Traffic Alerts - I-17 Frontage Road Drainage Improvement

I-17 Frontage Rd Construction Update

Ongoing Closures

  • The southbound I-17 off-ramp at Cactus Road will be closed.
    • Detour: Drivers may exit I-17 at Greenway Road and use 35th or 19th avenues to access Cactus Road.
  • The southbound I-17 on-ramp at Thunderbird Road will be closed.
    • Detour:  Drivers may use 35th or 19th avenues to Greenway or Cactus roads to access southbound I-17.
  • The southbound I-17 frontage road between Thunderbird and Cactus roads will be closed.
    • Detour: Drivers may use 35th and 19th avenues as alternate routes. Local business access will be available via 28th Drive from Cactus Road and North Metro North Corporate Park (2800 West) from Thunderbird Road.

ADOT is constructing improvements to the storm water drainage system along I-17 between Greenway Road and Dunlap Avenue to reduce the risk of flooding when heavy rains occur. The improvements include constructing a new storm drain system to direct storm water into the Arizona Canal Diversion Channel, new drainage basins at Thunderbird Road, and removing the existing pump stations at the cross streets.