Comment Sought on Engineering, Environmental Phase of Study



ADOT seeks public input on Sonoran Corridor in Pima County



TUCSON – The Arizona Department of Transportation is seeking public input as it begins an engineering and environmental study of the Sonoran Corridor, a proposed freeway in the Tucson region that would connect Interstates 19 and 10, south of Tucson International Airport. 


ADOT has formally initiated a Tier 2 Environmental Impact Statement (EIS) for the Sonoran Corridor. The Notice of Intent to prepare a Tier 2 EIS is currently available on the study website at azdot.gov/SonoranCorridor.


The study will evaluate potential build alternatives for the Sonoran Corridor alignment, interchange locations and other features, as well as a no-build – or do nothing – alternative. The study will ultimately identify a selected alternative based on public, agency and tribal government input and technical analyses.


During the current study phase, ADOT is seeking public input on the project’s preliminary purpose and need, preliminary range of alternatives for the freeway alignment and other considerations to be evaluated in the study. ADOT will hold public meetings in June to provide an overview of the study and seek input on a preliminary range of alternatives for the highway alignment and the project’s purpose and need. The public comment period lasts through July 18.


Two public meetings are scheduled:

  • An in-person meeting from 5:30 to 7 p.m., Tuesday, June 17, at Sahuarita Unified School District Auditorium, 350 W. Sahuarita Road, Sahuarita. A presentation will begin at 6 p.m.
  • A virtual public meeting from 6 to 7 p.m. Wednesday, June 18. Visit azdot.gov/SonoranCorridor for virtual meeting sign-in details.


The same information will be presented at each meeting. Meeting presentations and materials will be posted to the study website for those unable to attend.


The corridor, also known as State Route 410, is under study to: improve vehicle mobility and the transportation system, improve access to existing and future activity centers, reduce persistent traffic backups and road congestion, address existing and future high-growth areas, improve and shorten east-west freight movement to and from Mexico and southern Arizona, add a faster connection to Tucson International Airport and shorten east-west freight movement between southern Arizona and Mexico.


Ultimately the study will:

  • Refine the purpose and need of the proposed project
  • Develop and evaluate a range of 400-foot-wide freeway alignment alternatives within the 2,000-foot corridor, including a “no-build” alternative
  • Evaluate environmental considerations and proposed mitigation
  • Develop design concepts and features, such as interchange locations and bridges
  • Provide opportunities for public and stakeholder input throughout the process
  • Select a preferred freeway alternative, which would include the alignment, interchange locations and other design features

Comments may be submitted in any of the following ways through July 18:

Back-to-School: Southwest Gas Partners with Schools, Colleges, and Nonprofits to Open Doors for the Next Generation

September 9, 2026
Programs help students build skills, explore careers, and prepare for the future PHOENIX — Across Southwest Gas’ service territory in Arizona, the company and the Southwest Gas Foundation are partnering with schools, colleges, and nonprofit organizations to support students through essential resources, hands-on learning, safety education, mentorship, scholarships, and career training. “Our employees live and work in the communities we serve, so supporting local schools and programs is personal to us,” said Justin Brown, President and CEO of Southwest Gas. “By working alongside trusted partners, we can help students feel better prepared, explore their interests, and see greater possibilities for their future.” Programs and partnerships across Southwest Gas’ service territory in Arizona include: · Arizona Educational Foundation’s (AEF) teachSTEM Program Since 2024, the Southwest Gas Foundation has supported the AEF’s teachSTEM program. The program provides educators with hands-on STEM training, resources, and mentorship, while inspiring students to explore and pursue STEM careers. The program has reached more than 5,000 students, 78% of whom attend Title I schools. · Energy Safe Kids with the National Energy Foundation (NEF) For nearly 30 years, Southwest Gas has partnered with the NEF to promote energy education and safety awareness in schools. Through the Energy Safe Kids program, elementary and middle school teachers receive curriculum that helps students recognize and respond to a suspected natural gas leak, identify natural gas appliances and pipeline markers, and understand the importance of calling 811 before digging. Last year, 130 schools throughout Southwest Gas’ service territory used the program. · Girls in STEM at the Arizona Science Center The Southwest Gas Foundation has supported the Arizona Science Center’s Girls in STEM program since 2021. This initiative introduces girls in grades 4-8 to science and engineering through hands-on activities and mentorship. These experiences help students explore STEM concepts and envision careers in the field. · Natural Gas Program at Estrella Mountain Community College Southwest Gas partners with Estrella Mountain Community College on a hands-on Natural Gas Program that introduces students to careers in the utility and construction industries. Courses taught by current Southwest Gas employees provide experience with tools and safety practices used in the field. · Share the Spirit Shoes for Kids With the support of a $5,000 contribution from the Southwest Gas Foundation, Southwest Gas employees partnered with the Share the Spirit Foundation to provide 90 students from Title I schools with new shoes and socks during the Shoes for Kids event on August 28. As part of the Company’s volunteer program BLUE (Building Lives Up Everywhere), Southwest Gas employees served as personal shoppers, helping the students select new shoes that fit comfortably and help boost their confidence as they begin the school year. · Summer Internship Program Southwest Gas offers a paid Summer Internship Program for currently enrolled college and university students across the U.S. The 10-week program offers hands-on experience and professional development opportunities across a variety of business functions. Applications are open from January through April, with the program starting in June. Last year, more than 2,900 students from across the country applied for the internship program. Together, these collaborative efforts help open doors for opportunity and reflect Southwest Gas’ long-standing commitment to enriching lives and strengthening communities. For more information about Southwest Gas and its community partnerships, visit www.swgas.com/community. About Southwest Gas Southwest Gas Corporation is a dynamic energy company committed to exceeding the expectations of our over two million customers throughout Arizona, California, and Nevada by providing safe, reliable, and affordable service while pursuing innovative sustainable energy solutions to fuel the growth in its communities. For more information about how Southwest Gas is supporting a sustainable energy future, please visit www.swgas.com. About The Southwest Gas Foundation The Southwest Gas Foundation has spent six decades partnering with 501(c)(3) organizations to open doors of opportunities, provide support in times of need, and create a legacy of impact that benefits generations to come. Funded by shareholders, the Foundation is committed to enriching lives and strengthening communities. For more information, please visit www.swgas.com/community.
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