UPDATE: More than 50 structures lost; McKinley fire jumps Parks Highway, One lane open with help from pilot car

Alaska State Troopers say one lane of the Parks Highway is back open.

Alaska Department of Transportation says traffic is moving slowly between milepost 71 to milepost 99 with the help of a pilot car.

Authorities say drivers should expect significant delays and if possible they should avoid the area.

For the latest traffic information,

Fire crews battling the McKinley fire faced some of the worst firefighting conditions for the second day in a row Sunday.