Major Metro Phoenix Freeway Projects to Reach Key Milestones in 2025

PHOENIX — Metro Phoenix drivers can expect significant progress on several major freeway projects as 2025 gets underway, including the completion of Arizona’s largest freeway project in history.

The Arizona Department of Transportation (ADOT) is preparing to wrap up the I-10 Broadway Curve Improvement Project, among other key initiatives, while launching new construction efforts to improve traffic flow and connectivity across the region.

Projects Nearing Completion

I-10 Broadway Curve Improvement Project

ADOT’s most extensive freeway project, which began in fall 2021, is set to finish this year. Spanning 11 miles in the East Valley, the project includes additional lanes, elevated ramps at the I-10/State Route 143 interchange, pedestrian and cyclist bridges, and a widened Guadalupe Road bridge. Completion is expected by fall 2025.

I-17 Improvement Project (Anthem Way to Sunset Point)

This 23-mile project, which started in late 2024, is slated for completion by late 2025. The addition of third lanes in both directions between Anthem Way and Black Canyon City is nearly done, while work continues on an 8-mile flex lane system north of Black Canyon City.

I-17 Resurfacing Project (Happy Valley Road to State Route 74)

The north Phoenix project, which began in May 2024, involves diamond grinding of the freeway’s concrete surface and is expected to be completed by March 2025.

Projects Continuing into 2026 and Beyond

Loop 101 (Pima Freeway) Improvement Project (Shea Boulevard to Princess Drive)

Started in January 2024, this Scottsdale project involves adding lanes and converting the Frank Lloyd Wright Boulevard interchange to a diamond configuration. It is scheduled for completion in early 2026.

Loop 101 (Agua Fria Freeway) Widening Project (I-17 to 75th Avenue)

This September 2024 project includes adding lanes and improving interchanges along the stretch. Completion is expected by 2027.

Loop 202 (Santan Freeway) Widening Project (Loop 101 to Val Vista Drive)

Begun in August 2024, this project aims to expand capacity with new lanes and enhanced bridges. It is projected to conclude in early 2027.

I-10 Gila River Bridge Construction

Work began in summer 2024 to replace aging bridges southeast of Riggs Road. Completion is anticipated by summer 2026.

New Projects Starting in 2025

Loop 303 Expansion (Van Buren Street to MC 85)

Set to begin in the fall, this three-year project will add new lanes, bridges, and crossings to improve traffic flow in the area.

I-10/Loop 101 Interchange Improvement Project

Expected to start this spring, the West Valley project includes new HOV ramps and modifications to ramps at Thomas and McDowell Roads, aiming to ease congestion and streamline freeway connections. Completion is targeted for 2027.

A Year of Transformation

With these projects in motion, ADOT continues to modernize metro Phoenix’s freeway system, addressing growth and future traffic demands. For commuters, 2025 promises significant progress toward improved travel efficiency and safety across the Valley.