Washington State Route 509

SR 509
Route information
Length	35.17 mi[1] (56.60 km)
Existed	1964[2]–present
Major junctions
South end	I-705 in Tacoma
Major intersections	SR 99 in Federal Way SR 516 in Des Moines SR 518 in Burien
North end	SR 99 in Seattle
Location
Country	United States
State	Washington
Counties	Pierce, King
Highway system
State highways in Washington Interstate US State Scenic Pre-1964 1964 renumbering Former
← SR 508 SR 510 →

State Route 509 (SR 509) is a 35.17-mile-long (56.60 km) state highway in the U.S. state of Washington. The highway goes from Interstate 705 in Tacoma in Pierce County to SR 99 in Seattle in King County.

References

1. Staff (2012). "State Highway Log: Planning Report 2012, SR 2 to SR 971" (PDF). Washington State Department of Transportation. pp. 1549–1563.
2. "47.17.680: State route No. 509". Revised Code of Washington. Washington State Legislature. 1991 [1970].