Washington State Route 903

State Route 903
A red line indicating SR 903 through Kittitas County.
Route information
Auxiliary route of I-90
Maintained by WSDOT
Length	10.06 mi[1] (16.19 km)
Existed	1964–present
Tourist routes	Swiftwater Corridor Scenic Byway
Major junctions
South end	SR 970 near Cle Elum
North end	Wenatchee National Forest boundary near Ronald
Location
Country	United States
State	Washington
Counties	Kittitas
Highway system
State highways in Washington Interstate US State Scenic Pre-1964 1964 renumbering Former
← SR 902 → SR 904

State Route 903 (SR 903) is a 10.06-mile-long (16.19 km) state highway located entirely in Kittitas County, Washington, United States. The highway links Lake Cle Elum to Roslyn, Cle Elum and SR 970, which provides access to Interstate 90. The highway has existed as a numbered highway since at least 1939, however a highway linking Lake Cle Elum to Cle Elum has existed since 1897. The Washington State Department of Transportation (WSDOT) had previously considered turning control of the highway over to Kittitas County, however this never happened, and WSDOT continues to maintain the highway.