About 15 miles of Hwy. 2 between Leavenworth and Coles Corner are closed indefinitely in both directions after rock and mud slides buried the road Thursday afternoon.
Stevens Pass is also closed after a snow slide sruck, covering the road with 15 feet of snow.
Crews planned to clear the snow by 4 p.m., but the avalanche continued burying a snow plow and delaying further action.
Both sections of Hwy. 2 will remain closed with no estimated time for reopening.