The Arizona Department of Transportation (ADOT) reports that construction crews with the I-10 Wild Horse Pass Corridor Project (I-10 between Phoenix and Casa Grande) have begun active construction on an 11-mile stretch of I-10 in both directions between Loop 202 (Santan/South Mountain freeways) and the Gila River.
This 11-mile stretch of I-10 is the third of four segments in the 26-mile project corridor between Phoenix and Casa Grande. In this segment, crews will:
- Add a third general purpose lane in both directions
- Add a high-occupancy vehicle lane in both directions from the Loop 202 to Riggs Road
- Reconstruct the interchanges at Wild Horse Pass Boulevard, Riggs Road and Queen Creek Road/State Route 347.
- Construct a new interchange between Wild Horse Pass Boulevard and Queen Creek/State Route 347, at Koli Road.
- Install overhead messaging boards, freeway cameras and wrong-way detection systems.
Construction on the first project segment began in May 2024 with the replacement of the I-10 bridges over the Gila River, located 11 miles south of Loop 202 (Santan/South Mountain freeways). The finishing touches on these new bridges are scheduled for next month.
Construction began on the second project segment in January 2026. This 10-mile stretch of I-10 runs from Gas Line Road to just north of Casa Grande near the Pinal Avenue/State Route 387 interchange. In this segment crews are adding a third general purpose lane in both directions, reconstructing the Pinal Avenue/State Route 387 interchange, constructing a new interchange at Seed Farm Road, widening the Gas Line Road bridge over I-10 and removing the Dirk Lay Road bridge over I-10.
Once completed, the I-10 Wild Horse Pass Corridor Project will help reduce traffic congestion and travel times for motorists commuting between the Phoenix and Casa Grande areas. All four segments of the 26-mile I-10 project are expected to be completed by late 2029.
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