Just after 8-am this morning, a crash closed I-40 westbound about 15 miles west of Flagstaff. DPS Spokesperson Vanessa Sevilla says a multi-vehicle collision that includes two semi, a tour bus and several passenger vehicles. ADOT says the amount of time before they can reopen the road is unknown. The westbound lanes are shut down and drivers should exit at Parks Road. The National Weather Service reports areas of heavy snow falling along I-40 between Bellemont and Williams. Drivers should expect difficult travel conditions. Real-time highway conditions are available at az511.gov, by calling 511 and through ADOT’s Twitter feed,@ArizonaDOT.