Weight restrictions are in effect for the Wawona Bridge which crosses the South Fork of the Merced River on the Wawona Road , that portion of Highway 41 inside the park. These weight restrictions do not affect buses and recreational vehicles. One way sections exist on the Hetch Hetchy Road , and vehicles exceeding 25 feet in length are permanently restricted. Outside Yosemite Valley, Hodgdon Meadow campground and a portion of the Wawona campground are open all year. All other campgrounds are closed for the season.
Camping is permitted only in designated campgrounds.
It is not possible to make campground reservations before March 15. The National Park Reservation System will begin accepting reservations March 15. Reservations from April 1 through June 14 will be accepted beginning March 15. Reservations through July 14 will be accepted beginning April 15. Reservations through August 14 will be accepted beginning May 15.