State Route 23 is a state highway in the U.S. state of California that connects the Pacific coast and the Santa Monica Mountains to the Conejo and Santa Clara River valleys. It runs from Pacific Coast Highway in Malibu in Los Angeles County to Ventura Street in Fillmore in Ventura County.
State Route 84 is a state highway in the U.S. state of California that consists of two unconnected segments, one in the San Francisco Bay Area and the other primarily in the Sacramento–San Joaquin River Delta area.
The Avenue of the Giants is a scenic highway in northern California, United States, running through Humboldt Redwoods State Park. It is named for the coast redwoods that tower over the route. The road is a former alignment of U.S. Route 101, and continues to be maintained as a state highway as State Route 254.
State Route 116 (SR 116) is a state highway in the U.S. state of California in Sonoma County. The route runs from SR 1 on the Pacific coast near Jenner to SR 121 south of Sonoma.
U.S. Route 101 Business is a business loop of U.S. Route 101 that runs along Wildwood Avenue in Rio Dell in Humboldt County, California. Its southernmost section between US 101 near Scotia to the north end of the Eel River Bridge is legally defined as an unsigned state highway, State Route 283. The route was defined in 1970 as a transfer from a realigned US 101 after a freeway bypass was built.
State Route 12 is a state highway in the U.S. state of California that travels in an east–west direction from State Route 116 in Sebastopol in Sonoma County to State Route 49 just north of San Andreas in Calaveras County. The route connects the Sonoma and Napa valleys with the Sacramento–San Joaquin River Delta and the Sierra Foothills. It is constructed to freeway standards from the Fulton Road/South Wright Road stoplight in Santa Rosa, to its partial interchange with Farmers Lane.
State Route 20 is a state highway in the northern-central region of the U.S. state of California, running east–west north of Sacramento from the North Coast to the Sierra Nevada. Its west end is at SR 1 in Fort Bragg, from where it heads east past Clear Lake, Colusa, Yuba City, Marysville and Nevada City to I-80 near Emigrant Gap, where eastbound traffic can continue on other routes to Lake Tahoe or Nevada.
State Route 43 is a north–south state highway in the U.S. State of California, routed along the southern San Joaquin Valley between SR 119 southwest of Bakersfield and SR 99 in Selma. SR 43 runs roughly parallel to SR 99, connecting the towns of Shafter, Wasco, Corcoran, Hanford, and Selma.
State Route 184, locally known as Weedpatch Highway, is a state highway in the U.S. state of California. Located in Kern County, it runs from the intersection of SR 223 and Wheeler Ridge Road near Arvin north to SR 178 in Bakersfield. It is mainly a 2-lane conventional highway, expanding to four lanes in Lamont and Bakersfield. The highway serves local agricultural land south of Bakersfield.
State Route 104 is a west–east state highway in the U.S. state of California that runs from the Central Valley to the Sierra Foothills. It connects State Route 99 near Galt to State Route 49 in Sutter Creek via the city of Ione. It is known as Twin Cities Road from its western terminus up until just before Ione. West of the SR 104/SR 99 interchange, Twin Cities Road continues to Interstate 5 and then eventually end at State Route 160 north of Walnut Grove.
State Route 136 is a state highway in the U.S. state of California, running along the northern edge of Owens Lake in Inyo County from U.S. Route 395 in Lone Pine to State Route 190.
State Route 229 is a state highway in the U.S. state of California, running in San Luis Obispo County from State Route 58 to State Route 41. It connects the small community of Creston with the rural state routes. Also, in conjunction with SR 58 and SR 41, it provides a slower, more scenic route between the Central Coast and the San Joaquin Valley.
State Route 162 is a state highway in the U.S. state of California that runs roughly west–east through the Coast Ranges and the Sacramento Valley to the western slopes of the Sierra Nevada. It begins at U.S. Route 101 near Longvale, in Mendocino County, and ends at Brush Creek, in Butte County. For most of its length, it is a two lane, undivided highway. SR 162 is not signed as a contiguous route through Mendocino National Forest in Mendocino and Glenn counties. Instead, the portion inside the national forest is federally maintained by the U.S. Forest Service as Forest Highway 7 (FH 7), and is not included in the state route logs.
State Route 178 is a state highway in the U.S. state of California that exists in two constructed segments. The gap in between segments is connected by various local roads and State Route 190 through Death Valley National Park. The western segment runs from State Route 99 in Bakersfield and over the Walker Pass in the Sierra Nevada to the turnoff for the Trona Pinnacles National Natural Landmark. The eastern segment runs from the southeasterly part of Death Valley to Nevada State Route 372 at the Nevada state line.
U.S. Route 101 (US 101) is a major north–south United States Numbered Highway, stretching from Los Angeles, California, to Tumwater, Washington. The California portion of US 101 is one of the last remaining and longest U.S. Routes still active in the state, and the longest highway of any kind in California. US 101 was also one of the original national routes established in 1926. Significant portions of US 101 between the Los Angeles area and the San Francisco Bay Area follow El Camino Real, the commemorative route connecting the former Alta California's 21 missions.
State Route 253, also known as the Ukiah–Boonville Road, is a state highway in the U.S. state of California that runs between the Anderson and Ukiah valleys in Mendocino County. It crosses the mountains of the Mendocino Range from State Route 128 near Boonville to U.S. Route 101 near Ukiah.
State Route 197 is a state highway in the U.S. state of California located north of Crescent City in Del Norte County. Running along the north bank of the Smith River as North Bank Road, SR 197 is a bypass connecting U.S. Highways 199 and 101.
State Route 222, named Talmage Road along its entire length, is an unsigned state highway in the U.S. state of California. It was originally constructed as a short spur route of U.S. Route 101 in Mendocino County to what was the Mendocino State Hospital in Talmage. The road has remained a state highway after the hospital closed down and the City of Ten Thousand Buddhas monastery was established on the former site in 1976. The SR 222 designation legislatively ends at its intersection with East Side Road, where the road continues as Bodhi Way into the monastery complex.
State Route 223, locally known as Bear Mountain Boulevard, is a state highway in the U.S. state of California that runs west to east through the agricultural land south of Bakersfield in Kern County. Running from Interstate 5 (I-5) to State Route 58 near the city of Arvin, it also intersects with State Route 99 near Greenfield. SR 223 forms a truck route for transporting goods to the three main corridors in the area, I-5, SR 58 and SR 99, without having to drive through Bakersfield.
State Route 271 is a state highway in the U.S. state of California that runs along a former routing of U.S. Route 101 in Mendocino and Humboldt counties. It also connects with State Route 1 just before that route's terminus with US 101 in Leggett. After US 101 was realigned, SR 271 was reduced to being a frontage road in discontinuous segments. While US 101 stays mostly in second growth redwoods, SR 271 is used as a scenic alternate through several old growth redwood groves.
SR 1 near Albion 
I-505 in Winters 
