Drainage system on I-17 and Greenway working properly, according to ADOT

Interstate 17 and Greenway Road in north Phoenix is a notorious spot for flooding when monsoon storms hit.

In 2023, ADOT completed the I-17 regional drainage system between Dunlap and Greenway to solve this problem. By using gravity and angled pipelines in place of outdated stormwater pump stations, ADOT claims that the system is working as intended.

Doug Nintzel with ADOT stated that the new system has been able to protect underpasses in terms of cutting down incidents of standing water.

" ​ We have had some severe storms move through," Nintzel said regarding a severe thunderstorm that hit the Valley on July 24th. " I-17 was unaffected; at least the underpasses beneath I-17."

The Maricopa Association of Governments, which funded the nearly $50 million project, called the drainage system a success.

ADOT stated that the drainage system has improved the underpasses but also stated that no system is perfect.

Watch ABC15 live:

Latest from ABC15:

• Olympic marathon swimmers test Seine River amid concerns of contamination

  Justin Boggs

• Man facing charges after allegedly shooting at Phoenix police officers Tuesday

  abc15.com staff

• As prices remain high, local animal rescue faces uncertain future

  Jamie Warren

• Hamas names Yahya Sinwar, mastermind of the Oct. 7 attacks, as its new leader

  AP via Scripps News