Arizona Department of Transportation photo

Interstate 10 would receive several upgrades from 2026-2030 as per ADOT’s five-year plan.

The Arizona Department of Transportation is targeting pavement improvements and expanding several key highways in the $12.7 billion Tentative Five-Year Transportation Facilities Construction Program for 2026-2030.

This list of projects ADOT intends to design and construct over the next five years is available for public comment through May 23.

The tentative five-year program provides $4.47 billion for projects throughout greater Arizona, which encompasses areas outside of Maricopa and Pima counties. Of this amount:

• $2.8 billion is planned to preserve, rehabilitate and replace pavement and bridges, including $455 million in pavement projects on interstates 8, 10, 17 and 40;

• $573 million in pavement projects on other routes, including U.S. routes 60, 70, 93, 160 and 180, and state routes 64, 72, 79, 80, 82, 85, 179, 260 and 347; and

• $237 million in bridge projects on interstates and $112 million on other routes

Another $592 million will be used for projects in greater Arizona that improve highway safety, efficiency and functionality, such as intersection improvements, updates to ports of entry and rest areas, smart technologies and adding signals, signs and shoulders.

The State Transportation Board is expected to consider formal action on the final program at its June 20 meeting.

The tentative five-year program allocates $1.05 billion for projects that widen highways or improve interchanges across Greater Arizona, including:

• $137 million to widen I-10 south of Phoenix from the Gila River Bridge to Gas Line Road;

• $110 million to widen S.R. 260 east of Payson (Lion Springs segment);

• $68 million to widen U.S. 93 north of Wickenburg (Vista Royale segment);

• $50 million to widen U.S. 93 at Big Jim Wash between Wickenburg and Wikieup;

• $66 million to replace the Colorado Bridge on I-10 at the California border, a joint project with Caltrans;

• $240 million to widen I-17 from Sunset Point to SR 69;

• $62 million for the new land port of entry road and facility in Douglas;

In Pima County, the tentative five-year program proposes $831 million in coordination with the Pima Association of Governments for projects including the following:

• $600 million for widening I-10 from Kino to Country Club, which includes building a new interchange at I-10 and Country Club Road and reconstructing the Kino Road interchange;

• $290 million to widen I-10 from Alvernon Way to Valencia Road;

• $47 million to reconstruct the I-19 interchange at Irvington Road; and

• $97 million to improve the interchanges on I-10 at Park and Sixth avenues

In Maricopa County, the tentative five-year program features $2.38 billion for projects planned in conjunction with the Maricopa Association of Governments (MAG). This funding will be supplemented with funds from Proposition 479, which voters approved in November, 2024

With the passage of Prop 479, MAG is now working on updating project schedules and costs for its Freeway Life Cycle Program. Those updates will be reflected in amendments to MAG's Transportation Improvement Program update and will be subsequently incorporated into the ADOT five-year program.

The tentative five-year program includes $135 million for the Airport Capital Improvement Program, which provides funding in conjunction with the Federal Aviation Administration for projects to design and construct safety, security and capacity enhancements, prepare various plans and studies, and fund improvements at the Grand Canyon National Park Airport, which ADOT operates.

Funding for the overall statewide program comes from federal and state dollars, in addition to money generated by users of transportation services in Arizona, primarily through gasoline and diesel fuel taxes, the Arizona vehicle license tax and various aviation taxes. Both the Maricopa and Pima county regions have dedicated, voter-approved sales taxes for transportation that fund expansion projects. 

(All photos courtesy of Arizona Department of Transportation.)

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