Sundt Enters Preconstruction Talks for SR 347

The Daily Dig:

The Arizona Department of Transportation has selected Sundt Construction as the prime contractor for the State Route 347 Corridor Improvement Project, authorizing the agency to enter preconstruction negotiations. The work covers roughly 15 miles of SR 347 between Interstate 10 and the City of Maricopa, a corridor that has long struggled with congestion, crash history, and limited capacity during peak commuting hours.

The project scope includes widening the highway with additional lanes in each direction, pavement rehabilitation, new grade separated interchanges at Riggs Road and Mammoth Way, and intersection improvements at Casa Blanca Road and Maricopa Road. The corridor runs through multiple jurisdictions, including ADOT right-of-way, the City of Maricopa, Pinal County, and land within the Gila River Indian Community. This adds coordination complexity to design, access, and construction phasing.

ADOT plans to use an early contractor involvement approach, with Sundt providing preconstruction services to refine design, pricing, and sequencing before a future construction agreement. Construction is anticipated following preconstruction and final approvals, with current planning documents pointing to activity beginning as early as 2026.

Project Snapshot:

• Owner / Developer: Arizona Department of Transportation

• General Contractor: Sundt Construction

• Sector: Transportation / Highway / Heavy Civil

• Value: Approximately $396 million

• Location: SR 347 from Interstate 10 to the City of Maricopa, Arizona

• Timeline: Preconstruction negotiations underway; construction anticipated following approvals, potentially starting as early as 2026

TheJobWalk Thoughts:

This is the kind of job you want Sundt running. With a lot of previous experience in heavy civil work and a huge presence in Arizona, what could go wrong! Live traffic, and overlapping jurisdictions don’t leave much room for mistakes. Getting constructability, traffic control, and access planning sorted before final pricing should reduce downstream change orders and schedule friction. It won’t make the work painless, but it should make it more predictable once crews mobilize.