Washington State Route 164

State Route 164
Auburn–Enumclaw Road
SR 164 is highlighted in red.
Route information
Auxiliary route of SR 410
Maintained by WSDOT
Length	14.82 mi[1] (23.85 km)
Existed	1964[2]–present
Major junctions
West end	SR 18 in Auburn
Major intersections	SR 169 in Enumclaw
East end	SR 410 in Enumclaw
Location
Country	United States
State	Washington
County	King
Highway system
State highways in Washington Interstate US State Scenic Pre-1964 1964 renumbering Former
← SR 163 → SR 165

State Route 164 (SR 164) is a 14.82-mile-long (23.85 km) state highway serving southern King County in the U.S. state of Washington. The highway, which connects Auburn and Enumclaw along the White River, begins at an interchange with SR 18 in Auburn and travels southeast to Enumclaw, where it intersects SR 169 and ends at SR 410. SR 164 serves as an alternate route towards Buckley and Chinook Pass, via SR 410, and also passes the Muckleshoot Indian Reservation.

SR 164 was originally part of various state wagon roads between 1913 and 1923, becoming part of State Road 5, later Primary State Highway 5 (PSH 5), and U.S. Route 410 (US 410) in 1926. US 410 was later realigned south in the 1940s and SR 167 was assigned to the former route during the 1964 highway renumbering. In 1969, SR 164 was established and the western terminus was later shortened to an interchange with SR 18 south of Auburn.