The Nevada Department of Transportation (NDOT) is announcing updated overnight lane and ramp closures on Interstate 15 (I-15) as part of the ongoing I-15 South Widening Project. The following traffic restrictions are necessary for milling, profiling, and paving operations. The schedule is subject to change due to weather and other factors.

Nightly (8:00 p.m. to 5:00 a.m.) Sunday, August 17 to Friday, August 22:

• Northbound I-15 reduced to one lane from Starr Ave to Blue Diamond Rd
• Southbound I-15 reduced to one lane from Blue Diamond Rd to Starr Ave
• Intermittent ramp closures on northbound I-15 between Cactus Ave and Blue Diamond Rd

8:00 p.m. Sunday, August 17 to 5:00 a.m. Monday, August 18:

• Northbound I-15 auxiliary lane between Silverado Ranch Blvd on-ramp and Blue Diamond Rd off-ramp closed
• Northbound I-15 off-ramp to Blue Diamond Rd closed
• Northbound I-15 off-ramp to Cactus Ave closed

8:00 p.m. Monday, August 18 to 5:00 a.m. Tuesday, August 19:

• Northbound I-15 off-ramp to Cactus Ave closed

8:00 p.m. Tuesday, August 19 to 5:00 a.m. Wednesday, August 20:

• Cactus Ave on-ramp to northbound I-15 closed
• Northbound I-15 off-ramp to Silverado Ranch Blvd closed

8:00 p.m. Wednesday, August 20 to 5:00 a.m. Thursday, August 21:

• Silverado Ranch Blvd on-ramp to northbound I-15 closed
• Northbound I-15 auxiliary lane from Silverado Ranch Blvd on-ramp and Blue Diamond Rd on and off-ramps closed

8:00 p.m. Thursday, August 21 to 5:00 a.m. Friday, August 22:

• Northbound I-15 reduced to one lane from Blue Diamond Rd to Warm Springs Rd
• Eastbound Blue Diamond Rd flyover ramp to northbound I-15 closed
• Blue Diamond Rd/I-215 slip ramp to northbound I-15 closed

Ongoing work:

24/7 through August 2025:

• Southbound I-15 reduced to three lanes from Warm Springs Rd to Blue Diamond Rd (auxiliary lane closed)

Motorists should use caution while traveling through work zones, and take alternate detour routes, if possible. NDOT works with Waze to inform the public about planned highway restrictions. The schedule is subject to change due to weather or other factors.

Additional state highway information is available at dot.nv.gov or by calling (775) 888-7000. For the latest state highway conditions, visit nvroads.com or call 511 before driving. Also follow @NevadaDOTVegas on X for traffic and project updates in southern Nevada, and @nevadadot on X, Facebook, and Instagram for updates from across the state.