Nevada State Route 146

State Route 146 is a major east - west route in Southern Nevada. It begins at the Exit 27 interchange on Interstate 15 south of the Las Vegas Strip and ends at the Pecos Road interchange on Interstate 215 in Henderson. The route is known as Saint Rose Parkway, but was known as Lake Mead Drive prior to 2001.HistoryThe original segment of SR 146 was known as State Route 41 until the early-1980s. Originally, it was a 19mi 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 and Mile 0 on the SR 146 alignment. Since the Nevada Department of Transportation 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. The portion of the highway east of I-515/US 93/US95 was recommissioned as State Route 564 . Clark County posted SR 146 signs along the 6mi overlapping section of I-215, even though the state highway designation no longer existed in this section when the freeway was completed in 2001—Many SR 146 signs still remained on I-215 in 2007, but have since been removed.