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SR 4 - Four Miles East of Cathlamet - Rock Scaling Closure Schedule

Plan ahead and avoid long delays! 

Starting May 16, State Route 4 will be closed for 45-minute intervals near Cathlamet (milepost 39.6) for rock scaling activities. The closures will take place Monday through Thursday while crews remove loose rock, soil, trees and other debris from the slope above the roadway. The closures will continue through early June.

  • Before 8:15 a.m. - OPEN
  • 8:15 a.m. to 9 a.m. - CLOSED
  • 9 a.m. to 9:15 a.m. - OPEN
  • 9:15 a.m. to 10 a.m. - CLOSED
  • 10 a.m. to 10:15 a.m. - OPEN
  • 10:15 a.m. to 11 a.m. - CLOSED
  • 11 a.m. to 11:15 a.m. - OPEN
  • 11:15 a.m. to 12 p.m. - CLOSED
  • 12 p.m. to 12:15 p.m. - OPEN
  • 12:15 p.m. to 1 p.m. - CLOSED
  • 1 p.m. to 1:15 p.m. - OPEN
  • 1:15 p.m. to 2 p.m. - CLOSED
  • 2 p.m. to 2:15 p.m. - OPEN
  • 2:15 p.m. to 3 p.m. - CLOSED
  • 3 p.m. to 3:15 p.m. - OPEN
  • 3:15 p.m. to 4 p.m. - CLOSED
  • 4 p.m. to 4:15 p.m. – OPEN
  • 4:15 p.m. to 5 p.m. – CLOSED
  • 5 p.m. to 8:15 a.m. - OPEN

SR 4 will be fully open to traffic Friday through Sunday.