A major three-year project to widen a section of Interstate 10 in Tucson is set to begin this summer.
In fact, the widening project is being called the “largest highway construction project in Southern Arizona history,” by the state transportation department.
The new Houghton Road overpass at Interstate 10 uses a “diverging diamond” interchange to move a higher volume of traffic. A similar design will be used at two new interchanges in Tucson.
I-10 is set to be widened between South Park Avenue and South Alvernon Way, according to officials on the April 4 episode of the “On The Road With ADOT“ podcast.
The interstate will be widened to three lanes in each direction between South Kino Parkway and Alvernon, and to four lanes in each direction west of Kino to just east of South Park Avenue, officials say.
Two open houses are scheduled in May to discuss the work. The first open house will be from 5:30 p.m. to 7:30 p.m on May 7, at the Kino Sports Complex Event Center, 2805 E. Ajo Way. The second open house will be held virtually, beginning at 5:30 p.m. May 14. The meeting link is: https://bit.ly/KinotoCCMay2025.
The state department is widening lanes and building new interchanges on Interstate 10 over the next three years, in a project the state department of transportation says is the largest in Southern Arizona history.
All the work that requires closing lanes on the interstate will take place between 7 p.m. and 6 a.m., Carissa Klaus, of ADOT, said during the podcast.
In addition to the road widening, the transportation department will re-construct the traffic interchange at I-10 and South Kino Parkway, said Joanna Bradley, its assistant communications director. And a new interchange at I-10 and South Country Club Road also will be built.
The two will both have “diverging diamond” interchanges. That’s like the interchange at South Houghton Road and Interstate 10, Bradley said.
The Palo Verde Road, I-10 interchange will be removed, Klaus said during the podcast. In its place, a new westbound entrance ramp will be built for the Alvernon Way interchange, she said.
The Arizona Department of Transportation will make changes to the interchange at Kino Parkway at Interstate 10 beginning this summer.
Because the Kino Sports Complex expanded, it is now split by I-10. To deal with that, ADOT will be installing an underground crossing to link the two sides, Bradley said.
“This project is the largest highway construction project in Southern Arizona history,” Bradley said. “We could not be more excited that this is coming.”
Visit the project’s website to learn more: azdot.gov/interstate-10-kino-country-club.
