I-15 North & I-15 NCD2

The I-15 North collector-distributor ramp system handles the complex lane-sorting between main I-15 lanes and the interchange network serving downtown Las Vegas and the north valley. The C-D ramps were designed to reduce weaving on main freeway lanes — but the ramps themselves create their own weave and merge conflicts. This location captures a specific freeway movement that is almost exclusively used by locals who know the system, yet is still generating a rising number of incidents.

After relative stability at 24 in 2022 and 21 in 2023, crashes jumped to 40 in 2024 — a 90% increase. Zero fatalities across all three years, but the 2024 surge, including 4 alcohol-involved incidents versus 1-2 in prior years, is concerning. This location moved from routine freeway ramp status to a pattern worth active investigation. Whether the 2024 increase reflects construction detours, changed traffic patterns, or another factor should be examined against NDOT activity records for this corridor.