Mono County Tourism is reporting that you cannot currently use Tioga Road (Hwy 120) as a thru-road to get over the Sierra. Hwy 108 (Sonora Pass) and Hwy 89 (Monitor Pass) are alternative options and both are currently open. All entrances and roads into Yosemite are closed except Tioga Pass and Tioga Road
Tioga Road (120 EAST) to Crane Flat, including Tuolumne Meadows, Tenaya Lake, and Olmsted Point, is currently OPEN from the Park’s east entrance.
Big Oak Flat Road is closed west of Crane Flat due to firing operations. No estimated time to reopen. Call 209/372-0200 (press 1 then 1) for current road status updates.
— Yosemite National Park (@YosemiteNPS) August 2, 2018
However, Big Oak Flat Road (120 WEST) west of Crane Flat is now CLOSED due to ongoing fire operations of the Ferguson Fire.
Caltrans are also advising that:
- State Route 168E (Westgard Pass) is closed from White Mountain Road to SR-266 due to damage of the roadway from recent floods
- State Route 168W is open
- State Route 158 is closed only at the mudslide between Silver Lake and Grant Lake. Travel through the loop is unavailable, but areas around the slide are accessible from the junctions at U.S. Hwy 395 and 158N and 158S.
For more highway information visit Caltrans QuickMap site at quickmap.dot.ca.gov or call the road condition hotline at 1-800-427-ROAD (7623).