ADOT set to reopen State Route 366 up Mount Graham

Jon Johnson File Photo/Gila Herald: With the winter’s snow shown here now almost all melted, State Route 366 (Swift Trail) is set to reopen Monday, April 15, up to Riggs Lake.

Routes to the White Mountains and area lakes there set to open as well

Contributed Article/Courtesy ADOT

PHOENIX – With another winter behind us, State Route 366, also known as Swift Trail, which runs up Mount Graham to Riggs Lake, is scheduled to open April 15.

Three White Mountains-area state highways leading to lakes are also scheduled to open Monday, April 15, according to the Arizona Department of Transportation. 

The three highways are State Route 261 between Eagar and Big Lake; State Route 273 between Sunrise Park and Big Lake; and State Route 473 between State Route 260 and Hawley Lake.

Another highway that closes for the winter, State Route 67, leading to the North Rim of the Grand Canyon, is expected to reopen in mid-May.

Before heading off to enjoy the mountains, motorists should do the following:

  • Make sure all occupants in a vehicle are buckled.
  • Check tire pressure, fluids and more to make sure a vehicle is in proper running condition.
  • Be patient, including not following other vehicles too closely and building in extra travel time.
  • Get enough sleep before the trip.
  • Bring extra water and food.
  • Never drink and drive.
  • Check for information about highway restrictions and more by visiting, calling 511 or following ADOT on Twitter (@ArizonaDOT).

Schedules are subject to change based on weather and other unforeseen factors. For more information, please call the ADOT Bilingual Project Information Line at 855.712.8530 or go to and select Projects from the drop-down menu. For real-time highway conditions statewide, visit ADOT’s Traveler Information Site at, follow ADOT on Twitter (@ArizonaDOT) or call 511, except while driving.