The Nevada Department of Transportation (NDOT), along with the Federal Highway Administration (FHWA) and other project partners, prepared an Environmental Assessment (EA) as required by the National Environmental Policy Act (NEPA) for the Henderson Interchange Project. FHWA approved the Finding of No Significant Impact (FONSI) for the Henderson Interchange Project on October 11, 2022 Click here to read the FONSI.

NDOT is in the design-build procurement phase to hire a team that will be responsible for final design and construction of the project.

The study area limits are from Galleria Drive on I-515 to Horizon Drive on I-11, and from Valle Verde Drive on I-215 to Van Wagenen Street on Lake Mead Parkway.

Why is this Project Needed? 

The Henderson Interchange was constructed between 2004-2006, when Clark County had a population of approximately 1.5 million residents. With Clark County’s population increase to more than 2.2 million, the interchange needs to be improved to accommodate increased traffic demands. The Henderson Interchange Project is needed to address roadway deficiencies that could contribute to crashes and travel delays, restore connectivity, and accommodate regional and local plans. Traffic safety will further degrade as higher crash rates are experienced in and around the Henderson Interchange.

Purpose of the Project 

The purpose of the project is to:

• Eliminate existing roadway deficiencies in the Henderson Interchange and surrounding roadways;
• Provide transportation improvements to serve existing and future growth areas;
• Restore local traffic connectivity; and
• Accommodate regional and local plans.

Anticipated Timeline

The Nevada Department of Transportation has canceled the design-build procurement process for the Henderson Interchange project after bids came in significantly higher than expected.

With the shift away from the design-build approach, NDOT is working with the City of Henderson on the project’s schedule and scope. At this time, there is no timeline for the project. NDOT will construct the project using a phased approach with design work potentially starting before the end of the year.

We appreciate your understanding as we navigate this transition and will share further details as plans are finalized. 

Build Alternative

The Build Alternative is a crossover style interchange with the east-west highway directions crossing each other at special grade separation structures east and west of the central interchange.

Project Costs

Project costs for the Build Alternative are estimated to be between approximately $350 million- $400 million. Further refinement of the design will provide more specific cost estimates.

Public/Stakeholder Involvement

Public and stakeholder involvement are integral components of project planning, design, and delivery. State, local, and federal agencies as well as property owners, residents, and business owners have been actively engaged in a public review process and provided opportunity for input and comment. Public/stakeholder involvement and outreach will continue throughout the design and construction phases.

Click here to send us an email and let us know that you’d like to sign up for project updates (please provide your name and email address).

Resources

• Henderson Interchange Environmental Assessment
  • 01-05 Henderson Interchange EA
  • 06 Appendix A Alternatives Analysis Report_Combined
  • 07 Appendix B Public Outreach Materials_Combined
  • 08 Appendix C SHPO Correspondence_Combined
  • 09 Appendix D Traffic Noise Report_Combined
  • 10 Appendix E Section 4f Correspondence

• Henderson Interchange Project Sheet
• July 22, 2021, Public Meeting Presentation
• July 22, 2021, Public Meeting Handouts
• "Build Alternative" 3D Model Animations

Feasibility Study

• Feasibility Study
  • Appendix 01 Traffic Forecasting Memo
  • Appendix 02 Synchro Output
  • Appendix 03 Alternatives Screening Report
  • Appendix 04 Utilities
  • Appendix 05 Bridge Type Selection Study
  • Appendix 06 Conceptual Plans
  • Appendix 07 Cost Estimate Worksheets
  • Appendix 08 BCA Report
  • Appendix 09 Cost Risk Assessment
  • Appendix 10 Public Involvement Activities
  • Appendix 11 Planning and Environmental Linkages
  • Appendix 12 Summary of COH Hazmat Reports
  • Appendix 13 UPRR Coordination
  • Appendix 14 TAC Meeting Minutes
  • Appendix 15 FEMA Floodplain Documentation
  • Appendix 16 Drainage Facilities
  • Appendix 17 Limited Geotechnical Assessment

Alternatives Analysis Report

• Alternatives Analysis Report
  • Attachment 1 Option 2A E-W Exhibit
  • Attachment 1 Option 2A N-S Exhibit
  • Attachment 1 Option 3 E-W Exhibit
  • Attachment 1 Option 3 N-S Exhibit
  • Attachment 2 Option 2A E-W Guide Sign Concept Plan
  • Attachment 2 Option 2A N-S Guide Sign Concept Plan
  • Attachment 2 Option 3 E-W Guide Sign Concept Plan
  • Attachment 2 Option 3 N-S Guide Sign Concept Plan
  • Attachment 3 Option 2A Conceptual MOT Phasing