Mount Graham roadway to fully reopen April 15

State Route 366 (Swift Trail) that leads to Riggs Lake on Mount Graham will be reopened for the season April 15, however, traffic delays due to a road repair project are likely.

Lane closures with up to 30-minute delays are expected due to a road repair project

Contributed Article/Courtesy ADOT

MOUNT GRAHAM -State Route 366 (Swift Trail) is scheduled to reopen to traffic for the season above the Shannon Campground on Mount Graham on Thursday, April 15.

Due to an ongoing roadway repair project, motorists on SR 366 should expect lane closures with delays of up to 30 minutes. Signals or flaggers will be used to control traffic.

The contractor may work on two locations at a time, thus multiple 30 minute delays are possible.

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

Contributed Photo: Part of the road repair project involves removing trees burned in the 2017 Frye Fire.

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

The project is needed to complete repairs caused by the 2017 Frye Fire.

Drivers should proceed with caution, slow down and watch for construction personnel and equipment.

For more information, go to the project website.

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.

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