I-17 South ramps at Thunderbird, Cactus roads to close for drainage work

Southbound I-17 frontage road in area will also close until late this year

drainage system workPHOENIX – The southbound Interstate 17 on-ramp at Thunderbird Road and off-ramp at Cactus Road will be closed for several months starting Wednesday night, April 28, for an ongoing regional drainage system project.

The southbound I-17 frontage road between Thunderbird and Cactus roads also will be closed as crews continue the installation of pipes to move stormwater in the area.

Drivers should plan on using alternate routes as needed, including other nearby on- and off-ramps at Greenway Road or Peoria Avenue, while the following restrictions are in place:

  • Southbound I-17 on-ramp at Thunderbird Road and off-ramp at Cactus Road closed from 9 p.m. Wednesday (April 28) until late fall 2021. The southbound I-17 frontage road between Thunderbird and Cactus roads also will be closed.

An overnight closure of the southbound I-17 right lanes, including merge lanes, between Thunderbird Road and Peoria Avenue, is scheduled from 9 p.m. Wednesday to 5 a.m. Thursday (April 29) while crews set up a work zone. Drivers should use caution, be prepared to merge safely and watch for workers and equipment.

Real-time highway conditions are available on ADOT’s Arizona Traveler Information site at az511.gov or by calling 511. Information also is provided via ADOT’s Twitter feed, @ArizonaDOT. When a freeway closure or other major traffic event occurs, the free app for ADOT Alerts, available at ADOTAlerts.com, will send critical information directly to app users in affected areas – where possible, in advance of alternate routes.