PHOENIX — Crews have finished building new eastbound and westbound Interstate 10 bridges over the Gila River, wrapping up the first of four segments of the project to widen the freeway between the Phoenix area and Casa Grande, according to a release from the Arizona Department of Transportation.
The bridges sit about 11 miles south of the Phoenix and Chandler area. Work began in May 2024 and included tearing out the old bridges and building new ones that are wider and higher, ADOT said.
The new bridges carry three lanes in each direction with wider shoulders. ADOT said the third lane will not open to traffic until the rest of the I-10 Wild Horse Pass Corridor Project is complete.
Construction on the second segment, covering about 10 miles of I-10 north of Casa Grande, began in January 2026, according to the agency. A third segment, running about 11 miles from the Phoenix and Chandler area down to the Gila River, recently got underway.
When all four segments are done in late 2029, drivers will have an extra travel lane in both directions between metro Phoenix and Casa Grande, ADOT said.
The project will also rebuild several interchanges and add new ones between Wild Horse Pass Boulevard and SR 347/Queen Creek Road and at Seed Farm Road. Freeway cameras, overhead message boards and wrong-way vehicle detection systems are also planned.
While the work continues, the speed limit on I-10 between Phoenix and Casa Grande remains reduced to 55 mph, ADOT said. Travelers can sign up for alerts on the project website.
Sources: Arizona Department of Transportation news releases, I-10 Wild Horse Pass Corridor Project. Thee Arizona Times uses AI-assisted reporting reviewed against the sources listed.
Photo: Ammodramus / CC0 via Wikimedia Commons.
