Interstate 15 in Nevada

Interstate 15 (I-15), designated the Las Vegas Freeway, is an Interstate Highway in the US state of Nevada that begins in Primm, continues through Las Vegas and it crosses the border with Arizona in Mesquite. Within the state, the freeway runs entirely in Clark County. The highway was built along the corridor of the older US Route 91 (US 91) and Arrowhead Trail, eventually replacing both of these roads.