MileCheck

Mountain pass conditions, live

The passes drivers actually plan around — with live DOT cameras and real-time closures for each one, so you can see the snow, chains, and traffic on the summit before you commit to the climb.

I-90 · Washington

Snoqualmie Pass

3,015 ft · ~52 mi east of Seattle

The busiest pass in Washington and the main Seattle–Eastern Washington route. Avalanche closures each winter.

See conditions → US-2 · Washington

Stevens Pass

4,061 ft · ~78 mi NE of Seattle

The higher, snowier northern Cascade crossing, home to the Stevens Pass ski area.

See conditions → I-5 · Oregon

Siskiyou Summit

4,310 ft · south of Ashland

The highest point on all of Interstate 5, and the winter wildcard between Oregon and California.

See conditions → I-5 · California

The Grapevine

4,144 ft · ~40 mi N of Los Angeles

Tejon Pass — the spot most likely to close Southern California's main north–south route in a storm.

See conditions → I-80 · California

Donner Pass

7,056 ft · Sierra Nevada near Truckee

One of the snowiest stretches of interstate in America. Chain controls are the winter norm.

See conditions → I-15 · California

Cajon Pass

~4,190 ft · ~55 mi NE of LA

The LA-to-Las Vegas chokepoint — a wind, snow, and wildfire funnel between the basin and the High Desert.

See conditions → I-80 · Utah

Parleys Summit

~7,020 ft · east of Salt Lake City

Parleys Canyon — the steep, snowy climb out of Salt Lake toward Park City and the Wasatch ski country.

See conditions →

Each pass page pulls live cameras and closures straight from the state DOT (WSDOT, ODOT, Caltrans, UDOT). For the whole route, see the I-5 corridor, every highway camera, or the US road closures map. To track your exact mile marker over any pass hands-free, get the MileCheck app for CarPlay and Android Auto.