Washington State Route 411

State Route 411 marker
State Route 411
Map of Cowlitz County in southwestern Washington with SR 411 highlighted in red
Route information
Auxiliary route of SR 4
Maintained by WSDOT
Length13.48 mi[1] (21.69 km)
Existed1964[2]–present
Major junctions
South end SR 432 in Longview
Major intersections
North end I-5 / SR 504 / I-5 BL in Castle Rock
Location
CountryUnited States
StateWashington
CountiesCowlitz
Highway system
SR 410 SR 432

State Route 411 (SR 411) is a 13.48-mile (21.69 km) state highway located in Cowlitz County in the U.S. state of Washington, serving Longview, Kelso, West Side Highway and Castle Rock. The roadway, which parallels the Cowlitz River and Interstate 5 (I-5), begins at an interchange with SR 432 in Longview and travels north past a spur route, under SR 4 and across the Cowlitz River to become concurrent with I-5 Business and end at an interchange with I-5, I-5 Business and SR 504 in Castle Rock. The road first appeared on a map in 1951 and originally signed as Secondary State Highway 12H (SSH 12H) in 1957, SR 411 was established in 1964 and ran from Kelso to Vader. In 1991, the highway was extended south to SR 432 in Longview, the former route becoming SR 411 Spur, and was shortened to I-5 / I-5 Business / SR 504 in Castle Rock.

  1. ^ Washington State Department of Transportation (2008). "State Highway Log: Planning Report, SR 2 to SR 971" (PDF). Retrieved July 16, 2009.
  2. ^ Washington State Legislature (1970). "RCW 47.17.615: State route No. 411". Retrieved July 16, 2009.

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