I-17 101 traffic interchange

Overnight traffic switch May 3 at I-10/Houghton Road interchange

Overnight traffic switch May 3 at I-10/Houghton Road interchange

April 29, 2021

PHOENIX – Motorists east of downtown Tucson should plan for a traffic switch on the north side of the Interstate 10/Houghton Road interchange overnight Monday, May 3, according to the Arizona Department of Transportation. 

The work will involve intermittent delays and ramp closures while work crews shift the ramp configuration between 9 p.m., Monday, May 3, and 5 a.m. Tuesday, May 4. 

Once the transition is complete, crews will have moved the traffic signals to a new location farther north of the interchange. Also, the entrance ramp to I-10 westbound will be shifted to a temporary location north of the existing on-ramp. 

Because of the temporary ramp configuration, motorists exiting westbound I-10 will be required to turn north onto Houghton Road. No left turns will be allowed.

Motorists who want to reach southbound Houghton Road should instead exit at Rita Road, where they can re-enter I-10 eastbound to access Houghton Road. The left-turn restriction is expected to be in place several months, until the new bridge and new ramp connections are in place.

The work is part of a $24.4 million interchange reconstruction project to improve safety and traffic flow in a rapidly growing area of Pima County to the east of downtown Tucson. The interchange will be the first diverging diamond configuration in southern Arizona when it opens in late 2021. 

For more information, go to the project website.