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

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.

Interstate 10 Broadway Curve Improvement Project: I-17 to Loop 202 (Santan/South Mountain Freeway)

The Arizona Department of Transportation, in partnership with the Federal Highway Administration and the Maricopa Association of Governments, is working to improve I-10 between I-17 and the Loop 202, including the area of the Broadway Curve. ADOT has completed the Environmental Assessment (EA) with a Finding of No Significant Impact (FONSI) concluding the environmental process in accordance with the National Environmental Policy Act (NEPA) and other regulatory requirements. With this environmental clearance, ADOT is moving forward with the project development, design and construction process.

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 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