Northcentral District Projects

Interstate 40 and Twin Arrows Traffic Interchange improvement project

Project Overview

The Arizona Department of Transportation (ADOT) is constructing improvements to the Twin Arrows traffic interchange (TI) located 18 miles east of Flagstaff in Coconino County on Interstate 40 (milepost 218 to 220).

The project will provide new eastbound off and on ramps to create improved access at the traffic interchange. The project will also add new girders, widen the abutments, widen and repave the bridge deck, and replace the existing bridge barriers.

During construction, temporary concrete barriers will be in place on Interstate 40 within the project area, reducing travel to one lane for both east- and westbound traffic. The restriction will provide a safe construction zone and will be in place at all hours until work is completed. Restrictions across the bridge will be accommodated with flaggers and temporary traffic signals while work is underway. Access across the bridge and to Interstate 40 will be accommodated at all times, although temporary restrictions will be needed.

Construction on this project includes the following:

  • Relocating and constructing the eastbound Twin Arrows interchange off and on ramp to a diamond configuration
  • Widening the bridge to the west to accommodate two 12-foot travel lanes with eight-foot shoulders
  • Removing and replacing the bridge deck and barriers
  • Erecting new girders for the widened bridge and installing new bridge abutments
  • Paving and installing new signing and striping
What to Expect
  • Construction will occur mainly during daylight hours, Monday through Friday
  • No weekend or holiday construction is anticipated
  • Occasional night work will be required
  • Access to the traffic interchange, across the bridge and to Interstate 40 will be accommodated at all times
  • Temporary signals and flaggers will allow for travel on the bridge
  • Lane reductions will be required during construction  
  • Property access will be maintained during construction
  • Construction is anticipated to be complete by late fall 2017
Project Map
For More Information
  • Email:
  • Phone: Call Mackenzie Kirby, MPP, community relations project manager, ADOT Northcentral District, 928.525.6494

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Civil RightsTitle VI of the Civil Rights Act of 1964, and the Americans with Disabilities Act (ADA)

Pursuant to Title VI of the Civil Rights Act of 1964, and the Americans with Disabilities Act (ADA), ADOT does not discriminate on the basis of race, color, national origin, age, sex or disability. Persons that require a reasonable accommodation based on language or disability should contact ADOT’s Civil Rights Office at Requests should be made as early as possible to ensure the State has an opportunity to address the accommodation.

De acuerdo con el título VI de la Ley de Derechos Civiles de 1964 y la Ley de Estadounidenses con Discapacidades (ADA por sus siglas en inglés), el Departamento de Transporte de Arizona (ADOT por sus siglas en inglés) no discrimina por raza, color, nacionalidad, edad, género o discapacidad.  Personas que requieren asistencia (dentro de lo razonable) ya sea por el idioma o por discapacidad deben ponerse en contacto con la Oficina de Derechos Civiles en Las solicitudes deben hacerse lo más pronto posible para asegurar que el equipo encargado del proyecto tenga la oportunidad de hacer los arreglos necesarios.