The Nevada Department of Transportation (NDOT) began improvements along nearly nine miles of Interstate 15 (I-15) South from Sloan Road to north of Warm Springs Road in January 2024. This project will aid in improving travel-time reliability, serve proposed growth in the area by increasing local mobility and access, and enhance I-15’s operational efficiency. Construction is anticipated to be completed within a 24-month period.

• 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 6 new sound walls near qualifying residential areas throughout the corridor

Ramp Closures, Lane Reductions on I-15 South Widening Project

The Nevada Department of Transportation (NDOT) is announcing an updated schedule of ramp and lane closures on Interstate 15 (I-15) for the ongoing I-15 South Widening Project. The following traffic restrictions are necessary for sound wall construction, temporary barrier rail relocation, and paving operations.

Daily (6:00 a.m. to 6:00 p.m.) Monday, December 16 to mid-January:

• Starr Avenue off-ramp from southbound I-15 closed
  *Pause in work for holiday: No closures in place from December 23 to January 5

Daily (6:00 a.m. to 6:00 p.m.) Tuesday, December 17 and Wednesday, December 18:

• St. Rose Parkway on-ramp to southbound I-15 closed

8:00 p.m. Sunday, December 15 to 5:00 a.m. Monday, December 16:

• Cactus Avenue on-ramp to southbound I-15 closed