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Washington State Route 9

State Route 9 marker

State Route 9
SR 9 is highlighted in red.
Route information
Defined by RCW 47.17.040
Maintained by WSDOT
Length: 98.17 mi (157.99 km)
Existed: 1964 – present
Major junctions
South end: SR 522 near Woodinville
  SR 524 near Maltby
US 2 near Snohomish
SR 530 in Arlington
SR 20 in Sedro-Woolley
SR 542 in Deming
North end: BC 11 at Canada–US border in Sumas
Location
Counties: Snohomish, Skagit, Whatcom
Highway system
SR 8 SR 10

State Route 9 Spur
Location: Sumas

State Route 9 marker

State Route 9 (SR 9) is a 98.17-mile (157.99 km) long state highway traversing three counties, Snohomish, Skagit and Whatcom, in the U.S. state of Washington. The highway extends north from an interchange with SR 522 in the vicinity of Woodinville north through Snohomish, Lake Stevens, Arlington, Sedro-Woolley and Nooksack to become British Columbia Highway 11 (BC 11) at the Canada–US border in Sumas. Three other roadways are briefly concurrent with the route: SR 530 in Arlington, SR 20 in Sedro-Woolley and SR 542 near Deming. A spur route in Sumas serves trucks traveling into British Columbia.


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