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. The process began in 2012, when the U.S. Congress identified US 93 from Phoenix, Arizona to Las Vegas, Nevada as a high Priority Corridor as part of the Moving Ahead for Progress Act (MAP-21) and designated it as the future I-11 Corridor.
NDOT and the Arizona Department of Transportation jointly completed the I-11 and Intermountain West Corridor Study (IWCS) in 2014 to determine whether sufficient justification existed for a high capacity transportation corridor and if so, establish potential routes. In 2018 the Boulder City Bypass opened and was designated as I-11 from US 93 near the Arizona state line to the I-215 interchange in Henderson. An Alternatives Analysis was also initiated for the I-11 in Northern Nevada which led to the recommendation of one or more corridor alternatives to advance into future National Environmental Policy Act (NEPA) studies.
In 2019 NDOT initiated a Tier 1 Environmental Impact Statement (EIS) study to focus on the Las Vegas metropolitan area as the previous study for IWCS was conducted for a much larger, regional corridor. In January 2021, NDOT and FHWA determined a PEL study would achieve the same objectives in a shorter period of time. The study will utilize information and analysis already underway from the Tier 1 EIS to identify and evaluate reasonable corridor alternatives considered for I-11 through the Las Vegas metropolitan area.
The result of the PEL process will select an I-11 corridor through the Las Vegas metropolitan area, between the Arizona border on US 93 and the vicinity of Kyle Canyon Road on US 95.
Late ‘90s NDOT and ADOT evaluate Hoover Dam as US 93 bottleneck
2001 Colorado River Bridge EIS ROD
2010 O’Callaghan-Tillman Memorial Bridge opens
2012MAP-21 Act designates US 93 as future I-11 (Las Vegas to Phoenix) *1
2014 Intermountain West Corridor Study completed *2
2015 Fast Act identifies an I-11 corridor between I-80 in western Nevada and Las Vegas using US 95
2018 NDOT completes Boulder City Bypass *3
2018 I-11 Northern Nevada Alternatives Planning Study Completed *4
2019 ADOT releases I-11 Tier 1 DEIS (Wickenburg to Nogales)
2019-2020 NDOT commences I-11 Las Vegas Metropolitan Area Tier 1 EIS *5
2021 NDOT transitions from Tier 1 EIS to I-11 Las Vegas Metropolitan Area PEL Study *6
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.
In 2019, NDOT initiated a Tier 1 Environmental Impact Statement (EIS) for the Las Vegas metropolitan area to evaluate potential corridors with the intent to obtain a Record of Decision (ROD) from the Federal Highway Administration (FWHA) and to select a single corridor upon which to build future I-11 projects.
In 2021, NDOT initiated a PEL for the Las Vegas metropolitan area utilizing information and analysis already underway. The PEL study evaluates broad corridors for the identification of the location of the I-11 facility. The result of the study will produce a joint FHWA and NDOT Decision Document that will state not only their approval of the PEL study, as is required for an appropriate PEL process, but also include FHWA and NDOT’s approval of the recommended alternative.
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:
- This is the 1st item
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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.