As crews continue replacing the bridge at the Bellemont traffic interchange along Interstate 40 west of Flagstaff, ADOT will close the interstate in both directions, under the bridge, this weekend and the overnight next Monday through Thursday. Traffic will detour along the off and on-ramps while the highway is closed at the Bellemont/Transwestern Road interchange. The weekend closure is scheduled from 6 p.m. Friday through 6 a.m. Monday. During the closures, drivers who ordinarily use the Bellemont/Transwestern Road interchange can use the I-40 interchanges at Parks and A-1 Mountain Boulevard. The project will improve the bridge deck and pavement and widen the on-and-off ramps at the exit.