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SR 20 Both Directions - The North Cascades Highway closed for the season at 4 p.m. Wednesday, November 28 between Milepost 134 at Diablo Overlook, east of Newhalem and Milepost 171 at Silver Star Creek west of Mazama. The highway typically reopens in early May. Last Updated: 11/28/2018 4:02 PM More Info
From milepost 134 to milepost 171