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In March 2016, the Federal Highway Administration (FHWA) and the Arizona Department of Transportation (ADOT) initiated the environmental review process for a portion of the Interstate 11 (I-11) Corridor, specifically from Nogales to Wickenburg, Arizona. An Alternatives Selection Report (ASR) and Tier 1 Environmental Impact Statement (EIS) will be prepared as part of this process in accordance with the National Environmental Policy Act (NEPA) and other regulatory requirements.
This effort builds upon the prior I-11 and Intermountain West Corridor Study (IWCS) completed in 2014, which was a multimodal planning effort led by ADOT and the Nevada Department of Transportation (NDOT), in partnership with FHWA, Federal Railroad Administration (FRA), Maricopa Association of Governments (MAG), Regional Transportation Commission of Southern Nevada (RTC), and other key stakeholders.
The IWCS broadly defined the I-11 corridor from Arizona’s border with Mexico through northern Nevada. In December 2015, the US Congress approved the Fixing America’s Surface Transportation (FAST) Act, a five-year legislation to improve the nation’s surface transportation infrastructure, which formally designates I-11 throughout both states. Subsequent planning efforts, such as this Tier 1 EIS, will continue to advance corridor planning.
For additional information on the previous study, please visit i11study.com/WC-Study.
The Purpose and Need Statement is a fundamental part of the NEPA process, providing the basis for identifying, evaluating, and screening corridor alternatives. It will be one of the key components in determining and selecting a Preferred Corridor Alternative for I-11. The Purpose and Need is based on key transportation-related problems and issues identified in the previous I-11 IWCS and through agency and public input received during the scoping process.
The number of corridor alternatives will then be reduced and carried forward in the Draft Tier 1 EIS document. The Draft Tier 1 EIS document will continue to assess in further detail the potential social, economic, and natural environmental impacts of the No-Build Alternative (the do-nothing option) and a reasonable range of corridor alternatives, including a phased implementation plan. A phased implementation plan includes smaller segments of a corridor alternative that may advance as separate, independent projects following completion of the Tier 1 EIS process. The Draft Tier 1 EIS document also will identify a Preferred Alternative (expected to be 2000’ wide). If a build alternative is identified, then FHWA will issue a combined final decision document known as a Final Tier 1 EIS and Record of Decision, which will identify the Selected Corridor Alternative.
The purpose of the project is to:
The need for this project results from the following issues and opportunities:
A copy of the Final Purpose and Need report is included on the Documents page.
This ADOT-led study builds upon the prior I-11 and Intermountain West Corridor Study (IWCS) completed in 2014, which was a multimodal planning effort that involved ADOT, the Nevada Department of Transportation, FHWA, Federal Railroad Administration, Maricopa Association of Governments, Regional Transportation Commission of Southern Nevada, and other key stakeholders. Upon completion of the IWCS study, FHWA and ADOT are continuing to advance the I-11 Corridor study in Arizona for the approximate 280-mile section between Nogales and Wickenburg, as shown on the corridor study area map.
For additional information on the previous study, please visit: i11study.com/IWC-Study