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The year-round passes that are most likely to temporarily close for winter weather are: Mount Rose Summit, NV 431; Carson Pass, CA 88; Echo Summit, US 50; Donner Summit, I-80; Carson Pass and Echo Summit both include sections where the road traverses a steep hillside that is prone to avalanches.
See our Road Closures page to find out which Sierra passes are usually open, closed in winter, and when things change. Things can change suddenly in the mountains. Check the Caltrans QuickMap for the current conditions. Share this: Our interactive map of all 22 major Sierra Nevada mountain passes.
Caltrans closes the passes when winter arrives in earnest and continued attempts to keep the roads open would be futile. This typically happens in November or December. But it could be as early as October.
See Caltrans QuickMap for a real-time, zoom-able California map of current traffic conditions including lane closures, CHP incidents, changeable message signs, chain controls, video cameras and more. Preparation is Key for Winter Driving Conditions.
Dec 24, 2019 · winds through Tejon Pass at the southern end of the San Joaquin Valley. Full closures of I-5, due to snow and icy conditions, occur during the winter months an average of 3-5 times between October and April. Typically, closures last from 4-6 hours, however some may last longer than 24 hours.
Caltrans District 10 manages three passes in the Central Sierra that are closed during winter and re-opened in the spring. These passes are: Ebbetts Pass (State Route 4) in Alpine County, Sonora Pass (State Route 108) in Tuolumne County, and Monitor Pass (State Route 89) in Alpine County.
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Dec 16, 2021 · Several Sierra Nevada passes and other high-elevation roads were closed for the winter as of 7 a.m. Thursday, Dec. 16. An announcement by the California Department of Transportation noted...