Gov. Bill Walker declared a state disaster Tuesday afternoon for flooding on the Dalton Highway near Alaska's North Slope that has shut down the sole road to Prudhoe Bay.
For more than three weeks, crews have been battling overflow from the Sagavanirktok River, commonly known as the Sag River, which runs parallel to the Dalton Highway as it approaches the North Slope.
Conditions on the road have continued to deteriorate. The Dalton Highway "is miles of an ice sheet now," said Meadow Bailey, Alaska Department of Transportation and Public Facilities spokesperson.
In some locations, ice on the road is more than 2 feet deep, Bailey said. Overflow from the Sag River also continues to run over the road.