I-17 101 traffic interchange

ADOT conducting public survey about I-17 speed limit in Phoenix

ADOT conducting public survey about I-17 speed limit in Phoenix

September 15, 2023

Input sought in association with new law, independent speed study

PHOENIX – The Arizona Department of Transportation has launched a public survey to gather input about the speed limit along a stretch of Interstate 17 in Phoenix, in accordance with a new state law.

ADOT has commissioned an independent study to determine an appropriate speed limit for I-17 between the I-10 “Split” interchange near Phoenix Sky Harbor International Airport and Peoria Avenue. The speed limit for that part of I-17 is currently 55 mph. 

You can take part in the online survey from now through Saturday, Sept. 30, at https://tinyurl.com/I-17speedlimits; by email at [email protected]); and by phone at 1.855.712.8530. Comments also can be mailed to: I-17 Speed Limit Study, ADOT Community Relations, 1655 W. Jackson St., MD 126F, Phoenix, AZ 85007.

The speed study follows passage of legislation (SB 1102) that calls for a minimum speed limit of 65 mph on any interstate highway in counties with a population of 3 million or more people.

SB 1102 also stipulates that a lower speed limit can be set if certain conditions are met, including:

  • A lower limit is deemed necessary based on an independent engineering study or roadway assessment.
  • The overall system capacity and mobility along the freeway will not be reduced.
  • An opportunity for public input is provided.

The I-17 speed limit study is scheduled for completion in mid-October.