SR 89A - I-40B (Milton Road) Pavement Rehabilitation


Project Cost: $3,600,000


The Arizona Department of Transportation has begun a pavement rehabilitation project on State Route 89A (known locally as Milton Road) and Route 66 (also known as I-40B) in Flagstaff. Work began in April and is expected to conclude in summer 2022. The project limits are Forest Meadows Street to Phoenix Avenue.

The work consists of removing the existing pavement by milling and replacing it with new pavement. Additional work includes removing and replacing existing curb and gutter, sidewalks, driveways, pavement markings and other related work. Some minor drainage, erosion control, and rock slope scaling and cleanup work also will take place just north of Forest Meadows Street.

What to Expect

  • The majority of the project work will occur at night between the hours of 7 p.m. to 7 a.m., Sunday nights through Friday mornings.
  • Work will require lane restrictions and traffic shifts, as well as temporary bus stop relocations during lane restrictions.
  • Expect delays while restrictions are in place, proceed through the work zone with caution and observe the speed limit.

Project Area Map

project map

project fact sheet


Stay Informed

  • Email: Subscribe to receive project updates and traffic alerts.
  • Phone: ADOT Project Information Line: 855.712.8530.`
  • Teléfono: Línea de Información del Proyecto ADOT: 855.712.8530`
  • Online: Submit a question or comment through the ADOT website. Visit and then select Projects from the dropdown menu.
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