As of Saturday, May 7, Caltrans had plowed as far as Tioga Lake, a little over a mile from the Yosemite National Park entrance at Tioga Pass. Highway 120 remained closed at the winter closure gate four miles from Highway 395. Even the cleared portion of the roadway still had areas that were narrow and need additional snow clearing.
http://www.monolake.org/today/2011/05/09/tioga-pass-plowing-photos/