State Route 146 (SR 146) is a major east–west state highway in the southern part of the U.S. state of Nevada. It begins at an intersection with Southern Highlands Parkway, just west of the Exit 27 interchange on Interstate 15 (I-15). It ends at the Pecos Road (exit 6) interchange on I-215 in Henderson. The highway is known as Saint Rose Parkway, but it was known as Lake Mead Drive before 2001.
History
thumb|right|View from the west end of SR 146 looking eastbound as seen in 2015
The original segment of SR 146 was known as State Route 41 (Lake Mead Drive) until the early-1980s. Originally, it was a route that began at the current western terminus at Interstate 15 and crossed Boulder Highway in Henderson before ending at the intersection of North Shore Road near Lake Mead.
Construction of I-215 through southeast Las Vegas and Henderson altered the routing of SR 146. Clark County decided to build I-215 between Mile 6 (St. Rose Parkway/Pecos Road) and Mile 0 (the Interstate 515/U.S. Route 93/U.S. Route 95 interchange) on the SR 146 alignment. Since the Nevada Department of Transportation (NDOT) does not co-sign state routes along Interstate highways, the decision was made in 1999 to officially truncate SR 146 to its current eastern terminus.