ADOT will close Interstate-40 at Two Guns Thursday and Friday. The closure, about 30 miles east of Flagstaff, is needed due to ongoing bridge work at the Two Guns Exit. During the closures, drivers will use the on-and-off ramps at the interchange to exit and re-enter the highway. Eastbound I-40 will be closed from 5 a.m. until 6 p.m. Thursday. Westbound I-40 will be closed from 5 a.m. until 6 p.m. Friday. ADOT tells drivers to slow down and use caution around construction personnel and equipment while work is underway.