This page looks at the highway system by routes and Caltrans districts. The following statistics are on this page:
|Modoc County: US 395, Route 299, and Route 139.||Yuba County: Route 20, Route 49, and Route 70|
|Del Norte County: US 101, Route 169, Route 197, and US 199.||Colusa County: I-5, Route 16, Route 20, and Route 45.|
|Glenn County: I-5, Route 32, Route 45, and Route 162.||Sierra County: Route 49, I-80, Route 89, and US 395.|
|Alpine County: Route 4, Route 88, Route 89, and Route 207.||Tuolumne County: Route 49, Route 108, Route 120, and Route 132.|
|1.||42 Routes: Los Angeles County||4.||19 Routes: Alameda County|
|2.||27 Routes: San Bernardino County||5.||18 Routes: Riverside County|
|3.||23 Routes: San Diego County||18 Routes: Orange County|
|1.||17 Routes: Los Angeles County||2.||8 Routes: Alameda County|
|17 Routes: San Diego County||3.||6 Routes: Mono County|
|2.||8 Routes: San Bernardino County||3.||6 Routes: Kern County|
|Lassen County||Modoc County||Trinity County|
|Colusa County||Glenn County||Yolo County|
|Sierra County||San Francisco City and County||San Benito County|
|Fresno County||Kings County||Merced County|
|Sutter County||Mariposa County||Calaveras County|
The following traverse the most counties, when both traversable and unconstructed milage is considered:
|1.|| I-5: 16
I-5 is the backbone of California, running from Mexico to the Oregon border. Counties traversed: San Diego, Orange, Los Angeles, Kern, Kings, San Benito, Merced, Sanislaus, San Joaquin, Sacramento, Yolo, Colusa, Glenn, Tehama, Shasta, and Siskiyou. #2 in total length.
|5.|| Route 99:
Route 99 is what is left of US 99, running from I-5 N of Los Angeles, through Bakersfield, Fresno, and Sacramento, to rejoin I-5 in northern California. Counties traversed: Kern, Tulare, Fresno, Madera, Mariposa, Stanislaus, San Joaquin, Sacramento, Sutter, and Butte. #5 in total length.
|2.|| US 101: 14 counties.
US 101 runs from downtown Los Angeles, through Ventura, Santa Barbara, San Luis Obispo, Monterey, San Jose, San Francisco, Marin, and Redwood Country. Counties traversed: Los Angeles, Ventura, Santa Barbara, San Luis Obispo, Monterey, San Benito, Santa Clara, San Mateo, San Francisco, Marin, Sonoma, Mendocino, Humboldt, Del Norte. #1 in total length.
| I-80: 10 counties.
I-80 runs to the Nevada border from San Francisco, through Sacramento. Counties traversed: San Francisco, Alameda, Contra Costa, Napa, Solano, Yolo, Sacramento, Placer, Nevada, and Sierra. Not in the top 10 for total length.
|3.|| Route 1: 12
Route 1 runs from southern Orange County to US 101 near Leggett, hugging the coast most of the way. Counties traversed: Orange, Los Angeles, Ventura, Santa Barbara, San Luis Obispo, Monterey, Santa Cruz, San Mateo, San Francisco, Marin, Sonoma, and Mendocino. #3 in total length.
| Route 49: 10
Route 49 runs from Route 41 near Oakhurst to Route 70 near Vinton through the Sierra gold country. Counties traversed: Madera, Mariposa, Tuolumne, Calaveras, Amador, El Dorado, Placer, Nevada, Yuba, Sierra, and Plumas. #8 in total length.
|4.|| Route 65: 11
Route 65 was a planned freeway E of Route 99 between Bakersfield and Route 99 near Yuba City. Counties traversed: Kern, Tulare, Fresno, Madera, Mariposa, Merced, Stanislaus, San Joaquin, Sacramento, Placer, and Sutter. #7 in total length.
|6.|| Route 33: 9
Route 33 runs from Ventura in various segments up to I-5 near Vernalis. Counties traversed: Ventura, Santa Barbara, San Luis Obispo, Kern, Kings, Fresno, Merced, Stanislaus, and San Joaquin.. #10 in total length.
|5.|| Route 89: 10
Route 89 runs from US 395 near Coleville to I-5 near Mt. Shasta. Counties traversed: Mono, Alpine, El Dorado, Placer, Nevada, Sierra, Plumas, Tehama, Shasta, and Siskiyou. Not in the top 10 for total length.
|7.|| US 395: 7 counties.
US 395 currently runs from north of San Bernardino to the Oregon border, with a break when it passes through Nevada. Counties traversed: San Bernardino, Kern, Inyo, Mono, Sierra, Lassen, and Modoc. #4 in total length.
||95 Highways: District 4
(Alameda, Contra Costa, Marin, Napa, Santa Clara, San Francisco, San Mateo, Solano, and Sonoma counties)
||67 Highways: District 3
(Butte, Colusa, El Dorado, Glenn, Nevada, Placer, Sacramento, Sierra, Yolo, and Yuba counties)
||62 Highways: District 10
(Alpine, Amador, Calaveras, Merced, Maraposa, San Joaquin, Stanislaus, Sutter, and Tuolumne counties)
||56 Highways: District 6
(Fresno, Kern, Kings, Madera, and Tulare counties)
||53 Highways: District 7
(Los Angeles and Ventura counties)
||18 Highways: District 12
||19 Highways: District 9
(Inyo and Mono counties)
||29 Highways: District 1
(Del Norte, Humboldt, Lake, Mendocino counties)
||31 Highways: District 11
(San Diego and Imperial counties)
||41 Highways: District 2
(Lassen, Modoc, Plumas, Shasta, Siskiyou, Tehama, and Trinity counties)
Statistics IV: Oh, The Traffic! Statistics Home: The Typical California Highway and Total Information
© 1996-2020 Daniel P.
Maintained by: Daniel P. Faigin <firstname.lastname@example.org>.