Mountain States & Southwest

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Arizona is closing the final four-lane gap on I-10 between Phoenix and Tucson with a $1-billion corridor upgrade designed to improve safety, reduce congestion and increase long-term resilience. Multiple projects are now underway, with the full Wild Horse Pass Corridor program scheduled for completion in 2029.

Design and construction teammates reunite at renowned Colorado neuro-rehabilitation hospital for $250-million expansion.

Modern engineering feat ensures the Salt Lake City Temple respects its rich history while creating a stable future.

Innovation is the key to success for ENR Southwest’s Design Firm of the Year.

The ENR Mountain States Design Firm of the Year zeroes in on the growing aviation and transportation sectors.

“Whether you’re looking to move, work or invest, the Boise area has a lot going for it,” says Hobbs. “Conditions are strong ... and we’re anticipating the market to continue strengthening as we head into 2027.”

The industry’s ability to deliver complex projects under pressure is a point of professional pride shared across every trade and every crew.

Updates about construction professionals from across the Mountain States & Southwest region.

Updates on projects and companies in the Mountain States and Southwest region.