Edit on 3/19 to add:
Based on emails from ADOT and various news reports, most major roads seem to be re-opened. However, call ahead to learn about specific destinations and areas.
Some of the remaining road closures (courtesy Channel 12) -
Eastbound Interstate 40 closed between the SR 89 junction (near Ash Fork) and Williams. Westbound I-40 is open to traffic.
A 30-mile stretch of State Route 87 closed in both directions north of Payson.
Tire chains are required along State Route between Star Valley and Heber (an area east of Payson).
US 180 closed northwest of the Snow Bowl turnoff to the State Route 64 junction.
From an email from ADOT (Arizona Department of Transportation) -
Update 10:40 a.m. - Westbound Interstate 40 has reopened at Winslow. Eastbound I-40 remains closed at US 93, as tractor trailers are backed up at Ash Fork Hill west of Flagstaff. Northbound Interstate 17 remains closed at the junction of SR 179, though crews are making progress on clearing the snow and ice from the roadway. Southbound Interstate 17 remains open from Flagstaff.
Update 10:15 a.m. – State Route 87 is closed from the junction of State Route 260 at Cinch Hook Hill (milepost 278) to Winslow (milepost 341) State Route 260 is closed from east of Camp Verde (milepost 228) to State Route 87.
Update 9:40 a.m. - State Route 87 is closed from Clint’s Well (milepost 285) to Winslow (milepost 341).
Arizona Department of Transportation crews are fully deployed in response to the winter storm that developed overnight. Heavy snow is still falling from Flagstaff to the White Mountains, causing hazardous driving conditions.
The following closures are in place as of 8 a.m.
Northbound Interstate-17 is closed at the junction of State Route 179. I-17 southbound remains open at this time.
Interstate-40 is closed in both directions from US 93 to Winslow.
US 180 is closed north of the Arizona Snowbowl to State Route 64 at Valle.
State Route 87 is closed north of Pine near Clint’s Well.