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Two weekend I-10 closures coming for South Mountain Freeway interchange

Crews will shift traffic between 43rd and 67th avenues for next phase of work
October 31, 2018

PHOENIX – Drivers using Interstate 10 through west Phoenix should plan ahead for two weekend-long closures, beginning with a westbound closure this weekend, as the Arizona Department of Transportation moves into the next phase of construction on a Loop 202 South Mountain Freeway interchange.I-10 Paving Photo

With heavy traffic and delays expected, ADOT recommends drivers allow extra travel time and consider alternate routes while the following closures are in place:

  • Westbound I-10 closed between 43rd and 67th avenues from 10 p.m. Friday, Nov. 2, to 5 a.m. Monday, Nov. 5. Westbound I-10 on-ramps at 27th and 35th avenues will also be closed in addition to the northbound and southbound I-17 ramps connecting to westbound I-10.
  • Eastbound I-10 closed between 67th and 51st avenues from 9 p.m. Friday, Nov. 16, to 4 p.m. Sunday, Nov. 18. Eastbound I-10 on-ramps at 91st, 83rd, 79th and 75th avenues will also be closed.

Motorists should allow extra travel time and consider alternate routes including Loop 101 west of I-17.

McDowell Road, Van Buren Street and the westbound I-10 access road between 51st and 67th avenues will serve as primary local westbound detour routes this weekend. Slow traffic is expected on roads closest to I-10.

The closures will allow for I-10 travel lanes to be shifted to the outside, or right side, of the freeway to allow the next phase of work on the South Mountain Freeway interchange to begin along the I-10 center median. Work will include excavation, earthwork and paving in the I-10 median, along with building the bridge structures for the HOV flyover ramps for the I-10/Loop 202 interchange.

WB I10 CLOSURE 11 02 2018_Eng_EngTo provide a level driving surface within the work zone, crews also must remove the existing 1-inch top layer of smooth rubberized asphalt along I-10 between 43rd and 59th avenues. That will allow the concrete surface along existing lanes to match new concrete pavement being used for the temporary traffic shifts.

The temporary removal of rubberized asphalt will mean the I-10 pavement in that area will not be as smooth until resurfacing is done at a later date near the completion of the South Mountain Freeway project.

The 22-mile South Mountain Freeway, expected to open as early as late 2019, will provide a long-planned direct link between the East Valley and West Valley and a much-needed alternative to I-10 through downtown Phoenix. Approved by Maricopa County voters in 1985 and again in 2004 as part of a comprehensive regional transportation plan, the South Mountain Freeway will complete the Loop 202 and Loop 101 freeway system in the Valley.

ADOT works to inform the public about planned highway restrictions, but there is a possibility that unscheduled closures or restrictions may occur. Weather can also affect a project schedule. To stay up to date with the latest highway conditions around the state, visit ADOT’s Arizona Traveler Information site at or call 511.


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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.