Jun 2, 2026 - News

ADOT eyes improvements to key I-10 stretch

Jeremy Duda

Wide desert freeway with elevated beige ramps and light poles. A white semi-truck and cars travel below; palm trees on the left, pink bushes in the foreground, blue sky and distant mountains. — The "Mini Stack" where Interstate 10, State Route 51 and Loop 202 converge is no picnic during rush hour. Photo courtesy of the Arizona Department of Transportation

One of the Valley's most congested stretches of freeway might be getting a makeover soon.

Why it matters: The part of Interstate 10 between the Deck Park Tunnel downtown and Interstate 17 near Sky Harbor is "heavily congested during morning and afternoon commutes and is expected to worsen," per ADOT.

Average delays during rush hours are expected to increase by up to 60% without improvements.

State of play: ADOT, in partnership with the City of Phoenix and Maricopa Association of Governments, is studying possible improvements.

The study area includes several freeway segments that connect with I-10 — State Route 51 south of Thomas Road, Loop 202 west of 24th Street, and the "Mini Stack" where the three thoroughfares converge.
ADOT will examine things like possible changes to freeway ramp connections and lane configurations.

What's next: Let ADOT know what you think through its online survey by June 30.

The agency is planning a public meeting this fall, and expects to hold a public hearing on its proposal in late 2027 or early 2028.

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ADOT eyes improvements to key I-10 stretch

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