Alaska Wildfires Stretch Resources Thin

Northbound traffic is backed up on the Parks Highway near Willow, Alaska, on Monday, June 15, 2015, as state troopers allow southbound traffic to move through a wildfire area. The wildfire north of Anchorage shut down a key highway and forced the evacuation of 1,700 structures after it mushroomed in size from just two acres Sunday afternoon to more than 10 square miles by early Monday, officials said. (AP Photo/Mark Thiessen)
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HOUSTON, Alaska (AP) - A wildfire along the main highway between Anchorage and Fairbanks grew by a thousand acres but claimed no new structures as of Tuesday morning.

The Sockeye Fire, named for the street in Willow where the fire began Sunday, has blackened nearly 12 square miles.

The fire is burning on both sides of the Parks Highway in a corridor bordered by the Susitna River on the west and Alaska Railroad tracks on the east.

The fire north of Anchorage has destroyed 25 homes and 10 to 20 other structures.

Alaska Interagency Coordination Center spokesman Tim Mowry says resources are being stretched as firefighters also focus on a 640-acre fire threatening homes on the Kenai Peninsula south of the Sterling Highway.

That fire south of Anchorage has burned six structures and threatens to jump the Kenai River.