Las Vegas Boulevard is a noteworthy, world-celebrated street in the Las Vegas Valley of Nevada, best known for the Las Vegas Strip segment of the street and its gambling clubs. Once in the past conveying U.S. Highway 91 (US 91), which had been the principal roadway between Los Angeles and Salt Lake City, it has been avoided by Interstate 15 and serves predominantly nearby activity with a few segments assigned State Route 604.
Las Vegas Boulevard has had a few names, including fifth Street (from Sahara to Owens, inside the Las Vegas city limits), Main Street (in North Las Vegas), the Arrowhead Highway, Los Angeles Highway, Salt Lake Highway, US 91 (whole fragment), US 93 (from Fremont Street north), US 466 (from Jean to Fremont Street, including the Las Vegas Strip) and State Route 6 (whole portion, unsigned).
South of the city, Las Vegas Boulevard was regularly known as the Los Angeles Highway. Only north of Jean is where they keep going spike on the San Pedro, Los Angeles and Salt Lake Railroad line was driven.
With the development of I-15, Las Vegas Boulevard went from being the primary through a street to one that lone filled in as a city road for local people and sightseers. Its present name, in actuality since 1959, mirrors its significance to the Valley as opposed to past names when it filled in as a primary intra-city street.
On October 16, 2009, the Federal Highway Administration declared the assignment of another National Scenic Byway on the road. The 3.5-mile (5.6 km) area beginning at Sahara Avenue and running north to Washington Avenue was assigned the City of Las Vegas, Las Vegas Boulevard State Scenic Byway.