Highway 41 to Yosemite National Park is closed at Fish Camp, the California Highway Patrol and park officials reported Tuesday.
Caltrans reported the roadway is closed eight-tenths of a mile south of the park at Summerdale Campground. The agency doesn’t project the roadway reopening until March 10.
A washout Feb. 9 eroded the southbound shoulder of the highway, said Caltrans spokesman Cory Burkarth. Since then, Caltrans has had one-way traffic controls in place while agency workers inspected the roadway several times a day.
On Tuesday morning, Caltrans workers noticed the northbound lane was starting to sink and banned tour buses and heavy equipment from the route, Burkarth said. As the road failure expanded, Caltrans decided to close the highway to all traffic.
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Water has eroded the roadbed beneath a portion of Highway 41, causing part of the road to cave in. Caltrans officials say the road will have to be excavated and rebuilt before it can be reopened to traffic.
Highway 41 is one of three routes into Yosemite National Park. The other two routes remain open, but have restrictions due to roadwork or weather-related problems. Highway 120 is open to one-way traffic about 4 miles west of the south junction with Highway 49 from 7 a.m. to 5 p.m., and closed to traffic overnight. Yosemite National Park said storm-related damage prompted the closure.
Highway 140 prohibits vehicles over 45 feet and has one-way controlled traffic 20 miles east of Mariposa due to slide repairs, Caltrans said.