I-17 Widening and Improvement Project, Anthem Way to Sunset Point

ADOT has completed an environmental study and Design Concept Report for improvements to Interstate 17 between the Anthem Way Traffic Interchange and Sunset Point, located about 10 miles south of State Route 69. The study segment is located in Maricopa and Yavapai counties.

This 34-mile stretch of I-17 currently provides two travel lanes in each direction along rolling terrain in the northern and southern segments and mountainous terrain in the middle. The proposed improvements are designed to add capacity and improve safety along this heavily traveled section of highway.

The Final Design Concept Report was published in April 2019.

Interstate 17 provides a critical connection between Phoenix and Flagstaff, from I-10 to I-40, two of the nation's principal east-west interstate highways. It is the primary connection between the greater Metropolitan Phoenix region and communities in northern Arizona. While previous studies focused on long-term transportation solutions between Black Canyon City, located in Maricopa County north of Phoenix, and Cordes Junction in Yavapai County, the current effort targets ways to improve traffic flow and safety in the near-term between Anthem Way and Sunset Point. Watch a video simulation of proposed near-term improvements.

I-17: Anthem Way to Cordes Junction Study Map