Real-time open/closed reports, winter closure schedules, webcams, and Sierra Nevada mountain pass updates across Donner Pass (I-80), Tioga Pass (CA-120), Carson Pass (CA-88), and PCT trail gaps. Verified live via Caltrans and QuickMap.
Open
Highest highway pass in California & Sierra Nevada. Connects Tuolumne Meadows in Yosemite to US-395 at Lee Vining.
Open
Primary trans-Sierra interstate highway and railroad pass connecting Northern California to Nevada through Truckee.
Open
Dramatic high alpine pass with 26% maximum grades across Stanislaus National Forest between Sonora and US-395.
Open
Narrow National Scenic Byway with single-lane mountain stretches linking Arnold to Markleeville and Carson River.
Open
High open ridge road connecting US-395 near Topaz Lake with CA-4 in Markleeville across volcanic basalt peaks.
Open
Major all-weather Sierra highway pass passing Kirkwood Ski Resort, Red Lake, and historic Emigrant Trail markers.
Open
Primary highway corridor connecting Sacramento and the Central Valley directly into South Lake Tahoe at Meyers.
Open
Scenic mountain pass linking US-50 at Meyers with CA-88 in Hope Valley along Upper Truckee River headwaters.
Open
Crucial multi-lane interstate mountain pass connecting Greater Los Angeles with the San Joaquin Valley.
Open
Key freight corridor separating the Sierra Nevada and Transverse Ranges, famous for the Tehachapi Loop railway.
Open
National Historic Landmark pass connecting Ridgecrest in the Mojave Desert to Lake Isabella and Bakersfield.
Open
Major highway artery linking the Santa Clara / Silicon Valley with the Central Valley near San Luis Reservoir.
Open
Deep mountain gap between San Gorgonio and San Jacinto peaks, known for massive wind farms and Coachella access.
Open
Historic mountain pass separating the San Fernando Valley from the Santa Clarita Valley and Antelope Valley.
Open
High elevation paved road crossing the Southern Sierra crest between Kern River Canyon and Pearsonville.
Open
Paved forest road climbing Blackwood Canyon to an iconic Pacific Crest Trail trailhead overlooking Tahoe basin.
Snow / Ice
Highest elevation mountain pass on the entire 2,650-mile Pacific Crest Trail. Sheer ice chutes on north wall.
Snow / Ice
Challenging sharp ridge pass above Charlotte Lake and Rae Lakes with steep exposed talus switchbacks.
Snow / Ice
Remote high Sierra alpine pass featuring the famous stone John Muir Shelter Hut between Evolution & LeConte Basins.
Get live Caltrans R1/R2/R3 chain control alerts, winter snow closure notifications, and PCT high pass condition reports.
Direct verified answers for Sierra Nevada & California pass road conditions, winter gates, and Caltrans chain controls.
Tioga Pass (elevation 9,943 ft / 3,031 m) in Yosemite National Park is OPEN during summer and autumn (late May/June through November). Caltrans and NPS close the pass seasonally in winter due to heavy alpine snowpack.
Sonora Pass (26% steep grade) and Ebbetts Pass are seasonal high Sierra passes open May to November. Caltrans closes both in winter due to extreme snow accumulation and avalanche hazard.
Interstate 80 over Donner Pass (7,239 ft) and US-50 over Echo Summit (7,382 ft) are priority year-round Sierra corridors. Caltrans R1/R2/R3 chain controls are strictly enforced during Sierra snowstorms.
Carson Pass (8,573 ft) is maintained year-round by Caltrans with continuous winter snowplowing. Monitor Pass is closed in winter and reopens each spring.
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