Interstate 40: A-1 Mountain Road Bridge Replacement - Flagstaff

Plan for 40-day closure of A-1 Mountain Road Bridge over Interstate 40 in Flagstaff scheduled for May 2 - June 10

Drivers should plan for delays and allow extra travel time

The Arizona Department of Transportation advises drivers to plan for an extended closure of the A-1 Mountain Road Bridge over Interstate 40 (exit 190) from midnight Monday, May 2, to 11 p.m. Friday, June 10, as work continues on the bridge replacement project.

  • DETOUR TO A-1 MOUNTAIN ROAD: Drivers traveling eastbound on I-40 traffic will take Exit 191 to turn around and travel westbound on I-40 to access A-1 Mountain Road.
  • DETOUR TO EASTBOUND I-40: Drivers on A-1 Mountain Road will first travel west on I-40  and exit Hughes Avenue (Exit 185- Bellemont) to turn around and proceed eastbound on I-40.

Drivers should proceed through the work zone with caution, slow down and watch for construction personnel and equipment.   

For more information, visit

I40 A-1 Mountain Road Bridge


Restrictions and Closures

For information about project-related restrictions and closures, please visit or call 511, except while driving.

ADOT will provide more information about project schedules and potential traffic impacts as information becomes available. Stay informed of traffic restrictions before they occur by subscribing to receive timely traffic alerts by email.

Schedules are subject to change on weather and other unforeseen factors.