Drivers heading to Tucson or Casa Grande on Interstate 10 are entering the longest phase yet of the state's widening of the Wild Horse Pass Corridor. Work is now under way along 11 miles of the interstate, both directions, from Loop 202 south to the Gila River, AZFamily reported Thursday.
This is segment three of four in a 26-mile project that runs from Loop 202 in south Phoenix to SR 387 by Casa Grande. The corridor crosses the Gila River Indian Community and, according to the project's website, carries heavy commuter and freight traffic.
What this segment adds
According to AZFamily and the Arizona Department of Transportation's project site, the work between Loop 202 and the river includes:
- One more general-purpose lane each way, for three in each direction.
- HOV lanes both ways, but only between Loop 202 and Riggs Road.
- Reconstruction of three interchanges: Queen Creek Road/SR 347, Riggs Road, and Wild Horse Pass Boulevard/Sundust Road.
- An all-new Koli Road interchange, plus crossroad changes and widening at Goodyear Road.
- Wrong-way driver detection, freeway cameras and overhead message signs.
The project site lists this segment, mileposts 161 to 172, with construction running from late 2026 to late 2029.
Where the other pieces stand
Replacement of the interstate's Gila River bridges started in May 2024, and finishing work on them is scheduled for next month, according to AZFamily. Another segment, a 10-mile stretch running south from Gas Line Road and ending near the Pinal Avenue/SR 387 interchange outside Casa Grande, began in January.
It adds a third lane each way, rebuilds the Pinal Avenue interchange and adds one at Seed Farm Road, and it widens the Gas Line Road bridge while taking out the bridge at Dirk Lay Road.
The last piece, three miles between the Gila River and Gas Line Road, does not yet have a start date. ADOT's site says it may begin sometime in 2027 or 2028 and take about 18 months. AZFamily reported the whole corridor should be complete by late 2029.
