Sts. & Hy. Code, § 263.7

The state scenic highway system shall also include:

Route 138 from Route 2 near Wrightwood to Route 18 near Mt. Anderson.

Route 139 from Route 299 near Canby to the Oregon state line near Hatfield.

Route 140 from Route 49 at Mariposa to Yosemite National Park near El Portal.

Route 142 from the Orange-San Bernardino county line to Peyton Drive.

Route 146 from Pinnacles National Monument to Route 25 in Bear Valley.

Route 152 from:

(a) Route 1 to the Santa Clara county line at Hecker Pass.

(b) Route 156 near San Felipe to Route 5.

Route 160 from Route 4 near Antioch to Sacramento.

Route 163 from Ash Street in San Diego to Route 8.

Route 166 from Route 101 near Santa Maria to Route 33 in Cuyama Valley.

Route 168 from:

(a) Route 65 near Clovis to Huntington Lake.

(b) Camp Sabrina to Route 395.

(c) Route 395 at Big Pine to Route 266 at Oasis.

Route 174 from the Bear River to the Grass Valley city limits.

Route 178 from the east boundary of Death Valley National Monument to Route 127 near Shoshone.

Route 180 from:

(a) Route 65 near Minkler to General Grant Grove section of Kings Canyon National Park.

(b) General Grant Grove section of Kings Canyon National Park to Kings Canyon National Park boundary near Cedar Grove.

Route 190 from Route 65 near Porterville to Route 127 near Death Valley Junction.

Route 266 from the Nevada state line easterly of Oasis to Route 168 at Oasis.