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Interstate 11 Corridor Tier 1 Environmental Impact Statement, Nogales to Wickenburg
Interstate 11 Corridor Tier 1 Environmental Impact Statement, Nogales to Wickenburg


Study Updates and Mailing List Short study updates are frequently posted to the blog on the Good to Know page to inform the public and stakeholders when new information is available and to provide additional information on study-specific elements. Those on the study mailing list will receive an email each time a new update is posted. Join the Interstate - (I-11) Tier 1 Environmental Impact Statement (EIS) Mailing List to receive email blasts. Scoping and Alternative Selection

To initiate the study in 2016, public and agency scoping meetings were held to understand the scope of issues to be addressed during the study. In 2017, the alternatives development phase of the study incorporated this scoping input to develop a wide range of alternatives, with the goal of narrowing them to a reasonable range of alternatives to be studied further throughout the phases of the study. These alternatives represent both public and agency input and meet the corridor’s Purpose and Need. The reasonable range of alternatives evaluated in the Tier 1 EIS includes the No Build Alternative.

Draft Tier 1 EIS

The EIS analysis phase is a detailed analysis of potential social, economic and natural environmental impacts of the proposed corridor options. The Draft Tier 1 EIS documented this analysis process, identified a Recommended Alternative with the No Build Alternative, and was presented to the public for review and comment from April 5, 2019 through July 8, 2019.

Final Tier 1 EIS

Based on the comments received, a Final Tier 1 EIS report will be prepared, outlining a Preferred Corridor Alternative and the No Build Alternative for I-11.

Record of Decision

After public review of the Final Tier 1 EIS, FHWA will issue a Record of Decision (ROD) that will present a Selected Corridor Alternative or the No Build Alternative

If the ROD selects a Build Corridor Alternative, a Phased Implementation Plan would be developed for it as part of the Tier 1 EIS process. A Phased Implementation Plan includes smaller segments of a corridor alternative that may advance as separate, independent projects.

For more information on the environmental process, visit the Environmental Process page.