Southcentral Districts Projects

Interstate 10: Signal project at Kolb, Rita and Wilmot roads

The Arizona Department of Transportation is scheduled to begin a signal project at the Interstate 10 interchanges at Kolb, Rita and Wilmot roads this summer.

The project involves installing traffic signal systems at each of the I-10 interchange ramps on the three roadways.

Motorists may encounter occasional days due to lane closures and traffic shifts while work is underway.

The work will be completed in phases through late spring 2019 with down time between the different phases.

I-10 Signal Project Tucson map

In addition to the signal systems, the project includes the following improvements:

  • Pavement and median adjustments
  • Curb and gutter work
  • Americans with Disabilities Act-compliant sidewalks and ramps (where needed)
  • Updated lighting

Crews will also modify the eastbound exit ramp at Rita Road. The existing “flying Y” for southbound traffic will be replaced with a more traditional right turn lane.

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

Schedules are subject to change based on weather and other unforeseen factors. Subscribe to receive project updates and traffic alerts by email. For more information, please call the ADOT Project Information Line at 855.712.8530 or email

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Civil Rights

Pursuant to Title VI of the Civil Rights Act of 1964, the Americans with Disabilities Act (ADA) and other nondiscrimination laws and authorities, ADOT does not discriminate on the basis of race, color, national origin, sex, age, 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, la Ley de Estadounidenses con Discapacidades (ADA por sus siglas en inglés) y otras normas y leyes antidiscriminatorias, el Departamento de Transporte de Arizona (ADOT) no discrimina por motivos de raza, color, origen nacional, sexo, edad o discapacidad. Las personas que requieran asistencia (dentro de lo razonable) ya sea por el idioma o discapacidad deben ponerse en contacto con la Oficina de Derechos Civiles de ADOT en Las solicitudes deben hacerse lo más antes posible para asegurar que el Estado tenga la oportunidad de hacer los arreglos necesarios.