A small number of freeway closures are planned in the Phoenix area this weekend from January 9 to 12, according to the Arizona Department of Transportation (ADOT). The scheduled work includes mostly overnight closures on Interstate 10 in downtown Phoenix for tunnel cleaning and maintenance. Drivers are advised to allow extra travel time and use detour routes during these restrictions.
Eastbound I-10 will be closed between the I-17 “Stack” interchange and State Route 51 “Mini-Stack” interchange from 9 p.m. Friday until 9 a.m. Saturday for tunnel maintenance. The primary detour directs eastbound traffic onto southbound I-17, reconnecting with I-10 near Sky Harbor Airport.
Westbound I-10 will be closed between the I-17 “Split” interchange near Sky Harbor Airport and Seventh Avenue from 9 p.m. Saturday to 9 a.m. Sunday for tunnel maintenance. Several ramps, including the southbound SR 51 ramp to westbound I-10 and the southbound I-17 ramp to westbound I-10 near Sky Harbor Airport, will also be closed. The westbound Loop 202 ramp to westbound I-10 remains open, but traffic must exit at Seventh Street. The main detour sends westbound drivers onto northbound I-17, reconnecting with I-10 at the Stack interchange north of Van Buren Street. Drivers in southeast Valley or Chandler can consider using Loop 202 (South Mountain Freeway) toward I-10 near 59th Avenue.
The eastbound Loop 101 (Pima Freeway) ramp to southbound State Route 51 will close from 5 a.m. Saturday until 7 a.m. Sunday for a widening project, along with the southbound Black Mountain Boulevard ramp to SR 51. Detours suggest exiting Loop 101 at Cave Creek Road or Tatum Boulevard and using Union Hills Drive for access; those using Black Mountain Boulevard can take Tatum Boulevard south to Union Hills Drive west.
ADOT notes that schedules may change due to weather or other factors.
ADOT plans and constructs new freeways, adds lanes, and makes other improvements as part of the Regional Transportation Plan for Maricopa County. Funding for most projects comes from Proposition 400—a sales tax approved by voters in Maricopa County in 2004—and Proposition 479, which was passed in November 2024 to extend this tax for future transportation projects.
“Most improvement projects are currently funded in part by Proposition 400, a dedicated sales tax approved by Maricopa County voters in 2004. Voters also approved Proposition 479 in November 2024, extending the existing half-cent tax to fund future transportation projects in the Phoenix region.”
Real-time highway conditions are available through ADOT’s Arizona Traveler Information site at AZ511.gov, via their app on Apple or Android devices, or by calling 511.
The Arizona Department of Transportation manages highway infrastructure across Arizona and provides traveler information through systems such as AZ511.gov official website. ADOT is responsible for multimodal systems including highways, aviation operations, rest areas and monitoring tools official website. Under director Jennifer Toth official website, ADOT oversees planning, design, construction and operation of state transportation systems while partnering with regional entities on corridor studies and infrastructure enhancements official website.
