LITTLEFIELD, Ariz. (AP) — A 9-mile (14.5-kilometer) stretch of Interstate 15 across the corner of northwestern Arizona reopened to traffic Tuesday after a 5 1/2-hour overnight closure due to a brush fire. The closure occurred Monday night north of Mesquite, Nevada, and south of St. George, Utah. The Arizona Department of Transportation said the highway reopened at about 2:30 a.m. Tuesday.