Road conditions remain treacherous on the highways around Mount Hood Sunday and travelers should use caution or, if possible, delay travel until conditions improve. The problems seen Saturday continue Sunday, with heavy snowfall, spinouts, high winds bringing down trees and blowing snow severely reducing visibility. Before dawn Sunday, a tree fell and knocked down a sign bridge spanning US 26 near OR 35. The fallen structure blocked all lanes of US 26 until ODOT crews hauled it off the road. Travelers between Bend and Portland Sunday should consider avoiding US 26 and use I-84 through the Columbia River Gorge. Travelers on Mount Hood should allow additional travel time and use caution.