Traffic Alerts - I-40: Interstate 17 to Walnut Canyon Road

UPDATE: Expect intermittent lane restrictions, delays on Interstate 40 in Flagstaff April 3 – Oct. 31

The Arizona Department of Transportation advises drivers who travel Interstate 40 in Flagstaff to plan for intermittent lane restrictions while ADOT crews return from winter shutdown to complete the pavement preservation work that began in spring 2021.

The following restrictions will occur around-the-clock from Sunday, April 3, through Monday, Oct.31:

  • East- and westbound I-40 will be narrowed to one lane in the construction zones between the junction with I-17 and Walnut Canyon Road (mileposts 195 - 205). 
  • Flaggers will be on site to assist with traffic control.  
  • The speed limit will be reduced to 45 mph in the work zones.
  • 14-foot vehicle-width will be allowed, but may not be accommodated at all times. Additional notice will be provided for locations and times when a 14-foot vehicle width cannot be accommodated.

ADOT advises drivers to slow down and use caution around personnel and equipment while pavement repairs are underway.

For more information, visit the project webpage:

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.