TUCSON — A new interchange at Interstate 10 and Country Club Road opened at the start of the Monday morning commute, the Arizona Department of Transportation said, marking another milestone in a large rebuild of I-10 southeast of downtown Tucson.
According to an ADOT news release Monday, traffic is now flowing on and off I-10 at Country Club Road. The interchange is part of a roughly $600 million project to reconstruct and widen I-10 from Kino Parkway to Alvernon Way.
ADOT said the Country Club Road interchange is a diverging diamond, a design that temporarily shifts local street traffic to the left side of the road while crossing the freeway. That layout allows drivers to make direct left turns onto entrance ramps without waiting at an additional traffic signal, the agency said. It is the second diverging diamond interchange in Southern Arizona, following one that opened in November 2021 at I-10 and Houghton Road in east Tucson.
The new interchange replaces the former Palo Verde Road interchange, which closed earlier this year. ADOT said the location was shifted to Country Club Road to allow for safer traffic movement to and from I-10.
Work on the broader project began in June 2025 with the goal of reducing delays and enhancing safety, according to ADOT. Major features include adding a third lane in each direction of I-10 and building two interchanges. The agency also listed plans to reconstruct the Kino Parkway interchange as a diverging diamond, remove the Palo Verde Road interchange, build a new westbound on-ramp at Alvernon Way, and construct an I-10 undercrossing connecting the North and South Kino Sports Complex.
ADOT called the effort the largest highway construction project in Southern Arizona history. Throughout construction, the agency said it will maintain two lanes of travel in each direction on I-10 during peak travel times while keeping access to businesses. Construction is expected to continue through 2028.
The project is the first to result from a 2020 study that recommended how to improve mobility along a roughly 10-mile stretch of I-10 from I-19 to Kolb Road. That study also identified an alignment for an extension of State Route 210, also known as Barraza Aviation Parkway, along Alvernon Way that would connect I-10 to downtown Tucson, ADOT said.
More information is available on ADOT’s I-10 Kino to Country Club project page.
Source: Arizona Department of Transportation news release, Nov. 9, 2026. Thee Arizona Times uses AI-assisted reporting reviewed against the sources listed.
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