The Bull Flat Fire, 20 miles northwest of Cibecue, is 50 percent contained, the fire information officer said.
The fire is burning on lands administered by the Fort Apache Agency and the Tonto National Forest. The fire, believed to have been started by lightning May 10, has charred 1,900 acres.
Forestry officials estimate losses in the fire at $1.5 million so far.
About 328 personnel are fighting the fire, the Eastern Arizona Incident Management Team said.
Two air tankers, seven engines and two bulldozers are helping firefighters battle the blaze which is mainly burning in brush, grass and heavy dead and down fuel left over from the now 10-year-old Chediski Fire.
No structures are threatened, and no evacuations have taken place.
The temporary closure boundary starts at the intersection of Forest Road (FR) 512 and FR 33 and follows FR 512 south to its intersection with FR 358, then following FR 358 east to its intersection with the forest boundary.
The boundary then follows the forest boundary north and turns directly east to the intersection of FR 34 and FR 188, then follows FR 34 north to its intersection with FR 33 and follows FR 33 west to its intersection with FR 512.
Residents and visitors in the Heber-Overgaard area may experience smoke from the fire, fire crews said.
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