FNF Construction crews began widening Interstate 10 between Phoenix and Casa Grande, Ariz., in January 2026, according to azfamily.com.
The Arizona Department of Transportation (ADOT) will begin the $284 million second segment of the Wild Horse Pass Corridor Project, which will expand the freeway from two to three lanes in both directions.
This stretches 10 mi. between Gas Line Road and just south of State Route 387 in Pinal County. Work is expected to continue through late 2027, azfamily.com reported.
According to ADOT, other work includes:
• constructing a new interchange at Seed Farm Road;
• reconstructing the Pinal Avenue/SR 387 interchange;
• reconstructing and widening the Gas Line Road bridge;
• removing the Dirk Lay Road bridge; and
• improving the infrastructure and installing freeway management system with fiber optic cable, CCTV cameras and overhead message boards.
Crews expect to complete the first segment in late summer. That includes replacing and widening the eastbound and westbound bridges over the Gila River.
A $470 million third phase will be closer to the Valley and in Maricopa County, south of Ahwatukee and Chandler. It is expected to begin this summer and will widen 11 m. from Loop 202 south to the I-10 Gila River bridges. That work will continue until late 2029, according to azfamily.com.
The $158 million segment four will cover 3 mi. between the Gila River and Gas Line Road. Construction is supposed to start in late 2026.
