I-15/CC-215 Northern Beltway Interchange

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Project Description

Phase 4 of the I-15 North Corridor consists of designing new ramps, flyovers and street connections to complete a system-to-system interchange configuration where the northern I-15 meets the Clark County 215 Las Vegas Beltway.

The project also includes the addition of I-15 southbound ramps for the Tropical Parkway interchange. The Tropical Parkway interchange will use the existing I-15 northbound ramps as modified to work in concert with new flyover ramps for the I-15/CC-215 interchange. The project will construct sections of Centennial Parkway and Tropical Parkway to provide needed connections.

(Northern view)
I--15 N Phase IV

 (Southern view)I-15 SB CC215 Overview

The images above is a preliminary design of the completed project. 

What Are We Doing?

  • Constructing new direct connect ramps between I-15 and Clark County 215 (Las Vegas Beltway) interchange
  • Building I-15 southbound ramps and reconstructing I-15 northbound ramps for the I-15 and Tropical Parkway interchange
  • Reconfiguring local streets to improve traffic flow around the interchange
  • Providing landscape and aesthetic enhancements

                          Existing Alignment                                                                         Future Plans                                                       

18-0704 8-5x11 EXHIBIT









 Note: Click the photos above to enlarge.

Project Benefits

  • Improve safety
  • Improve travel time reliability
  • Improve access to areas planned for development in North Las Vegas
  • Improve operations with a full freeway-to-freeway connectivity

Dec. 4 Public Meeting Materials


  • Total project: Between $123 and $144.5 million
  • Engineering: Between $10 and $11 million
  • Right-of-Way: Between $7 and $7.5 million
  • Construction: Between $106 and $126 million

** The federal government is providing 95 percent of the funding while the state is investing 5 percent into the project.


Design work on this project began in 2015 and was completed in the third quarter of 2019. NDOT anticipates starting the construction project in the first quarter of 2020 and finishing it in the third quarter of 2022.

Project Contact

Dwayne Wilkinson, PE
Nevada Department of Transportation