PARKS, Ariz. — A winter storm dumped heavy snow across northern Arizona on Friday, playing a major factor in a more than 15-mile (24-kilometer) backup on a major interstate.
Semitrucks and other vehicles were stalled on Interstate 40 westbound between Flagstaff and Williams late Friday as the sun set.
The snow, along with a two-vehicle crash, contributed to the backup, Arizona Department of Public Safety spokesperson Bart Graves said…