By Arizona Department of Transportation
The State Transportation Board has approved the 2025-2029 Five-Year Transportation Facilities Construction Program, which emphasizes pavement and bridge improvements and expanding several key highways.
The final 2025-2029 Five-Year Transportation Facilities Construction Program is available for review at azdot.gov/FiveYearProgram.
The $8.2B program puts a major emphasis on improving highway pavement and bridge infrastructure throughout greater Arizona, which encompasses areas outside of Maricopa and Pima counties. The plan provides more than $2.5B for these high-priority improvements during the next five years. This amounts to an average investment of approximately $500M/year to preserve, rehabilitate and replace pavement and bridges.
The program provides a total of $800M over five years for projects that improve highway safety, efficiency and functionality, such as intersection improvements; smart technology; freight mobility and signs, signals and lighting.
It also allocates $780M for projects that widen highways or improve interchanges across greater Arizona, including:
- Widening and improving US 93 between Wickenburg and I-40 in Kingman, including expanding three segments of the highway from two to four lanes. The US 93 improvements include the ongoing widening project near Wickenburg, along with new projects near Cane Springs, Vista Royale and Big Jim Wash.
- Widening the last two-lane section of State Route 260 in the Lion Springs area between Payson and Heber-Overgaard. This will complete a four-lane divided highway along the entire SR 260 corridor.
- Constructing a new I-40 interchange at Rancho Santa Fe Parkway in Kingman.
In the Maricopa County region, the program features approximately $2B in construction projects planned in conjunction with the Maricopa Association of Governments. Those projects include:
- Widening Interstate 10 between Phoenix and Casa Grande. The I-10 Wild Horse Pass Corridor will have four projects, including the construction of the I-10 Bridges Over the Gila River that began this spring.
- Extending Loop 303 between Van Buren Street and Maricopa County 85.
- Providing new HOV ramp connections between I-10 and Loop 101.
- Reconstructing the intersection of Grand Avenue, 35th Avenue and Indian School Road to separate traffic.
In Pima County, in coordination with the Pima Association of Governments, the program includes $849M toward:
- Improvements to I-10: Kino to Country Club, which includes building a new interchange at I-10 and Country Club Road, reconstructing the interchange at Kino Parkway and also widening I-10 in the area.
- Reconstructing the I-19 interchange at Irvington Road.
The program also includes more than $57M for airport projects throughout the state.
Funding for the statewide program comes from federal, state and local dollars in addition to money generated by users of transportation services in Arizona, primarily through gasoline and diesel fuel taxes and the Arizona vehicle license tax. Both the Maricopa and Pima County regions have voter-approved sales taxes for transportation that fund expansion projects.
The Arizona Department of Transportation’s five-year program is developed by working closely with local governments, regional transportation planning organizations and tribal communities to prioritize projects that are ready to build or design. ADOT also receives guidance from the Arizona Division Office of the Federal Highway Administration while developing and implementing the program.
Changes to the five-year program may occur throughout the year and can be viewed at estip.azdot.gov. (Source)