State Route 9 | ||||
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SR 9 is highlighted in red.
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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 |
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North end: | BC 11 at Canada–US border in Sumas | |||
Location | ||||
Counties: | Snohomish, Skagit, Whatcom | |||
Highway system | ||||
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State Route 9 Spur |
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Location: | Sumas |
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.