Two highways in the U.S. state of California have been signed as Route 40:
Interstate 40 in California, part of the Interstate Highway System
U.S. Route 40 in California (1928-1964)
![](http://up.wiki.x.io/wikipedia/commons/thumb/f/f6/California_40.svg/130px-California_40.svg.png)
Two highways in the U.S. state of California have been signed as Route 40: