05 November 2021

ADOT Identifies Plan for 20.47-Mile Sonoran Corridor Route in Pima County

This plan for the preferred Corridor for a new transnational  has been in-the-works for a long time.
PLEASE NOTE: These studies, which are not yet funded, would include additional analysis and more opportunities for public review and comment.
The Final Tier 1 Environmental Impact Statement (EIS) and Record of Decision (ROD), which was released Friday, Nov. 5, identifies the selected corridor, which stretches between Interstates 19 and 10, south of the Tucson International Airport in Pima County.  
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ADOT Selects final Sonoran Corridor route in Pima County

Sonoran Corridor Tier 1 Final Environmental Impact Statement and Record of Decision

Following several years of study, technical analysis and input from communities and stakeholders, the Arizona Department of Transportation has selected a final 20.47 mile corridor through Pima County. The Final Tier 1 Environmental Impact Statement (EIS) and Record of Decision (ROD), which was released Friday, Nov. 5, identifies the selected corridor, which stretches between Interstates 19 and 10, south of the Tucson International Airport in Pima County. 

A continuous, access-controlled transportation corridor between I-19 and I-10 would:

  • Improve access to future activity centers
  • Improve regional mobility
  • Improve connectivity
  • Integrate the region’s transportation network
  • Address existing and future population and economic growth
  • Provide an alternative to avoid congestion on I-10 and I-19 
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The combined Tier 1 Final EIS/ROD, along with its supporting documentation, is available on the study’s website at azdot.gov/Sonoran Corridor.

 

In addition, hard copies of the combined Tier 1 Final EIS/ROD document are also available for viewing at the following locations during normal business hours:

> Subsequent Tier 2 environmental and engineering studies would need to be conducted as part of the NEPA process to further refine the selected 1,500-foot Sonoran Corridor to identify a recommended 400-foot freeway alignment and identify planned interchange locations and other project elements. 

> The Final Tier 1 EIS includes a phased implementation plan with preliminary recommendations for how the Sonoran Corridor could move forward into Tier 2 studies. The phased implementation plan includes smaller segments of the selected corridor alternative that may advance as separate, independent projects.

These studies, which are not yet funded, would include additional analysis and more opportunities for public review and comment.

For more information about the Sonoran Corridor Study or to view the project fact sheet, please visit azdot.gov/sonorancorridor.

General comments or questions about the study can be submitted to ADOT through the following methods:

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, Need to know where a milepost is? Click on the "Mile Markers" icon on the map at www.az511,com. Follow ADOT on Twitter (@ArizonaDOT) or call 511, except while driving.

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