PROJECT FEATURES:
• Widening I-15 from six to eight general-purpose lanes between Sloan Road and St. Rose Parkway
• Widening and restriping I-15 from six to 10 general-purpose lanes between St. Rose Parkway and Blue Diamond Road
• Adding a High Occupancy Vehicle (HOV) lane in each direction between St. Rose Parkway and Blue Diamond Road
• Resurfacing bridges and pavement preservation at the Blue Diamond Interchange
• Construction of 10 new sound walls near qualifying residential areas throughout the corridor

PROJECT COST AND FUNDING:
The total cost for construction is $86 M. The project is paid for with 95% federal and 5% state funds. Funding sources include National Highway Performance Program (NHPP), Surface Transportation Block (STBG) and PROTECT Program grants, and state gas tax.
Contractor
Fisher Industries

SCHEDULE:
Below is a general overview of the construction schedule. The schedule is subject to change.

January-June 2025:
• Earthwork and widening NB I-15 from Cactus Ave. to Silverado Ranch Blvd.
• Earthwork and widening SB Blue Diamond Rd to Silverado Ranch Blvd.
• Drainage and electrical improvements
• Forming sound walls
• Rock landscaping
• Fence and guard rail installation
• Installing overhead signs

July-December 2025:
• Mill and fill existing asphalt NB and SB from Warm Springs Rd. to Sloan Rd.
• Electrical improvements
• Rock landscaping
• Fence and guard rail installation

TRAFFIC CONTROL:
Project working hours are nightly, Sunday nights starting at 8 p.m. through Friday evenings at 5 p.m.
• Drivers can expect lane shifts and lane reductions to occur with a reduced speed of 55 MPH.
• During daytime hours, Monday-Friday from 5 a.m. to 8 p.m., three lanes of traffic will be maintained in each direction.
• Traffic will be reduced to one lane of traffic in each direction nightly, Sunday-Friday 8 p.m. to 5 a.m.
Project Background
In 2008, an Environmental Assessment (EA) was prepared for the I-15 South Corridor Improvement Project, addressing the environmental effects of improvements along the I-15 corridor, including a portion of Las Vegas Boulevard South, between Sloan Road and Tropicana Avenue. A Finding of No Significant Impact (FONSI) for the overall project was approved by the Federal Highway Administration on April 20, 2009.
In 2022, a reevaluation of the I-15 South EA and FONSI was done to consider changing conditions and new issues that have transpired over the last several years within the I-15 South project area. The reevaluation of effects of the Phase 2 improvements was approved by FHWA and the project immediately moved forward into design. Design plans were finalized in the summer of 2023.
I-15 South Corridor Improvement Project EA_2008
I-15 South FONSI – FHWA_2009
Reevaluation_2023