9:15 P.M. UPDATE: The westbound lanes of Interstate 40 have reopened east of Flagstaff after a vehicle fire, according to ADOT.
4:30 P.M. UPDATE: I-40 WB is now closed at SR 99 due to the vehicle fire east of Flagstaff. All traffic must exit the I-40 onto SR 99 and detour through Leupp.
ORIGINAL STORY 4 P.M.: A vehicle fire has closed Interstate 40 westbound at milepost 204, just east of Flagstaff, according to the Arizona Department of Transportation. All traffic must exit on to US Route 66/US 180. It can then reenter the highway at Country Club Drive in Flagstaff. There is no estimated time to reopen the westbound lanes. Passers-by reported several vehicles involved in the crash.