Crews fought the fire for more than a week before declaring it contained Monday at slightly more than 1,100 acres.
Officials say southern Mo. blaze is partially contained.
550 acres of the Mark Twain National Forest already have burned, and approximately 2,000 additional acres are at risk.
High winds were blowing the flames across the highway
The timing and proximity of the fires is suspicious, leading investigators to believe an arsonist started them.