The highway was re-numbered State Route 233 as part of a mass renumbering of Nevada state routes. The 1978 edition of the official Nevada Department of Transportation state highway map was the first to show both numbers, with the 1982 edition the first to use only the 233 designation.
The highway was reassigned State Route 233 as part of a broad renumbering of Nevada's state routes. The 1978 edition of the official Nevada Department of Transportation map first displayed both numbers, with the 1982 edition being the first to use only the 233 designation.