County routes in California
County routes in the U.S. state of California are controlled and maintained by the respective counties in which they are located. However, they are generally patrolled by the state's California Highway Patrol. They are typically major thoroughfares in rural areas, although many run through urban areas as well. Most are two-lane highways, and can accommodate high speeds and large volumes of traffic.
| County Routes in California | |
|---|---|
 Example of a California county route shield. | |
| System information | |
| Notes | All classes of state-numbered highways are generally state-maintained. |
| Highway names | |
| Interstates | Interstate X (I-X) or Route X |
| US Highways | U.S. Route X (US X) or Route X |
| State | State Route X (SR X) or Route X |
| System links | |
| County routes in California | |
County routes are typically designated with a letter (A, B, D, E, G, J, N, R, or S, depending on the region of the state, with several counties split between two region prefixes) followed by a number (example: G2). Therefore, the county routes are sorted alphabetically, from the northernmost region of California to the southernmost region. Routes with letters (A, B, D) are in the region of Northern California, letters (E, G, J) are in Central California, and (N, R, S) are in Southern California. Routes in Lake and San Bernardino Counties are designated by numbers only.
The level of signage varies by county. In San Diego County, reassurance markers are placed as frequently as they would be on state highways. In other counties, some county routes are completely unsigned. For most county routes, signage may be found at the beginning and end and at major junctions; reassurance markers are rare and are placed at distant intervals. With a handful of exceptions (one example being S2), county routes are typically referred to by their street name (e.g. Angeles Forest Highway or Kanan Dume Road) rather than their route designation.
These routes are all part of the California Route Marker Program, which was established in 1958. This program was incorporated into the National Uniform County Route Marker Program created by the National Association of Counties in 1967. Not all counties choose to use the same marker; some have different systems of numbering their county routes.
List
The county routes are alphabetically sorted by the prefix letter in its shield, followed by the corresponding number.
| Number | Length (mi)[1] | Length (km) | Southern or western terminus | Northern or eastern terminus | Counties | Formed | Removed | Notes |
|---|---|---|---|---|---|---|---|---|
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35.30 | 56.81 | SR 36 | SR 139 | Lassen | 1983 | current | |
 |
11.41 | 18.36 | SR 299 | SR 139 | Lassen | 1958 | current | |
 |
8.45 | 13.60 | Buntingville (US 395) | Standish (US 395) | Lassen | 1958 | current | |
 |
14.27 | 22.97 | Rosewood (SR 36) | Cottonwood (I-5) | Tehama | 1958 | current | |
 |
15.60 | 25.11 | Dales (Malton Road) | Forward Road | Tehama | 1958 | current | |
 |
4.96 | 7.98 | Red Bluff (Live Oak Road) | Red Bluff (SR 36) | Tehama | 1958 | current | |
 |
13.53 | 21.77 | Tehama (SR 99) | Red Bluff (SR 36) | Tehama | 1967 | current | |
 |
30.27 | 48.71 | Paskenta (Round Valley Road) | Corning (SR 99) | Tehama | 1967 | current | |
 |
15.19 | 24.45 | I-5 | Mount Shasta | Siskiyou | 1959 | current | |
 |
5.16 | 8.30 | Tehama (I-5) | Tehama (CR A8) | Tehama | 1967 | current | |
 |
17.90 | 28.81 | I-5 | US 97 | Siskiyou | 1959 | current | |
 |
3.79 | 6.10 | Hamilton Branch (SR 147) | Hamilton Branch (SR 36) | Plumas | 1959 | current | |
 |
5.69 | 9.16 | SR 89 | Johnsville | Plumas | 1959 | current | |
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8.35 | 13.44 | Portola (SR 89) | Portola (SR 36) | Plumas | 1959 | current | |
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38.74 | 62.35 | SR 36 | Redding (SR 273) | Shasta | 1960 | current | |
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19.19 | 30.88 | I-5 | SR 44 | Shasta, Tehama | 1963 | current | |
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8.83 | 14.21 | Redding (SR 273) | Shasta Dam | Shasta | 1960 | current | |
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17.40 | 28.00 | SR 299 | SR 89 | Shasta | 1960 | current | |
 |
5.56 | 8.95 | SR 89 | CR A19 | Shasta | 1960 | current | |
 |
22.60 | 36.37 | SR 147 | SR 44 | Lassen, Plumas | 1963 | current | This route was originally formed in 1933 as SR 183. |
 |
4.54 | 7.31 | SR 89 | Nelson Street | Plumas | 1961 | current | |
 |
12.81 | 20.62 | Sattley (SR 89) | Beckwourth (SR 70) | Plumas, Sierra | 1961 | current | |
 |
15.35 | 24.70 | Loyalton (SR 49) | SR 70 | Plumas, Sierra | 1961 | current | |
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4.20 | 6.76 | US 395 | Pole Line Road | Lassen | 1966 | current | |
 |
3.82 | 6.15 | US 395 | Herlong Access Road | Lassen | 1966 | current | |
 |
15.02 | 24.17 | Susanville (SR 36) | US 395 | Lassen | 1971 | current | |
 |
— | — | Grenada (CR A21) | Hornbrook (Copco Road) | Siskiyou | — | — | |
 |
— | — | Oroville (SR 70) | East of Oroville | Butte | 1964 | 1970 | Became part of SR 162[2] |
 |
7.50 | 12.07 | Oroville (SR 70) | SR 162 | Butte | 1964 | current | |
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5.48 | 8.82 | US 101 | SR 162 | Sonoma | 1975 | current | Unsigned route |
 |
2.62 | 4.22 | Crescent City (Pebble Beach Drive) | Crescent City (US 101) | Del Norte | 1966 | current | |
 |
5.82 | 9.37 | Crescent City (US 101) | Crescent City (Lake Earl Drive) | Del Norte | 1966 | current | |
 |
5.82 | 9.37 | Crescent City (US 101) | Crescent City (US 101) | Del Norte | 1966 | current | |
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3.43 | 5.52 | US 101 | US 101 | Del Norte | 1966 | current | |
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5.73 | 9.22 | US 101 | Near the Oregon state line (US 101) | Del Norte | 1966 | current | |
 |
0.31 | 0.50 | Indian Road | US 101 | Del Norte | 1966 | current | |
 |
0.90 | 1.45 | US 101 | Klamath River (Klamath Road) | Del Norte | 1966 | current | |
 |
3.98 | 6.41 | Klamath River | US 101 | Del Norte | 1966 | current | |
 |
3.91 | 6.29 | Grover Hot Springs State Park | Markleeville (SR 89) | Alpine | 1962 | current | |
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28.89 | 46.49 | Elk Grove (SR 99) | Roseville (I-80) | Placer, Sacramento | 1967 | current | |
 |
12.76 | 20.54 | Rancho Cordova (US 50) | Rocklin (I-80) | Placer, Sacramento | 1967 | current | |
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16.30 | 26.23 | Esparto (SR 16) | Dunnigan (I-5) | Yolo | 1968 | current | |
 |
4.03 | 6.49 | Jamestown (SR 49/SR 108) | Tuttletown (SR 49) | Tuolumne | 1974 | current | |
 |
15.93 | 25.64 | I-505/SR 128 | Davis (I-80) | Yolo | 1968 | current | |
 |
14.32 | 23.05 | I-80 | Woodland (SR 16) | Solano, Yolo | 1968 | current | |
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15.71 | 25.28 | Davis (CR E6) | SR 113 | Yolo | 1968 | current | |
 |
13.08 | 21.05 | SR 160 | SR 160 | Sacramento, Yolo | 1968 | current | |
 |
9.86 | 15.87 | I-505 | SR 113 | Yolo | 1968 | current | |
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5.19 | 8.35 | SR 113 | Tyndall Landing (SR 45) | Yolo | 1976 | current | |
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6.83 | 10.99 | Elk Grove (CR J8) | Elk Grove (CR E2) | Sacramento | 1971 | current | |
 |
14.79 | 23.80 | CR J11 | Galt (SR 99/SR 104) | Sacramento | 1971 | current | |
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17.62 | 28.36 | Sacramento (SR 99) | Orangevale (CR E3) | Sacramento | 1972 | current | |
 |
12.91 | 20.78 | Yosemite Junction (SR 120) | Copperopolis (SR 4) | Calaveras | 1974 | current | |
 |
33.21 | 53.45 | Plymouth (SR 49) | Fresh Pond (US 50) | Amador, El Dorado | 1967 | current | |
 |
13.39 | 21.55 | SR 108 | Soulsbyville (SR 108) | Tuolumne | 1974 | current | Unsigned route |
 |
12.78 | 20.57 | SR 49 | Columbia (SR 4) | Calaveras, Tuolumne | 1974 | current | |
 |
3.12 | 5.02 | SR 84 | Clarksburg (CR E9) | Yolo | 1976 | current | |
 |
19.93 | 32.07 | CR E21 | Log Cabin (SR 49) | Yuba | 1977 | current | |
 |
46.45 | 74.75 | Browns Valley (SR 20) | La Porte (Warren Hill Road) | Butte, Plumas, Yuba | 1977 | current | |
 |
5.42 | 8.72 | San Juan Bautista (SR 156) | Fremont Peak State Park | San Benito | 1958 | current | |
 |
— | — | Saratoga (SR 85) | Sunnyvale (SR 237) | Santa Clara | 1962 | current | Quito Road portion is unsigned |
 |
4.52 | 7.27 | Los Altos Hills (I-280) | Palo Alto (US 101) | Santa Clara | 1962 | current | |
 |
14.11 | 22.71 | Campbell (SR 17) | Milpitas (I-680) | Santa Clara | 1962 | current | Montague Expressway portion is unsigned; Montague Expressway portion was defined in 1978 |
 |
7.24 | 11.65 | Los Altos (I-280) | Palo Alto (CR G3) | Santa Clara | 1962 | current | |
 |
12.33 | 19.84 | Palo Alto (CR G3) | San Jose (US 101) | Santa Clara | 1962 | current | |
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3.25 | 5.23 | SR 25 | SR 152 | Santa Clara | 1962 | current | |
 |
29.38 | 47.28 | Gilroy (SR 152) | San Jose (SR 82) | Santa Clara | 1962 | current | |
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4.17 | 6.71 | Gilroy (US 101) | SR 152 | Santa Clara | 1963 | current | |
 |
10.34 | 16.64 | Los Gatos (SR 17) | San Jose (SR 82) | Santa Clara | 1964 | current | |
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8.96 | 14.42 | CR G12 | US 101/SR 156 | Monterey | 1965 | current | |
 |
10.54 | 16.96 | Prunedale (US 101/SR 156) | Watsonville (SR 129) | Monterey, Santa Cruz | 1965 | current | |
 |
— | — | — | — | Monterey, San Benito | 1965 | current | |
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— | — | — | — | Monterey, San Luis Obispo | 1971 | current | |
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— | — | — | — | Monterey | 1965 | current | |
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— | — | — | — | Monterey | 1965 | current | |
 |
— | — | — | — | Monterey | 1965 | current | |
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— | — | — | — | Monterey | 1971 | current | |
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— | — | — | — | Monterey, San Luis Obispo | 1971 | current | |
 |
— | — | — | — | Monterey | 1971 | current | |
 |
9.5 | 15.3 | CR G8 | I-680 | Santa Clara | 1978 | current | |
 |
— | — | SR 25 | SR 33/SR 180 | Fresno, San Benito | 1958 | current | |
 |
39.6 | 63.7 | SR 4 | Livermore (I-580) | Alameda, San Joaquin | 1960 | current | Route is part of De Anza National Historic Trail |
 |
35.3 | 56.8 | SR 132 | Lodi (SR 12) | San Joaquin, Stanislaus | 1960 | current | |
 |
27.9 | 44.9 | CR J3 | Discovery Bay (SR 4) | Alameda, Contra Costa, San Joaquin | 1960 | current | Route is part of De Anza National Historic Trail |
 |
30.8 | 49.6 | Ripon (SR 99) | CR J12 | San Joaquin | 1960 | current | |
 |
22.3 | 35.9 | SR 108 | SR 26 | San Joaquin, Stanislaus | 1960 | current | |
 |
65.2 | 104.9 | Merced (SR 59) | Stockton (SR 99) | Merced, San Joaquin, Stanislaus | 1960 | current | |
 |
43.7 | 70.3 | Stockton (SR 99) | Sacramento (SR 99) | Sacramento, San Joaquin | 1960 | current | |
 |
48.1 | 77.4 | CR J17 | Stockton (I-5) | San Joaquin, Stanislaus | 1960 | current | |
 |
17.6 | 28.3 | CR J8 | Galt (SR 99) | Sacramento, San Joaquin | 1960 | current | |
 |
— | — | CR E13 | CR J8 | Sacramento, San Joaquin | 1960 | current | |
 |
— | — | — | — | San Joaquin | 1960 | current | |
 |
— | — | — | — | San Joaquin | 1964 | current | Not shown in Caltran's database of routes in the County Signed Route program, so may be decommissioned |
 |
— | — | — | — | Calaveras, Stanislaus | 1974 | current | |
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— | — | — | — | Tulare | 1974 | current | |
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— | — | — | — | Mariposa, Merced, Stanislaus | 1960 | current | |
 |
— | — | I-5 | SR 59 | Merced, Stanislaus | 1960 | current | |
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— | — | I-5 | SR 99 | Merced, Stanislaus | 1960 | current | |
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— | — | — | — | Fresno, Tulare | 1964 | current | |
 |
— | — | Coulterville (SR 49) | SR 120 | Mariposa, Tuolumne | 1965 | — | Renumbered CR J132[3] |
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— | — | — | — | Tulare | 1968 | current | |
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— | — | — | — | Tulare | 1968 | current | |
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— | — | — | — | Tulare | 1974 | current | |
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— | — | — | — | Tulare | 1970 | current | |
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— | — | — | — | Tulare | 1971 | current | |
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— | — | — | — | Tulare | 1970 | current | |
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— | — | — | — | Tulare | 1975 | current | |
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— | — | — | — | Tulare | 1970 | current | |
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— | — | — | — | Tulare | 1971 | current | |
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— | — | — | — | Tulare | 1971 | current | |
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— | — | — | — | Tulare | 1975 | current | |
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— | — | — | — | Tulare | 1972 | current | |
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— | — | — | — | Tulare | 1975 | current | |
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— | — | — | — | Tulare | 1971 | current | |
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— | — | — | — | Tulare | 1975 | current | |
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— | — | — | — | Tulare | 1975 | current | |
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— | — | — | — | Tulare | 1975 | current | |
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— | — | — | — | Tulare | 1972 | current | |
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— | — | — | — | Fresno, Tulare | 1974 | current | |
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— | — | — | — | Inyo, Tulare | 1974 | current | |
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— | — | — | — | Tulare | 1972 | current | |
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— | — | — | — | Kern, Tulare | 1974 | current | |
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— | — | — | — | Tulare | 1974 | current | |
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— | — | — | — | Merced, Stanislaus, Tuolumne | 1961 | current | Tuolumne County segment established in 1974 |
 |
— | — | Coulterville (SR 49) | SR 120 | Mariposa, Tuolumne | — | — | Former CR J20[3] |
 |
8.50 | 13.68 | SR 1 | US 101 | Los Angeles | 1963 | current | |
 |
38.42 | 61.83 | SR 138 | SR 14/SR 138 | Los Angeles | 1963 | current | |
 |
25.00 | 40.23 | Sierra Highway | Angeles Crest Highway | Los Angeles | 1963 | current | |
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12.50 | 20.12 | SR 138 | SR 2 | Los Angeles | 1963 | current | |
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21.65 | 34.84 | — | — | Los Angeles | 1964 | current | |
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7.30 | 11.75 | SR 138 | Devil's Punchbowl | Los Angeles | 1964 | current | |
 |
7.09 | 11.41 | — | — | Los Angeles | 1964 | current | |
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16.76 | 26.97 | Buena Park (SR 39) | West Covina (I-10) | Los Angeles, Orange | 1970 | current | |
 |
12.54 | 20.18 | SR 1 | US 101 | Los Angeles | 1974 | current | |
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— | — | — | — | Riverside | 1964 | 1970 | Redesignated as SR 243[4] |
 |
11.26 | 18.12 | SR 177 | Eagle Mountain | Riverside | 1964 | current | |
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23.45 | 37.74 | SR 79 | Hemet (SR 74) | Riverside | 1966 | current | |
 |
34.08 | 54.85 | SR 94 | SR 79 | San Diego | 1959 | current | |
 |
65.00 | 104.61 | SR 98 | SR 79 | Imperial, San Diego | 1970 | current | |
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12.10 | 19.47 | SR 78 | CR S22 | San Diego | 1968 | current | |
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— | — | San Diego (I-15) | Poway (SR 67) | San Diego | 1959 | current | |
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— | — | Poway (CR S4) | San Diego (I-15) | San Diego | 1959 | current | |
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— | — | Del Mar (CR S21) | Palomar Observatory | San Diego | 1959 | current | |
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— | — | Pauma Valley (SR 76) | SR 76 near Lake Henshaw | San Diego | 1959 | current | |
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— | — | Solana Beach (CR S21) | Rancho Santa Fe (CR S6) | San Diego | 1959 | current | |
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— | — | Encinitas (CR S21) | Rancho Santa Fe (CR S6) | San Diego | 1959 | current | |
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— | — | Encinitas (CR S9) | San Marcos (CR S14) | San Diego | 1959 | current | |
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— | — | Encinitas (CR S9) | Oceanside (SR 78) | San Diego | 1959 | current | |
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— | — | Carlsbad (CR S21) | I-15 | San Diego | 1961 | current | |
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— | — | Vista (SR 78) | I-15 | San Diego | 1968 | current | Route is discontinuous between East Vista Way and South Mission Road |
 |
— | — | Oceanside (SR 76) | Escondido (Broadway) | San Diego | 1968 | current | |
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— | — | CR S13 | Old Highway 395 near I-15 | San Diego | 1959 | current | |
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— | — | Pala (SR 76) | Temecula (SR 79) | Riverside, San Diego | 1959 | current | |
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— | — | Chula Vista (I-5) | El Cajon | San Diego | 1964 | current | |
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29.05 | 46.75 | Laguna Beach (SR 133) | Orange (SR 55) | Orange | 1970 | current | |
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— | — | — | — | Orange | 1961 | current | |
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— | — | — | — | Santa Barbara | 1967 | 1988 | Deleted and replaced by rerouted SR 1 |
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24.74 | 39.82 | San Diego (I-5) | Camp Pendleton (I-5) | San Diego | 1968 | current | |
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— | — | CR S2 | SR 86 | Imperial, San Diego | — | — | |
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— | — | — | — | Imperial | 1970 | current | |
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— | — | — | — | Orange | — | — | |
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— | — | — | — | Imperial | — | — | |
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— | — | — | — | Imperial | — | — | |
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— | — | — | — | Imperial | — | — | |
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— | — | — | — | Imperial | — | — | |
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— | — | — | — | Imperial | — | — | |
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— | — | — | — | Imperial | — | — | |
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— | — | — | — | Imperial | — | — | |
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— | — | — | — | Imperial | — | — | |
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— | — | SR 78 | I-8 | Imperial | — | — | |
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— | — | — | — | Imperial | — | 1970 | Deleted and replaced by SR 78 |
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34.46 | 55.46 | CR S2 | SR 115 | Imperial | — | — | |
 |
175.7 | 282.8 | 1st Street in Oro Grande | US 95 northwest of Needles | San Bernardino | 2011[5] | current | This is the portion of the former U.S. Route 66 north of Victorville |
 |
— | — | — | — | Lake | — | — | |
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— | — | — | — | Lake | — | — | |
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— | — | — | — | Lake | — | — | |
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— | — | — | — | Lake | — | — | |
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— | — | — | — | San Diego | — | 1989 | never built |
| ||||||||
gollark: I see.
gollark: Although I haven't looked very hard.
gollark: The current consumer DNA test things seem to not be very privacy friendly.
gollark: You would probably know about *most* of the preexisting conditions.
gollark: Well, that sounds vaguely ominous.
See also
References
- "Numbered County Highways". California Highways. Retrieved May 26, 2008.
- "California Road Signs and Sights Gallery: Section of 1966 official highway map".
- "Go Coulterville, Town Tells Folks Yosemite-Bound". Modesto Bee. May 31, 1997.
J132, in Mariposa county, formerly was known as J20.
- "California Road Signs and Sights Gallery: Section of 1966 official highway map".
- Garrett Metzger, Nikki (August 6, 2012). "Supervisor Mitzlefelt Unveils Route 66 Marker in Front of the Famous Emma Jean Café". High Desert Daily. Retrieved May 18, 2015.
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