Transportation Studies

Loop 303: Happy Valley Parkways to Lake Pleasant Parkway and Jomax Road Study

The Arizona Department of Transportation has initiated a study along a section of Loop 303 in the Northwest Valley to address how future growth in the region would impact the highway. The study will examine the benefits of adding a third general purpose lane in each direction between Happy Valley and Lake Pleasant parkways; constructing a new traffic interchange to tie in with the city of Peoria’s future extension of Jomax Road; and building a new bridge over the Beardsley Canal.

What to Expect:

During the construction phase, shoulder closures along the Loop 303 are anticipated and temporary single-lane closures might be necessary. ADOT would maintain at least one lane of travel  in each direction  while work is underway.


The study is scheduled to last 12 months.

Construction is scheduled to begin in fall 2019. Information about the duration of construction will be provided when a project schedule is confirmed.

Stay Informed:

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If you have questions or comments, call the ADOT Project Information Line at 855.712.8530 or email

Loop 303  Happy Valley and Lake Pleasant Parkways/Jomax TI Map

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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.

Comment on the Draft EA

There will be several opportunities to provide comments on the Draft EA, and all comment methods are considered equal. At any time during the 30-day public comment period, comments can be provided in several ways.

  • Public Hearing
    May 15, 2014 | 5-8 p.m.
    Presentation at 5:30 p.m.
    El Mirage Senior Center
    14010 N. El Mirage Rd.
    El Mirage, AZ 85335
  • In writing:
    ADOT Bell and Grand Project Team
    1655 W. Jackson St.
    MD 126F
    Phoenix, AZ 85007
  • Online
  • By email:
  • By phone: