Country Club Road Interchange Opens on I-10
Arizona Department of Transportation opened a diverging diamond interchange on Interstate 10 in Tucson as part of a larger reconstruction project.
Updated on Nov. 10, 2026 in Car Types
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The Arizona Department of Transportation opened the Country Club Road diverging diamond interchange on Interstate 10 in Tucson at the start of the Monday morning commute on November 9. The interchange replaces the Palo Verde Road interchange, which closed earlier this year.
Why it matters
The interchange is part of a $600 million project to reconstruct and widen I-10 from Kino Parkway to Alvernon Way, a project undertaken to reduce delays and enhance safety for Tucson drivers. It is the second diverging diamond interchange in Southern Arizona.
The $600 million reconstruction project began in June 2025 and includes widening I-10 to three lanes in each direction. The Houghton Road diverging diamond opened in November 2021 as the only other such interchange in the region before this one.
The players
Arizona Department of Transportation
The state agency responsible for building and maintaining Arizona's highways, including Interstate 10, and overseeing the reconstruction project.
The details
On a diverging diamond interchange, local street traffic temporarily shifts to the left side while crossing the freeway, allowing drivers to make direct left turns onto entrance ramps without waiting at an additional traffic signal. The project also includes reconstructing the Kino Parkway interchange as a diverging diamond and building an undercrossing to connect the North and South Kino Sports Complex.
Timeline
November 2021: Houghton Road diverging diamond interchange opened in Tucson.
June 2025: Work began on the overall I-10 reconstruction project.
Earlier in 2026: Palo Verde Road interchange closed.
November 9, 2026: Country Club Road interchange opened to drivers.
2028: Expected completion of the larger construction project.
Roadmap
The Country Club Road interchange extends the diverging diamond design first used at Houghton Road in November 2021 to a second Southern Arizona location. It continues a broader state effort to rebuild the I-10 corridor between Kino Parkway and Alvernon Way.
Tucson drivers using I-10 near Country Club Road will now pass through a diverging diamond design, which allows left turns onto entrance ramps without an additional traffic signal. Commuters should expect ongoing construction on the wider corridor until the project finishes around 2028.
The takeaway
The diverging diamond design has now been used at two Southern Arizona locations, offering a tested layout for drivers to become familiar with on busy interchanges. Drivers on I-10 in Tucson should watch for temporary lane shifts while construction continues.
What happens next
Construction on the broader I-10 reconstruction project is expected to continue through 2028.
Further reading
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