Transportation Studies

This section provides information about projects in the study/decision-making phase. Learn more about projects in the construction phase on the Projects page.

Current Studies

Interstate 10 / Loop 101 System Interchange

The Arizona Department of Transportation has initiated a study to evaluate improvements to the Loop 101 (Agua Fria Freeway) and Interstate 10 system traffic interchange (TI) in the West Valley. The purpose of this study is to evaluate alternatives to the TI that will enhance regional travel by improving safety, reducing congestion and improving connectivity.

I-11 and Intermountain West Corridor Study

The study includes detailed corridor planning of a possible high-priority interstate link between Phoenix and Las Vegas, and high-level visioning for potentially extending the corridor north to Canada and south to Mexico.

Sonoran Corridor Tier 1 Environmental Impact Statement

In February 2017, the Federal Highway Administration (FHWA) and ADOT initiated the environmental review process for the Sonoran Corridor, a potential new transportation corridor route that would connect Interstate 19 to Interstate 10 south of the Tucson International Airport. A Tier 1 Environmental Impact Statement (EIS) is being prepared as part of this process in accordance with the National Environmental Policy Act (NEPA) and other regulatory requirements.

Grand-35 Study - US 60 (Grand Avenue), 35th Avenue and Indian School Road Intersection Improvements

The study is evaluating potential transportation improvements at the intersection of Grand Avenue, 35th Avenue, Indian School Road and the BNSF railroad crossing to reduce traffic congestion, enhance safety and improve pedestrian and bicycle facilities. Potential alternatives could include raising or lowering one or more of the roadways through an underpass or overpass to reduce delays and eliminate traffic crossing the BNSF railroad.

Grand Canyon National Park Airport Master Plan

The goal of the Airport Master Plan is to provide the framework needed to guide future airport development that will cost-effectively satisfy aviation demand, while considering potential environmental and socioeconomic issues.

Grand Canyon National Park Airport Drainage Master Plan and Water Use Study

A Drainage Master Plan and Water Use Study for the Grand Canyon National Park Airport (GCN) has been initiated to assess its existing airport drainage deficiencies, level of past and current potable water use, and the evaluation of existing water treatment and storage systems.

North-South Corridor Study

A highway study in Pinal County that would improve regional connectivity, provide an additional way of getting around a growing area of the Sun Corridor, and address current and future transportation needs in a growing area is moving forward under a new environmental review process. The project scope also incorporates the extension of State Route 24 from Ironwood Drive to the North South Corridor.

ADOT Planning Study GIS Template Data

Please download the template data and submit the completed attributes table for each project recommended from the planning study to the ADOT MPD Project Manager upon completion of the planning study.  A data dictionary of the GIS data is included so users can understand what the fields represent.  Please download a new copy of the template for each study as the template may be updated.  If you have any questions please contact James Meyer of the GIS group at 602.712.8037.

More Studies


View Completed Transportation Studies