maintained by WSDOT
Length	28.23 mi (45.43 km)
Existed	1964–present
Major junctions
South end	SR 24 near Desert Aire
North end	SR 26 near Vantage
Location
Country	United States
State	Washington
Counties	Grant
Highway system
	State highways in Washington; Interstate; US; State; Scenic; Pre-1964; 1964 renumbering; Former;

State Route 243 (SR 243) is a state highway in Grant County, Washington. It travels north–south along the Columbia River for 28 miles (45 km), connecting SR 24 at the Vernita Bridge to SR 26 near Vantage. The highway travels through a predominantly rural and desert area, serving two hydroelectric dams and the communities of Desert Aire, Mattawa, and Beverly.

The highway was established as a branch of Secondary State Highway 7C (SSH 7C) in 1957, to be built uphill from the reservoir of the new Priest Rapids Dam. Construction was completed in the early 1960s and it was re-designated as SR 243 during the 1964 state highway renumbering.

^ Multimodal Planning Division (January 3, 2018). State Highway Log Planning Report 2017, SR 2 to SR 971 (PDF) (Report). Washington State Department of Transportation. pp. 1206–1208. Retrieved August 24, 2018.