YOSEMITE NATIONAL PARK, Calif - A portion of Tioga Road impacted by a wildfire in Yosemite National Park will be closed beginning Wednesday while firefighters clear brush to slow the spread of the inferno.
Park officials expect the normally busy route will be closed through Labor Day Weekend.
Superintendent Don Neubacher says park officials decided to close the road that leads to the park's eastern entrance to improve safety for firefighters.
Park officials are working to get control of a 288-square-mile wildfire burning along the park's northern border.
Containment increased to 20 percent on Tuesday but the number of destroyed structures rose to 101. Some 4,500 structures remained threatened.
The fire started Aug. 17 in the Stanislaus National Forest and quickly spread into the park.
Meanwhile, the giant wildfire has not only destroyed buildings and threatened water supplies, electricity and sequoias, it has also unleashed a smoky haze that has worsened air quality more than 100 miles away.
The plume from the Rim Fire in California triggered emergency warnings along parts of the eastern Sierra near Carson City, Nev.
School children were kept inside Tuesday for the second time in a week, people went to hospitals complaining of eye and throat irritation and officials urged people for the first time to avoid all physical activity outdoors.
The air quality index briefly surpassed the rare "hazardous" level east of Lake Tahoe before improving Tuesday afternoon.
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