Posted in Web Campground Reservations – Yosemite National Park (U.S. National Park … Tioga Road (continuation of Highway 120 through the park), Glacier Point Road, and Mariposa Grove Road are closed for the season due to snow. Call 209/372-0200 (then 1, 1) to check road conditions. More View conditions on map https://www.nps.gov/yose/planyourvisit/camping.htm