| State: | NV |
| Type: | SR |
| Route: | 591 |
| Alternate Name: | Spring Mountain Road |
| Map Custom: | yes |
| Map Notes: | Former SR 591 highlighted in red |
| Maint: | none |
| Length Mi: | 0.242 |
| Length Ref: | [1] |
| Length Round: | 3 |
| Established: | 1976 |
| Decommissioned: | 2008 |
| Direction A: | West |
| Terminus A: | Aldebaran Avenue |
| Direction B: | East |
| Terminus B: | Highland Drive |
| Previous Type: | SR |
| Previous Route: | 589 |
| Next Type: | SR |
| Next Route: | 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 0.242miles 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]
RTC Transit Routes 119 & 203 function on this road.