Traffic Alerts - I-17 Frontage Road Drainage Improvement

Plan for extended I-17 ramp and northbound frontage road closures beginning Jan. 16

The Arizona Department of Transportation advises drivers who use Interstate 17 in the area of Thunderbird and Greenway roads to plan for ramp closures beginning 10 p.m. Sunday, Jan. 16 and continuing through fall 2022.

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

  • The northbound I-17 on-ramp at Thunderbird Road and off-ramp at Greenway Road will be closed.
    • Detour: Drivers can use 35th or 19th avenues to Cactus or Greenway roads to access northbound I-17. 
  • The northbound I-17 frontage road between Thunderbird and Greenway roads will be closed.
    • Detour: Drivers can use 35th and 19th avenues as alternate routes.
  • The southbound I-17 frontage road between Thunderbird and Cactus roads, as well as the on-ramp at Thunderbird Road and off-ramp at Cactus Road will remain closed through late spring 2022.
    • Detours: Southbound drivers can exit I-17 at Thunderbird Road and use 35th or 19th avenues to access Cactus Road. Drivers can use 35th or 19th avenues to Greenway or Cactus roads to access southbound I-17.  
  • Northbound I-17 will have a right lane closure between Thunderbird and Greenway roads nightly Jan. 16 and 17 from 9 p.m to 5 a.m.

project map

 

Periodic weekend and overnight closures of Greenway Road will also be required. ADOT will provide more details prior to these closures.

The closures are needed to install a new storm drain along the frontage road and connect it to the Arizona Canal Diversion Channel north of Dunlap Avenue.

Ongoing Closures

  • The southbound I-17 off-ramp at Cactus Road is closed.
    • Detour: Drivers can 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 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 Metro North Corporate Park from Thunderbird Road.

ADOT advises drivers to slow down and use caution around construction personnel and equipment while work is underway. 

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.