Cal. Streets and Highways Code § 263.4

The state scenic highway system shall also include: Route 37 from: (a) Route 251 near Nicasio to Route 101 near Novato. (b) Route 101 near Ignacio to Route 29 near Vallejo. Route 39 from Route 210 near Azusa to Route 2. Route 40 from Barstow to Needles. Route 41 from: (a) Route 1 near Morro Bay to Route 101 near Atascadero. (b) Route 46 near Cholame to Route 33. (c) Route 49 near Oakhurst to Yosemite National Park. Route 44 from Route 5 near Redding to Route 89 near Old Station. Route 46 from: (a) Route 1 near Cambria to Route 101 near Paso Robles. (b) Route 101 near Paso Robles to Route 41 near Cholame. Route 49 from: (a) Route 41 near Oakhurst to Route 120 near Moccasin. (b) Route 120 to Route 20 near Grass Valley. (c) Route 20 near Nevada City to Route 89 near Sattley. Route 50 from Route 49 near Placerville to the Nevada state line near Lake Tahoe. Route 57 from Route 90 to Route 60 near Industry. Route 58 from Route 14 near Mojave to Route 15 near Barstow. Route 68 from Monterey to Route 101 near Salinas. Route 70 from Route 149 near Wicks Corner to Route 89 near Blairsden. Route 71 from Route 91 near Corona to Route 83 north of Corona.