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Paving Nevada's Future


The I-11 Corridor is envisioned as a new major north-south multimodal corridor that will provide enhanced transportation mobility and goods movement while creating a foundation for robust economic vitality for the region. NDOT, in cooperation with the FHWA, is advancing the development of the I-11 Corridor Tier 1 EIS through the Las Vegas metropolitan area. For information on a Tier 1 EIS click here.


  • Late ‘90sNDOT and ADOT evaluate Hoover Dam as US 93 bottleneck


  • 2001Colorado River Bridge EIS ROD


  • 2010O’Callaghan-Tillman Memorial Bridge opens


  • 1 2012MAP-21 Act designates US 93 as future I-11 (Las Vegas to Phoenix)


  • 2 2014Intermountain West Corridor Study completed


  • 2015Fast Act identifies an I-11 corridor between I-80 in western Nevada and Las Vegas using US 95


  • 3 2018NDOT completes Boulder City Bypass


  • 4 2018I-11 Northern Nevada Alternatives Planning Study Completed


  • 2019ADOT releases I-11 Tier 1 DEIS (Wickenburg to Nogales)


  • 2019NDOT commences Las Vegas Valley Metropolitan Area I-11 Tier 1 EIS



The U.S. Congress, with its 2012 passage of the Moving Ahead for Progress in the 21st Century Act (MAP-21), identified US 93 from Phoenix, Arizona, to Las Vegas, Nevada, as a High Priority Corridor in the National Highway System and designated it as the future I‐11.


In 2014, NDOT and the Arizona Department of Transportation (ADOT) jointly completed the I-11 and Intermountain West Corridor Study (IWCS) that encompassed a broad study area for the Intermountain West region from Mexico to Canada. The purpose of the IWCS was to determine whether sufficient justification existed for a new high-capacity priority transportation corridor, and if so, to establish the likely potential routes. The study established the corridor vision, developed justification, and defined an implementation plan to move forward. It was intended to provide a high-level overview of the corridor opportunities and foundation for subsequent corridor alternatives and environmental studies.


The Boulder City Bypass that opened in 2018 was designated as I-11 from US 93 near the Arizona state line to the I-215 interchange in Henderson.


NDOT initiated an Alternatives Analysis effort for the I-11 Corridor between the northwestern edge of Las Vegas and I-80 in western Nevada. This led to the recommendation of one or more corridor alternatives to advance into future National Environmental Policy Act (NEPA) studies. The planning and outreach process, analysis, and findings were complete in 2018 and documented in a Planning and Environmental Linkages (PEL) document.

The IWCS defined a “corridor vision” for the I-11:

Serving the nation’s north-south, multimodal transportation needs from Mexico to Canada, the I-11 and Intermountain West Corridor will provide a vital multimodal connection between the Arizona Sun Corridor and Las Vegas. It is also envisioned to promote freight linkages between the new and expanding ports in Mexico and Canada, existing U.S. West Coast ports, and future inland ports and commerce centers crucial to distributing goods across North America. These linkages will stimulate the development of new crossroads, spurring community and economic development opportunities spanning the entire corridor. Effective inclusion of multimodal infrastructure elements, such as natural resources, power, telecommunication, freight rail, and potentially passenger rail, serve as the foundation of a stronger and more diversified economy for the Western U.S. The I-11 and Intermountain West Corridor will become a major, multimodal, north-south, transcontinental corridor through the Intermountain West.

In addition, the IWCS identifies the following purpose:

To provide an access‐controlled, north‐south transportation corridor that will connect important metropolitan areas and markets in the Intermountain West with Mexico and Canada to support improved regional mobility for people and freight, and provide enhanced opportunities for trade and economic development.

ADOT and FHWA continued to study the I-11 Corridor in Arizona through preparation of an I- 11 Tier 1 EIS. In April 2019, ADOT published the Draft Tier 1 Environmental Impact Statement, Nogales to Wickenburg and is currently reviewing public input and feedback. For more information on the ADOT I-11 Project click here.

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