State Route 164 (SR 164), also known as Nipton Road or the Joshua Tree Highway, is a state highway in southern Clark County, Nevada. The route, along with the unnumbered Nipton Road located in California, connects U.S. Route 95 (US 95) in Nevada to Interstate 15 in California just south of Primm, via the small town of Nipton, California. The majority of the highway is located within the Avi Kwa Ame National Monument.

The route begins at the California-Nevada state line about 3 miles (4.8 km) east of Nipton. The highway treks east from there, curving slightly northeast to pass by the McCullough Range. At the northern tip of the mountains surrounding Crescent Peak, the highway turns slightly more southeast and decreases in elevation as it heads towards Searchlight, Nevada. SR 164 reaches its eastern terminus at the junction with US 95 in the center of Searchlight; however, the roadway continues east as Cottonwood Cove Road, entering the Lake Mead National Recreation Area and ending near Cottonwood Cove.

In 2003, a sign near Searchlight designated the route as the Joshua Tree Highway, due to the abundance of Joshua trees located along the roadway.

The highway connecting Searchlight to Nipton first appears on maps as a county road in 1933. By 1940, the unimproved road was designated State Route 68. The road had been graded by 1950 and was finally paved by 1963.

In 1976, the Nevada Department of Transportation began a project to renumber the state highway system. During this process, the road was reassigned to State Route 164; this change was first seen on official state highway maps in 1978. The route has been largely unchanged since.

The entire route is in Clark County.

Location	mi	km	Destinations	Notes
​	0.00	0.00	Nipton Road – Nipton	Continuation beyond California state line
Searchlight	18.61	29.95	US 95 – Las Vegas, Laughlin, Needles
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

• United States portal
• U.S. Roads portal