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

In December 2015, the US Congress approved the Fixing America’s Surface Transportation (FAST) Act, which is a 5-year legislation to improve the Nation’s surface transportation infrastructure. The FAST Act formally designates I-11 throughout Arizona, reinforcing ADOT’s overall concept for the I-11 Corridor that emerged from the prior IWCS study.

History of the I-11 Corridor

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: