Traffic Alerts - I-17 Frontage Road Drainage Improvement

Plan for extended northbound I-17 ramp restrictions at Thunderbird Road beginning June 14

I-17 Frontage Rd Construction Update

The Arizona Department of Transportation advises drivers who use northbound Interstate 17 between Cactus and Thunderbird roads to plan for ramp and frontage road restrictions beginning June 14 through September 2021 to allow crews to safely perform a dirt hauling operation in connection with a regional drainage project.

ADOT urges drivers to slow down and use caution around construction personnel and equipment while the following restrictions are in place:

  • The northbound off-ramp at Thunderbird Road will be restricted and traffic shifted to the right. 
  • The northbound frontage road between Cactus and Thunderbird roads will be restricted to one lane then closed north of Roveen Avenue.
    • Detour: Drivers can use Roveen Avenue to 26th Lane/Voltaire Avenue and 24th Drive to access Thunderbird Road.

Ongoing Closures

  • The southbound I-17 off-ramp at Cactus Road is closed. 
    • Detour: Drivers can exit I-17 at Thunderbird Road and use 35th or 19th avenues to access Cactus Road.
  • The southbound I-17 on-ramp at Thunderbird Road is closed.
    • Detour:  Drivers can 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 is closed.
    • Detour: Drivers can 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.