Nevada State Route 431

State Route 431
Mount Rose Highway
SR 431 highlighted in red
Route information
Maintained by NDOT
Length	24.413 mi[1] (39.289 km)
Existed	1976–present
History	SR 27 by 1941, became SR 431 in 1976
Major junctions
West end	SR 28 in Incline Village
Major intersections	I-580 / US 395 in Reno
East end	US 395 Alt. / SR 341 in Reno
Location
Country	United States
State	Nevada
Counties	Washoe
Highway system
Nevada State Highway System Interstate US State Pre‑1976 Scenic
← SR 430 → SR 439

State Route 431 (SR 431), commonly known as the Mount Rose Highway, is a 24.413-mile-long (39.289 km) highway in Washoe County, Nevada, that connects Incline Village at Lake Tahoe with Reno. The highway, a Nevada Scenic Byway, takes its name from Mount Rose, which lies just off the highway. Prior to 1976, the highway existed as State Route 27.