US 160 & IR 21 Intersection Improvements

US 160 & IR 21 Intersection Improvements


This project is complete

Project Cost: $600,000


The Arizona Department of Transportation, in coordination with the Navajo Nation, has initiated a project located at the intersection of US 160 and Indian Route 21. Work will be completed at the intersection and along US 160 and IR 21 between mileposts 342-344.

The proposed work consists of installing new signs, rumble strips, and other related work.

The project, located about 20 miles northeast of Tuba City, is scheduled to start this fall and be completed in spring 2024.


What to Expect

Work will take place from 7 a.m. to 5 p.m. Mondays through Thursdays. The contractor also has the discretion to work Fridays, as needed, from 7 a.m. to noon. No work is anticipated on weekends or holidays.

US 160 and IR 21 will be intermittently narrowed to one lane in the project area as crews complete the work. On-site flaggers will direct drivers through the work zone.

ADOT advises drivers to plan for possible delays while the work is underway. 


Project Area Map

Project Map for US 160 & IR 21 Intersection Improvements


Restrictions and Closures


Stay informed of traffic restrictions before they occur by subscribing to receive timely traffic alerts by email. It’s fast and easy. All we need is your email address!

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

Remember to slow down and use caution around construction workers and equipment.


Stay Informed

  • By email: Subscribe to receive traffic alerts and project updates directly to your email.
  • Online: Submit a question or comment through the ADOT website. Visit and then select Projects from the dropdown menu.
  • Phone: Call the ADOT Bilingual Project Information Line at 855.712.8530.
  • Teléfono: Línea de Información del Proyecto ADOT: 855.712.8530
  • By mail: ADOT Community Relations, 3660 E. Andy Devine Ave., Kingman, AZ 86401