The Moose Creek fire near Sutton is nearly half contained at 46%, according to fire information officials Wednesday. Fire managers expect to have the blaze fully contained by the weekend.
The wildfire started Saturday morning, sparked by a burning debris pile. High winds in the Matanuska Valley drove the fire to consume more than 300 acres.
Winds diminished on Tuesday, allowing fire crews to get a start on a line around the fire.
The western flank of the fire also has significant heat remaining that firefighters are trying to extinguish.
About 80 personnel are still working on the blaze.