State Route 591
Spring Mountain Road
Former SR 591 highlighted in red
Route information
Length	0.242 mi[1] (389 m)
Existed	1976–2008
Major junctions
West end	Aldebaran Avenue
Major intersections	I-15
East end	Highland Drive
Location
Country	United States
State	Nevada
Highway system
Nevada State Highway System Interstate US State Pre‑1976 Scenic
← SR 589 → SR 592

Spring Mountain Road is a major east-west road in the Las Vegas Valley. It runs from Hualapai Way at its western terminus to Las Vegas Boulevard in the east. East of Las Vegas Boulevard, Spring Mountain becomes Sands Avenue, and then jogs south to join Twain Avenue. State Route 591 (SR 591) was a state highway that comprised a 0.242-mile (0.389 km) section of Spring Mountain at Interstate 15.

The street is located in the unincorporated towns of Paradise (east of Decatur Boulevard) and Spring Valley (west of Decatur).^[2] It is the main thoroughfare of Las Vegas's Chinatown.

SR 591 began at the intersection of Spring Mountain Road and Aldebaran Avenue. From there, it proceeded east under Interstate 15 and terminated near Highland Drive. Highland Drive intersects Spring Mountain Road in the form of a ramp from southbound Highland to westbound Spring Mountain, underneath I-15.

As of January 2008, SR 591 had been decommissioned. Although not maintained as a state route, Nevada DOT still maintains the former highway as a frontage road (FR CL 51).^[1]

• Chinatown
• Desert Breeze Park
• Fashion Show Mall
• MSG Sphere Las Vegas
• The Palazzo
• Sands Expo
• Treasure Island Hotel and Casino
• Wynn Las Vegas

RTC Transit Routes 119 & 203 function on this road.