Tucson, Arizona: New I-10 Interchange at Country Club Road Opens to Traffic

A new interchange opened on Interstate 10 in Tucson at the start of the Monday morning commute, and drivers in the southeast part of the city now get on and off the freeway at Country Club Road.

The Arizona Department of Transportation said traffic began flowing on and off I-10 at Country Club Road on Monday, November 9. The opening is one piece of a $600 million project to reconstruct and widen I-10 between Kino Parkway and Alvernon Way, southeast of downtown Tucson.

A different kind of interchange

The Country Club Road interchange is a diverging diamond, a design that is still new in Southern Arizona. Traffic on the local street shifts to the left side of the road while it crosses the freeway. That shift lets drivers turn left onto a freeway entrance ramp directly, without waiting at an extra traffic signal.

It is the second diverging diamond in Southern Arizona. The first opened in November 2021 at I-10 and Houghton Road in east Tucson, ADOT said.

The new interchange replaces the old Palo Verde Road interchange, which closed earlier this year. ADOT moved the connection to Country Club Road so traffic can move on and off I-10 more safely.

The wider rebuild

Work on the project began in June 2025, with the stated goals of cutting delays and improving safety. ADOT calls it the largest highway construction project in Southern Arizona history.

When it is done, I-10 will carry three lanes in each direction between Kino Parkway and Alvernon Way, with auxiliary lanes added. The Kino Parkway interchange will be rebuilt as a diverging diamond. Crews will remove the Palo Verde Road interchange, build a new westbound on-ramp at Alvernon Way and build an undercrossing that connects the north and south parts of the Kino Sports Complex.

ADOT says it will keep two lanes open in each direction on I-10 during peak travel times for the rest of the work, and keep access to businesses open. Construction is expected to continue through 2028.

The project is the first to come out of a 2020 study that looked at about 10 miles of I-10 from Interstate 19 to Kolb Road. The same study set the route for a planned extension of State Route 210, the Barraza Aviation Parkway, along Alvernon Way toward downtown Tucson.

Drivers who used the old Palo Verde Road ramps will now use Country Club Road to reach the freeway. ADOT announced in its November 5 bulletin for the week of November 8 to 14 that the new interchange would open to traffic on Monday, November 9, and it opened on that schedule at the start of the morning commute.