Expected Development Impacts and Needs
Traffic Impacts and Urban Capacity
Traffic growth along I-15 associated with the currently planned projects, including the Southern Nevada Supplemental Airport (SNSA), the airport-compatible land use area, and Brightline West, is not expected to create significant concerns. Traffic projections for 2050 indicate only a modest increase in daily traffic, from approximately 47,500 vehicles per day in 2025 to 54,800 vehicles per day in 2050.
However, significant concerns arise from the potential development of approximately 31,000 acres between Jean and Sloan under the Clark County Lands Bill, which would expand development opportunities through Bureau of Land Management (BLM) land auctions. The resulting increase in traffic would require widening I-15 from Jean to Sloan by adding one lane in each direction, providing a total of four lanes in each direction.
Infrastructure Impacts and Corridor Needs
Future development will place additional demands on existing infrastructure, creating several needs throughout the corridor. These impacts include insufficient local arterial access, limited interchange access, and a lack of parallel and/or redundant routes. In addition, existing interchanges will need to be upgraded to meet current design standards.
I-15 is also a major freight corridor and will be affected as truck volumes continue to increase. Corridor needs will include additional truck parking to provide drivers with safe places to rest, as well as upgrades to weight station checkpoints to help ensure trucks traveling through Nevada are operating safely and comply with weight requirements.
