highway in the Las Vegas Valley. The highway is the former route of U.S. Route 93 (US 93) and US 95 (and, historically, US 466) before they were moved to the current freeway alignment shared with Interstate 11 (I-11) and Interstate 515 (I-515). Known primarily as Boulder Highway, the route connects Downtown Las Vegas with Henderson and (now indirectly) Boulder City to the southeast. - Source: Wikipedia