State Route 159 (SR 159) is a east–west highway in Clark County, Nevada, United States, providing access to Red Rock Canyon and formerly serving as a thoroughfare in the Las Vegas Valley. A portion of the west end of the route is designated a Nevada Scenic Byway.
Route description
thumb|left|View from the western end of SR 159 looking eastbound as seen in 2015
SR 159 has two distinct segments. The first segment is a rural two-lane highway that begins at its junction with SR 160 (Pahrump Valley Highway, Blue Diamond Road) and Erskine Junction Way. From here, two things happen. First, the designation Blue Diamond Road continues onto SR 159. Second, the highway proceeds northwesterly through the town of Blue Diamond toward Spring Mountain Ranch State Park. The last signs for Blue Diamond Road can be found at an at-grade intersection with Castalia Street. After this intersection, SR 159 is officially known as Red Rock Canyon Road, near Frenchman Mountain.
History
upright=0.75|thumb|Looking west down the entire length of Charleston Boulevard, from the slopes of Frenchman Mountain as seen in 2005
A portion of Charleston Boulevard was previously designated US 95 Alternate to bypass Downtown Las Vegas. The designation began at Fremont Street (SR 582) and continued westward to Rancho Drive (SR 599), where it curved northward to reconnect to US 95. The alternate route was discontinued in 1982.
Approximately of SR 159 in Red Rock Canyon was designated a Nevada Scenic Byway on June 30, 1995.
Major intersections
Public transport
Current RTC Route 206 functions on this road.