Mudslide SB 17 at Sugarloaf Rd Update 2:30 pm 2/13/19: The southbound lanes of Highway 17 are closed at Sugarloaf Road due to mud on the roadway. Motorists are using the turn out to by-pass this closed area. Caltrans will close the northbound No. 1 (left Lane) at Sugarloaf Road to ...