Restrictions for I-17 drainage project in Phoenix begin Tuesday

PHOENIX — Valley drivers who normally take Interstate 17 may need to plan for a detour.

The Arizona Department of Transportation began its first restrictions for the I-17 drainage project Tuesday morning.

The southbound frontage road between Peoria and Dunlap avenues is expected to close for approximately four months.

The southbound on- and off-ramps will remain open during the project.

The new system is expected to be completed in fall 2021.

The project is designed to help limit the potential for cross-street flooding beneath the freeway using a gravity-controlled pipeline system between Dunlap Avenue and Greenway Road.

The underground pipes will be positioned at angles to move storm water into the Arizona Canal Diversion Channel near Dunlap Avenue.

The old pump stations used to remove runoff at the interchange between Peoria Avenue Greenway Road, most dating back to the 1960s, will be retired.

Future around-the-clock closures to other sections of the north- or southbound frontage roads will be needed to complete the project.

ADOT advises motorists to plan on using alternate routes, including 19th and 35th avenues.

Related

$300 million project on I-17 north of Phoenix aims to reduce congestionADOT says Valley freeways entering busy season for closures, restrictionsSAFE Alert issued for 85-year-old man last seen in PhoenixArizona’s ‘Queen of the South’ drug trafficker sentenced to 17 years in prisonHall of Flame in Phoenix fully repaired after flood damage a year agoPhoenix data center project moves ahead after site secured for $14.7M