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NDOT Planning and Environmental Linkages Study. Las Vegas Metropolitan Area. A logo with the i-11 symbol.

Building Nevada's Future

Background

I-11 is envisioned as a 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.

Learn more - Background and History

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, now referred to as the Henderson Interchange.

In 2019, NDOT initiated a Tier 1 Environmental Impact Statement (EIS) to focus solely on the Las Vegas metropolitan area. In January 2021, NDOT and FHWA determined a PEL study would achieve the same objectives in a shorter time period utilizing information and analysis already underway to identify and evaluate corridor alternatives for I-11.

The result of the PEL process will select a western or central corridor through the Las Vegas metropolitan area, between the Arizona border on US 93 and the vicinity of Kyle Canyon Road (SR 157) on US 95. The final PEL report and identification of a recommended I-11 corridor is expected for delivery in Fall 2022. Once complete, I-11 is meant to connect regional economies and will provide an important link for extending I-11 south of Las Vegas as part of a contiguous Interstate Highway System.

For more information on PEL studies please visit the FHWA website.

History

Late '90s
NDOT and ADOT evaluate Hoover Dam as US 93 bottleneck
Colorado River Bridge EIS ROD
2001
2010
O’Callaghan-Tillman Memorial Bridge opens
MAP-21 Act designates US 93 as future I-11 (Las Vegas to Phoenix) 1*
2012
2014
Intermountain West Corridor Study completed 2*
Fast Act identifies an I-11 corridor between I-80 in western Nevada and Las Vegas using US 95
2015
2018
NDOT completes Boulder City Bypass 3*
I-11 Northern Nevada Alternatives Planning Study Completed 4*
2018
2019
ADOT releases I-11 Tier 1 DEIS (Wickenburg to Nogales)
NDOT commences I-11 Las Vegas Metropolitan Area Tier 1 EIS 5*
2019-2020
2021
NDOT transitions from Tier 1 EIS to I-11 Las Vegas Metropolitan Area PEL Study 6*
1*

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.

2*

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.

3*

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.

4*

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.

5*

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.

6*

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 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, visit the ADOT I-11 project page

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