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

Nighttime Ramp Closures and Lane Reductions on I-15 South Widening Project

The Nevada Department of Transportation (NDOT) is announcing 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. The schedule is subject to change.

(8:00 p.m. to 12:00 a.m.) Monday, January 27:

• Cactus Avenue on-ramp to northbound I-15 closed*

(12:00 a.m. to 5:00 a.m.) Tuesday, January 28:

• Cactus Avenue off-ramp to northbound I-15 closed*

Nightly (8:00 p.m. to 5:00 a.m.) Tuesday, January 28 to Thursday, January 30:

• Northbound I-15 reduced to two lanes between St. Rose Parkway and Starr Avenue

Daily (6:00 a.m. to 6:00 p.m.) Monday, January 27 through Friday, January 31:

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

Nightly (8:00 p.m. to 5:00 a.m.) Thursday, January 30 through Friday, February 7:

• Northbound I-15 reduced to one lane between Sloan Road and St. Rose Parkway

*Cactus Avenue on- and off-ramps will not be closed at the same time. The off-ramp will not be closed until the on-ramp is open.