List of state highways in California (pre-1964)

	Standard California state route shields, in the shape of a miner's spade to honor the California Gold Rush.
Highway names
Interstates	Interstate XX (I-XX)
US Highways	U.S. Route XX (US XX)
State	State Route XX (SR XX)
System links
	State highways in California; Interstate; US; State; Scenic; History; Pre‑1964; Unconstructed; Deleted; Freeways;

This is a list of state highways in the U.S. state of California that existed before the 1964 renumbering. It includes routes that were defined by the California State Legislature but never built, and is sorted by the unmarked legislative route number.^[3] For details on routes added before 1931, see history of California's state highway system#List of route numbers, 1917-1931; the dates given here are when the numbers were assigned (1916 for routes added in the first two bond issues, 1917 for routes added by the legislature before 1917).

^ "Economic Development History of State Route 99 in California". Federal Highway Administration. Retrieved July 16, 2012. In the 1960s, green and white CA-99 signs that resemble miners' spades replaced the black and white U.S. 99 shields
^ Papoulias, Alexander (January 4, 2008). "Car Sales Curbed Along El Camino". Palo Alto Weekly. Office of California State Senator Leland Yee. Archived from the original on October 19, 2012. Retrieved July 16, 2012. State routes can be identified by the green State Highway Route shield, which is in the shape of a spade in honor of the California Gold Rush, and bears the route's number
^ The information comes mainly from state laws.