I-17 improvement project between Anthem and Sunset Point to begin soon

The I-17 Improvement Project is slated to begin in 2022. (Photo/ADOT)

The I-17 Improvement Project is slated to begin in 2022. (Photo/ADOT)

ARIZONA - The Interstate 17 Improvement Project from Anthem Way to Sunset Point is set to begin soon, according to the Arizona Department of Transportation.


The Arizona Department of Transportation’s (ADOT) ambitious $445.9 million project to widen Interstate 17 from Anthem to Sunset Point will begin in 2022 and take 3.5 years to complete. (Graphic/ADOT)

Construction is scheduled and is expected to take approximately three years. Work will include 15 miles of widening from Anthem Way to Black Canyon City and eight miles of flex lanes from Black Canyon City to Sunset Point.

The total project cost is $445,940,000, which includes the construction cost by the developer team, along with ADOT’s cost to administer the project.

The developer team is Kiewit-Fann Joint Venture. Key members of the team include Kiewit Infrastructure West Co.; Fann Contracting Inc.; Kiewit Engineering Group Inc.; DBI Services LLC; CONSOR Engineers LLC dba Apex Design; T.Y. Lin International; Lee Engineering; Terracon Consultants Inc.; Wheat Design Group, Inc.; Y2K Engineering; and Pinyon Environmental Inc.

Interstate 17 between Anthem Way and Sunset Point is a major stretch of highway that sees more than one million travelers every year. Because much of that travel and congestion occur on weekends, ADOT and the KFJV developer team will limit most of the lane closures to weeknights from 7 p.m. to 6 a.m. All motorists still need to be cautious and alert in the construction zone, which will be active seven days a week.

Once complete, the I-17 Improvement Project will help alleviate congestion and improve safety and traffic flow north of the metro-Phoenix region. This project will improve 23 miles of I-17, including 15 miles of roadway widening, two bridge replacements, one bridge deck replacement, 10 bridge widenings, and the installation of an eight-mile flex lane system—a new feature for Arizona’s highway system. Flex lanes are proven technology to help reduce congestion on I-17 during peak travel times and allow for traffic movement during emergency situations. I-17

The I-17 flex lanes will operate as a separate, two-lane roadway carrying one direction of traffic at a time depending on the greatest need along the steep, winding eight miles between Black Canyon City and Sunset Point. For example, the flex lanes will be able to carry heavy northbound traffic on a Friday or heavy southbound traffic on a Sunday. Similarly, ADOT will be able to open the flex lanes to accommodate traffic any time if a crash or other incident causes long delays. The flex lanes will be next to, but physically separated from southbound I-17 using concrete barriers. Access to the flex-lane entrances will be controlled by gates.

For more information about the I-17 Improvement Project, visit azdot.gov/i17-anthem-way-to-sunset-point.

Information provided by ADOT.

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