Winter closures coming to 5 Arizona high-country highways

Winter closures are coming to five highways in Arizona’s high country, starting with one that closes Thursday.

The Arizona Department of Transportation is closing the segments for the season because snow and ice make the routes hard to maintain and unsafe to drive.

With winter approaching, we’re preparing to close five high-country highway segments for the season as snow and icy conditions become more likely.

More: https://t.co/aQUDoBWOMB https://t.co/lXkRKwI0ZW

— Arizona DOT (@ArizonaDOT) November 9, 2026

Snowfall or other severe weather could close the roads even earlier than planned.

Closures scheduled for State Route 473 and Mount Graham

The first closure is Thursday on State Route 473 between State Route 260 and Hawley Lake.

In southeastern Arizona, State Route 366 (Swift Trail) on Mount Graham is set to close Sunday. The closure starts at the end of the pavement, a half mile past the Coronado National Forest’s Shannon Campground.

Three more winter closures scheduled in December

These high-country routes will close later this winter:

• State Route 67 south of U.S. 89A is set to close Dec. 7 between Jacob Lake and the North Rim of Grand Canyon National Park.
• State Route 261 is set to close Dec. 31 between Eagar and Big Lake.
• State Route 273 is set to close Dec. 31 between Sunrise Park and Big Lake.

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