State Route 366 (Swift Trail) Repair Project

State Route 366 (Swift Trail) Repair Project



SR 366 Project Map

The Arizona Department of Transportation in cooperation with the Federal Highway Administration and the U.S. Forest Service is completing a project to repair damages on State Route 366 (Swift Trail) caused during the 2017 Frye Fire on Mount Graham near Safford.

Work will be completed between mileposts 118 and 140. Key elements of the project include:

  • Removal of burned trees
  • Repairs to the road surface in select locations
  • Drainage repairs
  • Box culvert replacements
  • A chip seal on the paved portion of the highway

Work began in January 2021 and will last up to two years.

While work is underway, SR 366 will remain open (with typical seasonal restrictions). However, motorists should expect lane closures with delays of up to 30 minutes. Note: the contractor may work on two locations at a time, thus multiple 30 minute delays are possible. In addition, signals will be used to control traffic at times.

Crews expect to work primarily during weekdays, but some weekend work is possible.


Stay Informed


Schedules are subject to change based on weather and other unforeseen factors. Subscribe to receive project updates and traffic alerts by email. For more information, please call the ADOT Bilingual Project Information Line at 855.712.8530 or submit a question or comment by email. For real-time highway conditions statewide, visit ADOT’s Traveler Information Site at, follow ADOT on Twitter (@ArizonaDOT) or call 511, except while driving