State Route 366 on Mount Graham closes for winter

PHOENIX ‒ The upper, unpaved portion of State Route 366, which ascends Mount Graham in the Pinaleño Mountains southwest of Safford, closed Monday, Nov. 14, for the winter, according to the Arizona Department of Transportation.

The closure is in effect through April 15.

SR 366, also known as the Swift Trail, begins about five miles south of Safford off US 191.

The highway is blocked about one-half mile past the Coronado National Forest’s Shannon Campground, at the end of the pavement.

Motorized vehicles aren’t allowed on SR 366 past the locked gate, but hikers, mountain bikers and cross-country skiers can still use the area.

ADOT will close lower portions of SR 366 as needed to clear snow.