The Arizona Department of Transportation is constructing improvements to the cross street drainage system along the Interstate 17 frontage road between Greenway Road and Dunlap Avenue in Phoenix. The purpose of the project is to improve the drainage facilities that remove storm runoff from the Greenway, Thunderbird, Cactus, and Peoria cross streets, helping to reduce the potential for flooding at the Interstate 17 overpasses.
The improvements will include a new, gravity-powered storm drain system, utilizing various sizes of concrete pipes and new drainage basins at Thunderbird Road, and the removal of the existing pump stations from the aforementioned cross streets.The new system will discharge into the Arizona Canal Diversion Channel (ACDC), north of Dunlap Avenue
View an illustration ( English
) of how a gravitational flow drainage system works.
Construction is scheduled to begin in the late summer/fall 2019.
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