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Jefferson Preparatory High School | December 12, 2019

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Traffic at Pinnacle Peak

Aimee Hand

ADOT is making improvements to the interchange at Pinnacle Peak, which have and will continue to affect how we get to campus. Here is an important update.

Interstate 17, Pinnacle Peak Road and additional ramps set to close this Friday, Nov. 15; I-17 frontage roads reconfigured north of Pinnacle Peak Road

Allow EXTRA TIME and USE DETOURS while I-17 is closed this weekend

Drivers should prepare for major closures in north Phoenix this weekend as the Arizona Department of Transportation makes big changes at Interstate 17 and Pinnacle Peak Road. Among them: The original Pinnacle Peak Road bridge will be demolished and removed. ADOT advises motorists to allow extra travel time and be prepared to use detours while the following closures and restrictions are in place:

  • North- and southbound I-17 will be closed between Deer Valley and Happy Valley roads from 10 p.m. Friday, Nov. 15, to 10 p.m. Sunday, Nov. 17. Detours:
    • Northbound drivers: Exit at Deer Valley Road and use northbound 19th Avenue to Jomax Road to I-17.
    • Southbound drivers: Exit at Jomax Road and use southbound 19th Avenue to Deer Valley Road to I-17.
  • Pinnacle Peak Road will be closed in both directions at I-17 while bridge demolition is underway at the same time. All on- and off-ramps also will be closed. Detours:
    • From west of I-17: Use southbound 35th Avenue to eastbound Deer Valley Road to northbound 19th Avenue to Pinnacle Peak Road.
    • From east of I-17: Use southbound 19th Avenue to westbound Deer Valley Road to northbound 35th Avenue to Pinnacle Peak Road.

Changes at Pinnacle Peak Road and I-17

When I-17 and Pinnacle Peak Road reopen late Sunday, drivers will use a newly constructed bridge crossing and two new ramps at Pinnacle Peak Road: the southbound I-17 exit ramp and the northbound I-17 on-ramp. The new crossing is one of two that will make up the tight-diamond interchange currently under construction. Removing the old Pinnacle Peak Road bridge clears the way for construction of a second crossing over the freeway. The side-by-side bridges will accommodate two through lanes and turn lanes in each direction when the project is complete next year.

On- and off-ramp closures – I-17 and Pinnacle Peak Road

Reconstruction of the remaining two freeway ramps is scheduled to begin late Friday and continue for several weeks. Drivers must use detours while the following around-the-clock ramp closures are in place:

  • The southbound I-17 on-ramp at Pinnacle Peak Road will be closed from 10 p.m. Friday, Nov. 15, to 10 p.m. Sunday, Dec. 22.
  • The northbound I-17 exit ramp at Pinnacle Peak Road will be closed from 10 p.m. Friday, Nov. 15, to 5 a.m. Monday, Jan. 6, 2020.

Frontage Road Reconfigurations

ADOT will temporarily reconfigure sections of the north- and southbound I-17 frontage roads between Pinnacle Peak and Deer Valley roads while ramp reconstruction at I-17 and Pinnacle Peak Road continues.

  • The southbound I-17 frontage road will become a temporary two-way road between Premier RV and Self-Storage and Adobe Drive from Saturday, Nov. 17, through Sunday, Dec. 22.
  • The northbound I-17 frontage road will become a temporary two-way road between Williams Drive and the roadway south of Adams Traditional Academy/north of the Phoenix Metro RV Park from Saturday, Nov. 17, through Monday, Jan. 6, 2020.

Reminder: An 11-foot vehicle-width restriction remains in place on north- and southbound I-17 between Pinnacle Peak and Happy Valley roads.

Learn more about the I-17 traffic reconstruction project at Pinnacle Peak and Happy Valley roads on the project web page.

Schedules are subject to change based on weather and other unforeseen factors. For more information, please call the ADOT Bilingual Project Information Line at 855.712.8530 or go to azdot.gov/contact and select Projects from the drop-down menu. For real-time highway conditions statewide, visit ADOT’s Traveler Information Site at www.az511.gov, follow ADOT on Twitter (@ArizonaDOT) or call 511, except while driving.