The southern entrance to Yosemite National Park reopened Sunday for one-way traffic, Caltrans said.
Traffic began flowing again at 5:35 p.m., Cory Burkarth of Caltrans said.
Highway 41 just north of Fish Camp had been closed since Feb. 21 eight-tenths of a mile south of Yosemite at Summerdale Campground.
The road began to collapse after being eroded by water, said officials. The erosion was noticed on Feb. 9, and buses and heavy vehicles were banned from the route on Feb. 14.
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As the road began to shift even more, the roadway was closed to all traffic on Feb. 21.