I-10’s last four-lane corridor between Phoenix and Tucson is on track to be upgraded to solve longstanding safety and congestion issues.
Known as the Wild Horse Pass Corridor, the 26-mile section is located in the Gila River Indian Community, running from the Loop 202 Santan/South Mountain Freeway in Phoenix to north of Casa Grande. For the northern 12-mile segment of the corridor, the Arizona Department of Transportation chose the design and construction team of Coffman Specialties and Fisher Sand & Gravel, with lead designer Stantec Consulting Services.
Featuring new travel and HOV lanes, the nearly four-year, $410 million project includes replacing the entire stretch of existing asphalt with new concrete pavement, providing a 30-year service life at nearly the same cost as new asphalt, according to Stantec.
The first project in ADOT’s billion-dollar program will wrap up this summer with the replacement of two bridges spanning the Gila River. Under construction by Pulice Construction since May 2024, the $71.2 million structures include deeper foundations and higher elevations for a stronger river crossing, according to the agency.
209.1 million dollars
The U.S. transportation construction market is expected to grow nearly 3% to a record $209.1 billion by 2026
Source: American Road & Transportation Builders Association
Earlier this year, FNF Construction began improving a 10-mile segment in the southernmost section. Designed by Point Engineers and Kimley-Horn, the project is expected to be completed in two years. ADOT has not selected design and construction teams for the final three-mile segment between the Gila River and the gas line road, which is scheduled to begin later this year.
HDR is acting as program manager and general engineering consultant for the entire corridor upgrade program, which is scheduled for completion in 2029.
