News Summary
The I-15 South Widening Project in Las Vegas is underway, leading to lane and ramp restrictions for motorists. The Nevada Department of Transportation (NDOT) has announced ongoing paving work through August, causing potential delays. The project, costing approximately $86 million, aims to expand the southbound lanes and introduce new infrastructure. Motorists are advised to stay updated and consider alternative routes as travel plans may be affected by construction schedules and weather conditions.
Las Vegas I-15 South Widening Project Faces Lane Restrictions
The I-15 South Widening Project in Las Vegas is progressing, but motorists will experience lane and ramp restrictions as construction continues. The Nevada Department of Transportation (NDOT) announced that paving work is planned throughout August, and drivers are urged to exercise caution and consider alternative routes when traveling through the affected areas.
Drivers should be aware that the schedule for lane restrictions may adjust due to unforeseen circumstances, which can include weather conditions or construction delays. The ongoing work impacts multiple segments of Interstate 15, with reduced lanes and closed ramps expected during specific hours. NDOT recommends that motorists stay vigilant, adhere to posted signs, and utilize real-time updates provided through partnerships with navigation apps like Waze.
Project Overview and Timeline
Launched in January 2024, the I-15 South Widening Project is projected for completion by January 2026, at a cost of approximately $86 million. This initiative aims to expand the southbound lanes from six to eight lanes and in specific sections from six to eleven lanes. The project will also introduce sound walls and intelligent transportation system infrastructure to improve traffic management and reduce noise pollution.
Simultaneously, another related project—the I-15-Tropicana Interchange upgrade—is valued at $382 million and is nearing completion. Planned traffic updates are scheduled to be released by April as part of this interchange overhaul. Notably, the on-ramps to I-15 and the flyover ramp from I-15 southbound to Tropicana eastbound are expected to reopen in the same timeframe, with improvements also planned for the restructuring of Dean Martin and Joey Bishop drives aimed at enhancing north-south travel.
Current and Future Road Projects
In addition to these ongoing projects, the I-15 north widening, costing $71.5 million, is currently 90% complete, with only final paving and aesthetic enhancements remaining. Meanwhile, the widening work on Tropicana west of I-15 is set to continue into late 2025 as part of a broader effort to improve traffic flow in the region.
To support the ongoing expansions, NDOT is conducting an environmental study on the next stretch of I-15, extending from Flamingo Road to Sahara Avenue, which is projected to reach completion by 2028. This ongoing development reflects a significant investment in Las Vegas’s infrastructure as the city continues to grow.
Advisory for Motorists
As these improvements unfold, traffic patterns may shift, requiring drivers to adjust their travel plans. NDOT encourages the public to remain patient during this necessary construction period aimed at enhancing overall road safety and capacity in the area.
Deeper Dive: News & Info About This Topic
HERE Resources
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Lane Closures on I-15 as Tropicana Interchange Project Nears Completion
Additional Resources
- News 3 LV
- Las Vegas Review-Journal
- Fox 5 Vegas
- X1075 Las Vegas
- Encyclopedia Britannica: Interstate 15

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