Interstate 17 (Black Canyon Freeway)
Interstate 17 (Black Canyon Freeway)
Interstate 17 (Black Canyon Freeway)
Interstate 17 (Black Canyon Freeway)
Interstate 17 (Black Canyon Freeway)
Interstate 17 (Black Canyon Freeway)
Interstate 17 (Black Canyon Freeway)
Interstate 17 (Black Canyon Freeway) North of Loop 101

Improvements ~ Overview

A massive $153 million construction project to improve traffic flow on I-17 between Loop 101 and Anthem Way by adding new lanes and better freeway access was completed in spring 2010. The improvements include two new lanes in each direction between Loop 101 and State Route 74 (Carefree Highway), one additional lane between Carefree Highway and Anthem Way, four new interchanges and reconstructing the interchanges at Carefree Highway and Deer Valley Road.

Future widening of I-17 between Anthem Way and New River by one lane in each direction is planned to occur after 2026.

These improvements are included in the 20-year Regional Transportation Plan (RTP), the blueprint for all transportation planning in Maricopa County. Funding for transportation improvements included in the RTP is provided by a regional half-cent sales tax, which was approved by voters in 2004 and became effective in January 2006.

The RTP was originally divided into four phases, based on forecasts of when the funding was anticipated to be available for those improvements. Responding to federal transportation planning requirements, the RTP is being extended through 2031 by the Maricopa Association of Governments (MAG) to maintain a 20-year planning horizon. As a result, a fifth phase has been added to the RTP, covering the period from 2026 through 2031. Consistent with federal planning guidelines, funding for transportation projects is based on revenue sources that are considered to be reasonably available for the planning period. According to MAG, this assumes that for planning purposes funding sources with a long history of providing funding in the past will continue into the future. 

In fall 2009, due to declining sales tax revenues and decreases in other transportation revenue sources to fund improvements, MAG recommended that some future projects be deferred to Phase V of the plan. As part of the planning process, project costs and funding levels are continuously monitored, and the RTP is periodically updated to take advantage of cost savings or changes in the transportation revenue outlook. According to MAG planners, this can result in the acceleration of projects that were formerly deferred.  For more information about RTP projects deferred to Phase V in the MAG tentative scenario, please visit the MAG Web site.

The planned improvements along I-17 north of Loop 101 are described below, including the timeframe or phase in which the improvements are scheduled to occur.


I-17 from Loop 101 to State Route 74 (Carefree Highway)
Funding in the Regional Transportation Plan for this section of I-17 includes:  
  • Additional lanes (one general purpose and one HOV),
  • New interchanges at Jomax Road, Dixileta Drive, Sonoran Boulevard (formerly Dove Valley Road) and Lone Mountain Road (at the future Loop 303 alignment), and improved interchanges at Deer Valley Road and Carefree Highway,
  • Frontage roads extended to Dixileta Drive and converted to one way to improve safety and traffic flow; and
  • Improved drainage.

All new freeway lanes between Loop 101 and SR 74 (Carefree Highway) were opened to traffic in late 2009. The application of rubberized asphalt pavement on the new lanes between Jomax Road and Carefree Highway was completed in spring 2010, when temperatures were ideal for the asphalt to cure properly.   

Interchange projects at Jomax Road, Dixileta Drive, Carefree Highway and Deer Valley Road have been completed.
   

I-17 from SR 74 (Carefree Highway) to Anthem Way
The Regional Transportation Plan identifies the addition of a third lane and a HOV lane in each direction along this section of I-17.

Originally scheduled in Phase IV (2021-2025) of the Regional Transportation Plan, construction of the general purpose lane was advanced with funding from the American Recovery and Reinvestment Act of 2009 (Recovery Act). Construction of the general purpose lane began in summer 2009. The new lanes were completed and opened to traffic in early 2010, nearly six months ahead of schedule. The application of rubberized asphalt pavement on the new lanes between Carefree Highway and Anthem Way - as well as the existing section of I-17 between Anthem Way and New River Road – was completed in spring 2010, when temperatures were ideal for the asphalt to cure properly.

A future project to construct an HOV lane on I-17 between Carefree Highway and Anthem Way has been deferred to Phase V (2026-2031) of the RTP.
   

I-17 from Anthem Way to New River
A third general purpose lane in each direction along this section of I-17 has been deferred to Phase V (2026-2031) of the Regional Transportation Plan. An initial study has been completed for these improvements, but a full environmental process needs to be conducted to meet National Environmental Policy Act (NEPA) requirements.
   

Regional Transportation Plan Phases

Phase I   FY 2006-2010               Phase III   FY 2016-2020
Phase II   FY 2011-2015   Phase IV   FY 2021-2025
Phase V   FY 2026-2031        

I-17 Widening Projects (North of Loop 101)
I-17 Traffic Interchange Projects (North of Loop 101)

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On The Move Our Valley Freeway System is part of the 2004 voter-approved Regional Transportation Plan. We are working hard with our transit partners to implement the voters’ vision and are committed to quality, safety, open communication with our neighbors, and minimal inconvenience to the traveling public.