PINAL COUNTY, AZ (AZFamily) — Crews will begin widening Interstate 10 between Phoenix and Casa Grande next week.
On Monday, the Arizona Department of Transportation will begin the second segment of the Wild Horse Pass Corridor Project, expanding the freeway from two to three lanes in both directions.
This segment covers a 10-mile stretch between Gas Line Road and just south of State Route 387 in Pinal County and is expected to continue through late 2027.
Crews plan to finish the first segment in late summer, which includes replacing and widening the eastbound and westbound bridges over the Gila River.
A 26-mile stretch of Interstate 10 south of Phoenix will be widened as part of a project expected to finish in late 2029.(Arizona Department of Transportation)
The third phase of the project will be closer to the Valley and in Maricopa County, just south of Ahwatukee and Chandler. Expected to begin this summer, it will widen 11 miles from Loop 202 south to the I-10 Gila River bridges, and continue until late 2029.
Segment four will cover three miles between the Gila River and Gas Line Road, with construction scheduled to start in late 2026.
On top of the third lane, when finished, the project will also include HOV lanes from Loop 202 to Riggs Road, reconstruct existing interchanges, and construct two new interchanges at Koli Road and Seed Farm Road.
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