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HIGH IMPACT
SR 20 Both Directions - SR 20, the NORTH CASCADES HIGHWAY IS CLOSED FOR THE SEASON FROM MILEPOST 171 at the Silver Star (Creek) Gate, 13 miles west of Mazama TO MILEPOST 134 AT DIABLO GATE 14 miles east of Newhalem. Clearing work began March 16 and should be complete by mid April. Last Updated: 3/20/2015 3:59 PM More Info
From milepost 178 to milepost 134