Unconstructed state highways in California
Encyclopedia
The following state highway
State highway
State highway, state road or state route can refer to one of three related concepts, two of them related to a state or provincial government in a country that is divided into states or provinces :#A...

s in the U.S. state
U.S. state
A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...

 of California
California
California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

 are entirely or partially unconstructed; in other words, their routings have been defined by state law, but no route has been adopted by the California Department of Transportation
California Department of Transportation
The California Department of Transportation is a government department in the U.S. state of California. Its mission is to improve mobility across the state. It manages the state highway system and is actively involved with public transportation systems throughout the state...

 (Caltrans).

1–99

For former SR 11 in Los Angeles, California
Los Angeles, California
Los Angeles , with a population at the 2010 United States Census of 3,792,621, is the most populous city in California, USA and the second most populous in the United States, after New York City. It has an area of , and is located in Southern California...

 see California State Route 11 (1964-1981).

State Route 11 is a proposed 3-mile (4.8 km) tolled route to a future Mexican border crossing east of Otay Mesa. It would run southeast from near the junction of SR 905
California State Route 905
State Route 905 is a state highway in San Diego, California that connects Interstate 5 and Interstate 805 in San Ysidro to the United States – Mexico border at Otay Mesa. The portions of the route from I-5 to I-805 and from Britannia Boulevard to the International border are freeway...

 and SR 125
California State Route 125
State Route 125 is a state highway in the U.S. state of California that currently runs from State Route 905 in Otay Mesa near the U.S.–Mexico border to State Route 52 in Santee....

 to the crossing.
The westernmost 9.2 miles (14.8 km) of State Route 12 are unconstructed, from SR 116
California State Route 116
State Route 116 is a state highway in the U.S. state of California in Sonoma County. The route runs from State Route 1 on the Pacific coast near Jenner to State Route 121 south of Sonoma.-Route description:...

 in Sebastopol
Sebastopol, California
Sebastopol is a city in Sonoma County, California, United States, approximately north of San Francisco. The population was 7,379 at the 2010 census, but its businesses also serve surrounding rural portions of Sonoma County, totaling about 50,000 people...

 west to SR 1
California State Route 1
State Route 1 , more often called Highway 1, is a state highway that runs along much of the Pacific coast of the U.S. state of California. It is famous for running along some of the most beautiful coastlines in the world, leading to its designation as an All-American Road.Highway 1 does not run...

.

The south end of State Route 13 is unconstructed, extending 4.5 miles (7.2 km) beyond I-580
Interstate 580 (California)
Interstate 580 is an 80-mile east–west Interstate Highway in Northern California. The heavily traveled spur route of Interstate 80 runs from San Rafael in the San Francisco Bay Area to Interstate 5 near Tracy in the Central Valley...

 to SR 61
California State Route 61
State Route 61 is a California, United States, highway which runs through Alameda and along the Oakland International Airport. The western terminus is with State Route 260 at Webster Street in Alameda, and it runs along east Central Avenue and Encinal Avenue until reaching Broadway...

 near the Oakland International Airport
Oakland International Airport
Oakland International Airport , also known as Metropolitan Oakland International Airport, is a public airport located south of the central business district of Oakland, a city in Alameda County, California, United States...

. A very short piece at the north end has also not been built, extending west into the San Francisco Bay
San Francisco Bay
San Francisco Bay is a shallow, productive estuary through which water draining from approximately forty percent of California, flowing in the Sacramento and San Joaquin rivers from the Sierra Nevada mountains, enters the Pacific Ocean...

 to the unconstructed SR 61 freeway.

A 21.8-mile (35.1 km) extension of State Route 14
California State Route 14
State Route 14 is a north–south state highway in the U.S. state of California, largely in the Mojave Desert. The southern portion of the highway is signed as the Antelope Valley Freeway. The route connects Interstate 5, or Golden State Freeway, near Santa Clarita and with U.S. Route 395 near...

from the Newhall Pass interchange
Newhall Pass interchange
The Newhall Pass Interchange is a highway interchange at Newhall Pass, north of Sylmar in Southern California, United States. It connects Interstate 5 with State Route 14 , and includes truck bypass roadways...

 with I-5
Interstate 5 in California
Interstate 5 is a major north–south route of the Interstate Highway System in the U.S. state of California. It begins at the Mexico – United States border at the San Ysidro crossing, goes north across the length of California and crosses into Oregon south of the Medford-Ashland metropolitan...

 south to SR 1
California State Route 1
State Route 1 , more often called Highway 1, is a state highway that runs along much of the Pacific coast of the U.S. state of California. It is famous for running along some of the most beautiful coastlines in the world, leading to its designation as an All-American Road.Highway 1 does not run...

 northwest of Santa Monica
Santa Monica, California
Santa Monica is a beachfront city in western Los Angeles County, California, US. Situated on Santa Monica Bay, it is surrounded on three sides by the city of Los Angeles — Pacific Palisades on the northwest, Brentwood on the north, West Los Angeles on the northeast, Mar Vista on the east, and...

 was once proposed as the Reseda Freeway. The post miles on the existing alignment reflect the existence of this unconstructed segment, but the new exit numbers on State Route 14
California State Route 14
State Route 14 is a north–south state highway in the U.S. state of California, largely in the Mojave Desert. The southern portion of the highway is signed as the Antelope Valley Freeway. The route connects Interstate 5, or Golden State Freeway, near Santa Clarita and with U.S. Route 395 near...

 suggest this segment has been abandoned.

State Route 18 is unconstructed from its end at SR 210 in San Bernardino
San Bernardino, California
San Bernardino is a city located in the Riverside-San Bernardino metropolitan area , and serves as the county seat of San Bernardino County, California, United States...

 south to I-10
Interstate 10 in California
Interstate 10 , the major east–west Interstate Highway in the Southern United States, runs in the U.S. state of California east from Santa Monica, on the Pacific Ocean, through Los Angeles and San Bernardino to the border with Arizona...

, a distance of 4.1 miles (6.6 km).

A 15.1-mile (24.3 km) eastern extension of State Route 24
California State Route 24
State Route 24 in the U.S. state of California is a heavily-traveled east–west freeway in the eastern side of the San Francisco Bay Area of northern California that runs from the Interstate 580/Interstate 980 interchange in Oakland to the Interstate 680 junction in Walnut Creek...

from I-680
Interstate 680 (California)
Interstate 680 is a north–south Interstate Highway in Northern California. It curves around the eastern cities of the San Francisco Bay Area from San Jose to Interstate 80 at Cordelia, bypassing cities along the eastern shore of San Francisco Bay such as Oakland and Richmond while serving...

 at Walnut Creek
Walnut Creek, California
Walnut Creek is an incorporated city located east of the city of Oakland. It lies in the East Bay region of the San Francisco Bay Area. While not as large as neighboring Concord, Walnut Creek serves as the business and entertainment hub for the neighboring cities within central Contra Costa...

 to SR 4 near Pittsburg
Pittsburg, California
Pittsburg is a city located in eastern Contra Costa County, California, the outer portion of the East Bay region of the San Francisco Bay Area. The population was 63,264 at the 2010 census....

 is unconstructed.

The eastern segment of State Route 36
California State Route 36
State Route 36 is an east–west state highway in the U.S. state of California that is routed from U.S. Route 101 in Humboldt County to U.S. Route 395 just east of Susanville in Lassen County. The portion of SR 36 travelling past Lassen Volcanic National Park and Lake Almanor is part of the...

, stretching 17.0 miles (27.4 km) from SR 139
California State Route 139
State Route 139 is a state highway in the U.S. state of California. Running from Susanville north to Oregon Route 39, it forms part of the shortest route between Reno, Nevada and Klamath Falls, Oregon. The entire route is part of the California Freeway and Expressway System, but is a two-lane road...

 north of Susanville
Susanville, California
Susanville is the county seat of Lassen County, California, United States. Susanville is located on the Susan River in the south-central part of the county, at an elevation of 4186 feet . The population was 17,974 at the 2010 census, up from 13,541 at the 2000 census...

 east to US 395
U.S. Route 395 in California
In the U.S. state of California, U.S. Route 395 is a route which traverses from Interstate 15 near the southern city limits of Hesperia, north to the Oregon state line in Modoc County near Goose Lake...

 near Termo
Termo, California
Termo is an unincorporated community in Lassen County, California. It is located on the Southern Pacific Railroad north-northeast of Susanville, at an elevation of 5305 feet . This town straddles U.S. Highway 395 north of Ravendale.In 1909, Termo was the terminus of the Nevada–California–Oregon...

, was unconstructed until it was deleted from the legislative definition in 1998.

An unconstructed 11.2-mile (18.0 km) western extension of State Route 37
California State Route 37
State Route 37 is a state highway in the northern part of the U.S. state of California that runs 21 miles along the northern shore of San Pablo Bay. It is built from U.S. Route 101 in Novato and runs through the southern tips of Sonoma and Napa Counties to Interstate 80 in Vallejo...

runs from US 101 near Novato
Novato, California
Novato is a city located in the North Bay region of the San Francisco Bay Area, in northern Marin County. Novato is located about north-northwest of San Rafael, at an elevation of 30 feet above sea level . The 2010 U.S. Census estimated the city population to be about 51,904. Novato is about ...

 to SR 1 near Nicasio
Nicasio, California
Nicasio is a census-designated place in Marin County, California. It is located west-southwest of Novato, at an elevation of 194 feet . The population was 96 at the 2010 census....

.

11.4 miles (18.3 km) of State Route 39
California State Route 39
State Route 39 is a state highway in the U.S. state of California that travels through Orange and Los Angeles counties. Its southern terminus is at Pacific Coast Highway , in Huntington Beach, and its northern terminus is at Islip Saddle on Angeles Crest Highway in the Angeles National...

are unconstructed, from La Habra
La Habra, California
La Habra is a city in the northwestern corner of Orange County, California. In the 2010 census, the city had a population of 60,239. Its related city, La Habra Heights is located to the north of La Habra, and is in Los Angeles County.-Origin of name:...

 north to I-10
Interstate 10 in California
Interstate 10 , the major east–west Interstate Highway in the Southern United States, runs in the U.S. state of California east from Santa Monica, on the Pacific Ocean, through Los Angeles and San Bernardino to the border with Arizona...

 in Azusa
Azusa, California
Azusa is a city in Los Angeles County, California, United States. The population was 46,361 at the 2010 census, up from 44,712 at the 2000 census. Though sometimes assumed to be a compaction of the phrase "everything from A to Z in the USA" from an old Jack Benny joke, the place name "Azusa"...

. However, Section 339(c) of the California Streets and Highways Code designates Harbor Boulevard and Azusa Avenue to be on the corridor between the two existing segments. As yet, the California Transportation Commission, as empowered in Section 75(a) of the California Streets and Highways Code, has not adopted the Harbor Boulevard-Azusa Avenue link. It is noted that an END Route 39 sign exists at the intersection of Whittier Boulevard and Fullerton Road. In addition, the northernmost 4.5 miles of Route 39, in the Angeles National Forest between 1.8 miles north of Crystal Lake Road and Route 2 at Islip Saddle, have been closed since a 1978 landslide.

State Route 47
California State Route 47
State Route 47 is a state highway in the U.S. state of California, connecting Terminal Island to the mainland in the Los Angeles area. From its south end at I-110 in San Pedro, it heads east across the Vincent Thomas Bridge to the island and the end of state maintenance...

is constructed as freeway from I-110 in San Pedro east to the east end of the Vincent Thomas Bridge
Vincent Thomas Bridge
The Vincent Thomas Bridge is a long suspension bridge, opened in 1963, crossing the Los Angeles Harbor in the U.S. state of California, linking San Pedro, Los Angeles, with Terminal Island. The bridge is signed as part of State Route 47. It is named for California Assemblyman Vincent Thomas of San...

 and from I-710 north to the split with SR 103
California State Route 103
State Route 103, part of the Terminal Island Freeway, is a short state highway in Los Angeles and Long Beach. It runs from a split with State Route 47 northeast to a cloverleaf interchange with State Route 1. Beyond SR 1, the freeway is owned by the city of Long Beach to its end at Willow Street...

. The 1.2-mile (1.9 km) segment along Ocean Boulevard is currently being upgraded, and the 7.6-mile (12.2 km) portion along Henry Ford Avenue and Alameda Street north to SR 91
California State Route 91
State Route 91 is a major east–west freeway located entirely within Southern California and serving several regions of the Greater Los Angeles metropolitan area...

 has been upgraded as part of the Alameda Corridor Project, existing as a mostly below-grade surface street. Caltrans has no plans for the remainder of the legislated route, stretching 8.6 miles (13.8 km) north from SR 91 to I-10
Interstate 10 in California
Interstate 10 , the major east–west Interstate Highway in the Southern United States, runs in the U.S. state of California east from Santa Monica, on the Pacific Ocean, through Los Angeles and San Bernardino to the border with Arizona...

 near downtown Los Angeles
Los Angeles, California
Los Angeles , with a population at the 2010 United States Census of 3,792,621, is the most populous city in California, USA and the second most populous in the United States, after New York City. It has an area of , and is located in Southern California...

.
State Route 48 is completely unconstructed, stretching 8.5 miles (13.7 km) from the northern junction of SR 14
California State Route 14
State Route 14 is a north–south state highway in the U.S. state of California, largely in the Mojave Desert. The southern portion of the highway is signed as the Antelope Valley Freeway. The route connects Interstate 5, or Golden State Freeway, near Santa Clarita and with U.S. Route 395 near...

 and SR 138
California State Route 138
State Route 138 is an east–west state highway generally following the northern foothills of the San Gabriel Mountains of southern California, USA from its junction with Interstate 5 south of Gorman eastward to Mount Anderson Junction, its eastern junction with State Route 18 south of...

 near Lancaster
Lancaster, California
Lancaster is a charter city in northern Los Angeles County, in the high desert, near the Kern County line. Lancaster currently ranks as the 30th largest city in California, and the 148th largest city in the United States. Lancaster is the principal city within the Antelope Valley...

 east to proposed SR 122.

SR 48 was originally planned to run from Ridge Route Road (approximately four miles east of Interstate 5
Interstate 5 in California
Interstate 5 is a major north–south route of the Interstate Highway System in the U.S. state of California. It begins at the Mexico – United States border at the San Ysidro crossing, goes north across the length of California and crosses into Oregon south of the Medford-Ashland metropolitan...

) near Quail Lake in Los Angeles County to SR 122 near the Los Angeles / San Bernardino County Line. The segment between Ridge Route Road and SR 14 was signed as SR 138, which was defined on a southeastely course through or paralleling Oakdale and Pine Canyons to meet SR 14 in Palmdale opposite the easterly continuation of Route 138. The planned rerouting was known as the Metropolitan Bypass Freeway. In the mid 1960s, because of constructability issues on the proposed realignment of Route 138 through or near Oakdale and Pine Canyons, the proposed junction, and thus the west end of SR 48, was moved east to 170th Street West. In 1995, the segment of SR 48 between 170th Street West and SR 14 was transferred to SR 138, leaving only the unconstructed portion.
State Route 54
California State Route 54
State Route 54 is a California State Highway in San Diego that connects Interstate 5 to the city of El Cajon. The first section was built circa 1961, and the final section of freeway opened in 2007....

is unconstructed from SR 125
California State Route 125
State Route 125 is a state highway in the U.S. state of California that currently runs from State Route 905 in Otay Mesa near the U.S.–Mexico border to State Route 52 in Santee....

 and SR 94
California State Route 94
State Route 94 in the U.S. state of California is the Martin Luther King Jr. Freeway from Interstate 5 in Downtown San Diego to the end of the freeway portion past Route 125 in Spring Valley; the non-freeway segment of SR 94 is Campo Road....

 near Spring Valley.

State Route 56
California State Route 56
State Route 56 runs from Interstate 5 in the Carmel Valley neighborhood of San Diego to Interstate 15. Route 56 was originally planned in 1964 to connect to the north end of State Route 125 and continue east to State Route 67, but the city of Poway worked to make sure that would not be possible...

is unconstructed from I-15
Interstate 15 in California
In the U.S. state of California, Interstate 15 is a major north–south route through the San Bernardino, Riverside, and San Diego Counties, and it has a length of in the state. It is a major thoroughfare for traffic between Southern California and Las Vegas, Nevada, as well as points beyond...

 east through Poway
Poway, California
Poway is a city in San Diego County, California. Originally an unincorporated community in San Diego County, Poway officially became a city in December 1980. Even though Poway lies geographically in the middle of San Diego County, most consider its relative location as north county inland...

 to SR 67
California State Route 67
State Route 67 runs from Interstate 8 in El Cajon to Lakeside as the San Vicente Freeway. It then becomes a smaller roadway through Poway and becomes Main Street in Ramona before ending into State Route 78....

.

A southerly extension of State Route 57
California State Route 57
State Route 57 , also known as the Orange Freeway, is a north–south state highway in the Greater Los Angeles Area of the U.S. state of California. It connects the interchange of Interstate 5 and State Route 22 near downtown Orange, locally known as the Orange Crush, with the Glendora Curve...

, stretching 13.0 miles (20.9 km) from SR 22
California State Route 22
State Route 22 in the U.S. state of California is an east–west highway in southern Los Angeles County and northern Orange County. It runs between Long Beach and Orange by way of Garden Grove. The westernmost part of it is a surface street, Long Beach's 7th Street. From Long Beach to its...

 near Santa Ana
Santa Ana, California
Santa Ana is the county seat and second most populous city in Orange County, California, and with a population of 324,528 at the 2010 census, Santa Ana is the 57th-most populous city in the United States....

 south to SR 1
California State Route 1
State Route 1 , more often called Highway 1, is a state highway that runs along much of the Pacific coast of the U.S. state of California. It is famous for running along some of the most beautiful coastlines in the world, leading to its designation as an All-American Road.Highway 1 does not run...

 near Huntington Beach
Huntington Beach, California
Huntington Beach is a seaside city in Orange County in Southern California. According to the 2010 census, the city population was 189,992; making it the largest beach city in Orange County in terms of population...

, is unconstructed.

A total of 24.3 miles (39.1 km) of State Route 61
California State Route 61
State Route 61 is a California, United States, highway which runs through Alameda and along the Oakland International Airport. The western terminus is with State Route 260 at Webster Street in Alameda, and it runs along east Central Avenue and Encinal Avenue until reaching Broadway...

are unconstructed, running south from SR 112 near San Leandro
San Leandro, California
San Leandro is a city in Alameda County, California, United States. It is considered a suburb of Oakland and San Francisco. The population was 84,950 as of 2010 census. The climate of the city is mild throughout the year.-Geography and water resources:...

 to SR 84
California State Route 84
State Route 84 is a split-section California State Highway consisting of two sections. The first section is an east–west arterial road running from San Gregorio to Menlo Park, across the Dumbarton Bridge through Fremont and Newark and ending at I-580 in Livermore. The route overlaps the...

 near Newark
Newark, California
Newark is a city in Alameda County, California, United States. It was incorporated as a city in September 1955. Newark is an enclave, completely surrounded by the city of Fremont. Its population was 42,573 at the 2010 census.-Geography:...

 and north from SR 260 in Alameda
Alameda, California
Alameda is a city in Alameda County, California, United States. It is located on Alameda Island and Bay Farm Island, and is adjacent to Oakland in the San Francisco Bay. The Bay Farm Island portion of the city is adjacent to the Oakland International Airport. At the 2010 census, the city had a...

 to I-580 near Albany
Albany, California
Albany is a city in Alameda County, California, United States. The population was 18,539 at the 2010 census.-History:In 1908, a group of local women protested the dumping of Berkeley garbage in their community...

.

State Route 64 is an unconstructed 30-mile (48.3 km) freeway connecting SR 1
California State Route 1
State Route 1 , more often called Highway 1, is a state highway that runs along much of the Pacific coast of the U.S. state of California. It is famous for running along some of the most beautiful coastlines in the world, leading to its designation as an All-American Road.Highway 1 does not run...

 near Malibu Beach with I-5
Interstate 5 in California
Interstate 5 is a major north–south route of the Interstate Highway System in the U.S. state of California. It begins at the Mexico – United States border at the San Ysidro crossing, goes north across the length of California and crosses into Oregon south of the Medford-Ashland metropolitan...

 at SR 170 south of San Fernando
San Fernando, California
San Fernando is a city located in the San Fernando Valley, in northwestern region of Los Angeles, California, United States. The population was 23,645 at the 2010 census, up from 23,564 at the 2000 census.-History:...

. It was legislated in 1959 as Route 265, and renumbered Route 64 in 1964.
Over two-thirds of State Route 65
California State Route 65
State Route 65 , commonly known as Highway 65, is a north–south state highway in the U.S. state of California composed of two segments connecting Bakersfield to Exeter and Roseville to Olivehurst...

is a proposed route through the eastern San Joaquin Valley
San Joaquin Valley
The San Joaquin Valley is the area of the Central Valley of California that lies south of the Sacramento – San Joaquin River Delta in Stockton...

, splitting the maintained route in two. This unconstructed highway stretches 215.9 miles (347.5 km) from SR 198
California State Route 198
State Route 198 is an east–west state highway that connects the California Central Coast to the mid-Central Valley at Visalia, although the most-traveled portion is in the Central Valley itself....

 near Exeter
Exeter, California
Exeter is a city in Tulare County, California, United States. It is situated near the foothills of the Sierra Nevada Mountain Range. The population was 10,334 at the 2010 census....

 to I-80
Interstate 80 in California
In the U.S. state of California, Interstate 80 , a major east–west route of the Interstate Highway System, has its western terminus in San Francisco, California, United States. From there it heads east across the Bay Bridge to Oakland, where it turns north and crosses the Carquinez Bridge...

 near Roseville
Roseville, California
-2010:The 2010 United States Census reported that Roseville had a population of 118,788. The population density was 3,279.4 people per square mile...

.

The eastern end of State Route 74
California State Route 74
State Route 74 , a part of the Pines to Palms Scenic Byway, is a mostly scenic highway in the U.S. state of California. It runs from Palm Desert in Riverside County westward to San Juan Capistrano in Orange County.-Route description:...

is unconstructed, from SR 111
California State Route 111
State Route 111 is a state highway in the U.S. state of California. It is the main north/south state highway and retail corridor through the Coachella Valley, a part of the Colorado Desert in the southeastern corner of the state and famous as a resort destination...

 in Palm Desert
Palm Desert, California
Palm Desert is a city in Riverside County, California, United States, in the Coachella Valley, approximately east of Palm Springs. The population was 48,445 at the 2010 census, up from 41,155 at the 2000 census...

 north 5.5 miles (8.9 km) to I-10
Interstate 10 in California
Interstate 10 , the major east–west Interstate Highway in the Southern United States, runs in the U.S. state of California east from Santa Monica, on the Pacific Ocean, through Los Angeles and San Bernardino to the border with Arizona...

, although Monterey Ave provides a route between the highway terminus and Interstate 10.

State Route 77 presently stretches only 0.4 miles (0.6 km) from I-880 northeast to SR 185
California State Route 185
State Route 185 is a state highway in the San Francisco Bay Area of the U.S. state of California. It runs along sections of Mission Boulevard in Hayward, East 14th Street in San Leandro and International Boulevard in Oakland.-Route description:...

 in Oakland
Oakland, California
Oakland is a major West Coast port city on San Francisco Bay in the U.S. state of California. It is the eighth-largest city in the state with a 2010 population of 390,724...

. A 13.4-mile (21.6 km) extension is unconstructed, running generally northeast to SR 24
California State Route 24
State Route 24 in the U.S. state of California is a heavily-traveled east–west freeway in the eastern side of the San Francisco Bay Area of northern California that runs from the Interstate 580/Interstate 980 interchange in Oakland to the Interstate 680 junction in Walnut Creek...

 near Lafayette
Lafayette, California
Lafayette is a city in Contra Costa County, California, United States. As of the 2010 census, the city's population was 23,893. It was named after the Marquis de Lafayette, a French military hero of the American Revolutionary War...

.

State Route 81 is an entirely-unconstructed 30.9-mile (49.7 km) freeway from I-215 southeast of Riverside
Riverside, California
Riverside is a city in Riverside County, California, United States, and the county seat of the eponymous county. Named for its location beside the Santa Ana River, it is the largest city in the Riverside-San Bernardino-Ontario metropolitan area of Southern California, 4th largest inland California...

 west and north around the south and west sides of Riverside to I-15
Interstate 15 in California
In the U.S. state of California, Interstate 15 is a major north–south route through the San Bernardino, Riverside, and San Diego Counties, and it has a length of in the state. It is a major thoroughfare for traffic between Southern California and Las Vegas, Nevada, as well as points beyond...

 south of Devore
Devore, California
Devore is a neighborhood in the city of San Bernardino, California. It is located near the northern junction of Interstate 15 and Interstate 215. The area is just outside the boundaries of the San Bernardino National Forest; nearby cities/town centers include Universitytown, Fontana, and Rialto...

. It was defined in 1959 as Legislative Route 276 and renumbered to Route 81 in 1964.
A 13-mile (21 km) piece in the middle of State Route 84
California State Route 84
State Route 84 is a split-section California State Highway consisting of two sections. The first section is an east–west arterial road running from San Gregorio to Menlo Park, across the Dumbarton Bridge through Fremont and Newark and ending at I-580 in Livermore. The route overlaps the...

is unconstructed, stretching north from I-580 in Livermore
Livermore, California
Livermore is a city in Alameda County. The population as of 2010 was 80,968. Livermore is located on the eastern edge of California's San Francisco Bay Area....

 to SR 4 near Brentwood
Brentwood, California
Brentwood is a city in Contra Costa County, California, United States. It is located in the East Bay region of the San Francisco Bay Area. The population is 51,481 as of 2010....

.

An unconstructed northern extension of State Route 87
California State Route 87
State Route 87 , locally called Highway 87 or the Guadalupe Freeway, is a north–south state highway entirely within San Jose, California, United States. Its name was changed from Guadalupe Parkway in 2004 after its entire constructed length was upgraded to a freeway...

runs from the present end at US 101 to SR 237
California State Route 237
State Route 237 runs from El Camino Real in Mountain View to Interstate 680 in Milpitas. It runs south of the San Francisco Bay, connecting the East Bay to the Peninsula.This route is part of the California Freeway and Expressway System....

 near Alviso.

The central portion of State Route 90
California State Route 90
State Route 90 is a state highway in Southern California, United States. It consists of two unconnected pieces in Greater Los Angeles....

is unconstructed, stretching from I-405 east to SR 39
California State Route 39
State Route 39 is a state highway in the U.S. state of California that travels through Orange and Los Angeles counties. Its southern terminus is at Pacific Coast Highway , in Huntington Beach, and its northern terminus is at Islip Saddle on Angeles Crest Highway in the Angeles National...

.

A short 2.2-mile (3.5 km) easterly extension of State Route 92
California State Route 92
State Route 92 is an east-west highway in the San Francisco Bay area between Half Moon Bay near the coast in the west and downtown Hayward at its junction with State Route 238 and State Route 185. It is most notable for being the route that traverses the San Mateo Bridge. It has interchanges with...

, from the current end at SR 238
California State Route 238
State Route 238 is a north–south highway in the U.S. state of California. The route is a divided multilane surface highway in the southeastern part of the San Francisco Bay Area. SR 238 connects Interstate 580 in Castro Valley and Interstate 680 in Fremont.-Route description:SR 238 goes...

 to I-580, is unconstructed.

All of State Route 93 is unconstructed, on a 17.9-mile (28.8 km) route from the proposed SR 77 near Moraga
Moraga, California
Moraga is a suburban incorporated town located in Contra Costa County, California, United States, in the San Francisco Bay Area. It is named in honor of Joaquin Moraga, whose grandfather was José Joaquin Moraga, second in command to Juan Bautista de Anza...

 northwest, west, and southwest to I-580 in Richmond
Richmond, California
Richmond is a city in western Contra Costa County, California, United States. The city was incorporated on August 7, 1905. It is located in the East Bay, part of the San Francisco Bay Area. It is a residential inner suburb of San Francisco, as well as the site of heavy industry, which has been...

.

100–199

State Route 100 is a completely unconstructed beachfront loop in Santa Cruz
Santa Cruz, California
Santa Cruz is the county seat and largest city of Santa Cruz County, California in the US. As of the 2010 U.S. Census, Santa Cruz had a total population of 59,946...

, stretching 4.5 miles (7.2 km) from SR 1
California State Route 1
State Route 1 , more often called Highway 1, is a state highway that runs along much of the Pacific coast of the U.S. state of California. It is famous for running along some of the most beautiful coastlines in the world, leading to its designation as an All-American Road.Highway 1 does not run...

 west of downtown to SR 1 near SR 17.
State Route 102 is a 37.5-mile (60.4 km) unconstructed freeway that would generally parallel I-80
Interstate 80 in California
In the U.S. state of California, Interstate 80 , a major east–west route of the Interstate Highway System, has its western terminus in San Francisco, California, United States. From there it heads east across the Bay Bridge to Oakland, where it turns north and crosses the Carquinez Bridge...

, beginning at I-5
Interstate 5 in California
Interstate 5 is a major north–south route of the Interstate Highway System in the U.S. state of California. It begins at the Mexico – United States border at the San Ysidro crossing, goes north across the length of California and crosses into Oregon south of the Medford-Ashland metropolitan...

 near SR 99
California State Route 99
California State Route 99 , commonly known as Highway 99 or, simply, as 99 , is a north–south state highway in the U.S. state of California, stretching almost the entire length of the Central Valley...

 north of Sacramento
Sacramento, California
Sacramento is the capital city of the U.S. state of California and the county seat of Sacramento County. It is located at the confluence of the Sacramento River and the American River in the northern portion of California's expansive Central Valley. With a population of 466,488 at the 2010 census,...

 and heading east across I-80 and northeast to I-80 near Auburn
Auburn, California
Auburn is the county seat of Placer County, California. Its population at the 2010 census was 13,330. Auburn is known for its California Gold Rush history.Auburn is part of the Greater Sacramento area.- History :...

.
8.3 miles (13.4 km) of State Route 104
California State Route 104
State Route 104 is a west–east state highway in California's Central Valley. 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...

are unconstructed, stretching east from SR 49
California State Route 49
State Route 49 is a north–south state highway in the U.S. state of California that passes through many historic mining communities of the 1849 California gold rush. Highway 49 is numbered after the "49ers", the waves of immigrants who swept into the area looking for gold, and a portion of it...

 near Amador City
Amador City, California
Amador City is a city in Amador County, California, United States. The population was 185 at the 2010 census, down from 196 at the 2000 census.- Geography :Amador City is located at ....

 to SR 88
California State Route 88
State Route 88 , also known as the Carson Pass Highway, is a California State Highway that travels in an east–west direction, from Stockton, crossing the Sierra Nevada at Carson Pass, and ending at the border with Nevada, whereupon it becomes Nevada State Route 88, eventually terminating at U.S...

 near Pine Grove.

A 21.5-mile (34.6 km) extension of State Route 108
California State Route 108
State Route 108, also known as Highway 108, is a numbered state highway in California. SR 108 runs generally northeast across central California from downtown Modesto near the SR 99/SR 132 interchange, crossing the Sierra Nevada at Sonora Pass, to U.S. Route 395 near the Nevada state line...

is unconstructed, from its present west end at SR 132
California State Route 132
State Route 132 is a route in the Central Valley that leads to the Sierra Nevada foothills and the California Gold Country. It also connects the city of Modesto with the San Francisco Bay Area via I-580, although this route is discouraged due to it being a two-lane road between Modesto and...

 in Modesto
Modesto, California
Modesto is a city in, and is the county seat of, Stanislaus County, California. With a population of approximately 201,165 at the 2010 census, Modesto ranks as the 18th largest city in the state of California....

 southwest to I-5
Interstate 5 in California
Interstate 5 is a major north–south route of the Interstate Highway System in the U.S. state of California. It begins at the Mexico – United States border at the San Ysidro crossing, goes north across the length of California and crosses into Oregon south of the Medford-Ashland metropolitan...

 near Crows Landing
Crows Landing, California
Crows Landing is a census-designated place in Stanislaus County, California. Crows Landing is about southeast of Patterson. It also gives its name to a brand of wine produced in the area. Crows Landing sits at an elevation of...

.

The southern 1.3 miles (2.1 km) of the 2-mile (3 km) State Route 109
California State Route 109
State Route 109 is a short, unsigned state highway in the U.S. state of California. It is the portion of University Avenue that runs between U.S. Route 101 and State Route 84 in East Palo Alto and Menlo Park. The route is unsigned; however, it is noted on programs like Yahoo Maps.-Route...

, which stretches from US 101 to SR 84
California State Route 84
State Route 84 is a split-section California State Highway consisting of two sections. The first section is an east–west arterial road running from San Gregorio to Menlo Park, across the Dumbarton Bridge through Fremont and Newark and ending at I-580 in Livermore. The route overlaps the...

 in East Palo Alto
East Palo Alto, California
East Palo Alto is a city in San Mateo County, California, United States.-Overview:As of the 2010 census, the population of East Palo Alto was 28,155. It is situated on the San Francisco Peninsula, roughly halfway between the cities of San Francisco and San Jose...

, remain unconstructed.

A 10.5-mile (16.9 km) eastern segment of State Route 118
California State Route 118
State Route 118 is a state highway in the U.S. state of California that begins running west to east through Ventura and Los Angeles counties in southern California. It travels from Saticoy in Ventura County east to Lake View Terrace in Los Angeles...

is unconstructed, running from I-210 near Sunland east to proposed SR 249 north of La Cañada Flintridge
La Cañada Flintridge, California
La Cañada Flintridge is a small and affluent city in Los Angeles County, California, United States whose population at the 2010 census was 20,246, down from 20,318 at the 2000 census. According to Forbes, as of 2010, La Cañada Flintridge ranks as the 143rd most expensive U.S...

.

State Route 122 is a completely unconstructed 61.3-mile (98.7 km) freeway, defined to run from SR 14
California State Route 14
State Route 14 is a north–south state highway in the U.S. state of California, largely in the Mojave Desert. The southern portion of the highway is signed as the Antelope Valley Freeway. The route connects Interstate 5, or Golden State Freeway, near Santa Clarita and with U.S. Route 395 near...

 south of Palmdale
Palmdale, California
Palmdale is a city located in the center of northern Los Angeles County, California, United States.Palmdale was the first community within the Antelope Valley to incorporate as a city on August 24, 1962; 47 years later, voters approved creating a charter city in November, 2009. Palmdale is...

 northeast and east past the east end of proposed SR 48 to SR 58
California State Route 58
State Route 58 is an east-west highway across the California Coast Ranges, the southern San Joaquin Valley, the Tehachapi Mountains, which border the southern Sierra Nevada, and the Mojave Desert. It runs between its western terminus near Santa Margarita and its eastern terminus at Barstow...

 west of Barstow
Barstow, California
Barstow is a city in San Bernardino County, California, United States. The population was 22,639 at the 2010 census, up from 21,119 at the 2000 census. Barstow is located north of San Bernardino....

.
The portion of State Route 125
California State Route 125
State Route 125 is a state highway in the U.S. state of California that currently runs from State Route 905 in Otay Mesa near the U.S.–Mexico border to State Route 52 in Santee....

north of SR 52
California State Route 52
State Route 52 is a state highway in the U.S. state of California in San Diego County, that extends from La Jolla Parkway at Interstate 5 in La Jolla to Route 67 in Santee. Route 52 is a freeway for its entire length...

 near Santee
Santee, California
Santee is a suburban city in San Diego County, California with a population of 53,413 at the 2010 census. Although it is a part of the East County region, Santee is located just from the Pacific Ocean. The city is connected to the coastline by State Route 52, a six-lane freeway that runs from...

 is unconstructed, ending at proposed SR 56
California State Route 56
State Route 56 runs from Interstate 5 in the Carmel Valley neighborhood of San Diego to Interstate 15. Route 56 was originally planned in 1964 to connect to the north end of State Route 125 and continue east to State Route 67, but the city of Poway worked to make sure that would not be possible...

 near Poway
Poway, California
Poway is a city in San Diego County, California. Originally an unincorporated community in San Diego County, Poway officially became a city in December 1980. Even though Poway lies geographically in the middle of San Diego County, most consider its relative location as north county inland...

.

The easternmost 10.4-mile (16.7 km) portion of State Route 128
California State Route 128
State Route 128 is a state highway in the U.S. state of California, connecting the Mendocino coast to the Central Valley through the state's Wine Country.-Route description:...

is unconstructed, connecting I-505 near Winters
Winters, California
Winters is a city in Yolo County, California. The population was 6,624 as of the 2010 census. It is part of the Sacramento–Arden-Arcade–Roseville Metropolitan Statistical Area. The city is near Lake Berryessa. It is noted as the one-time residence of cartoonist R...

 (the current end) with SR 113
California State Route 113
State Route 113 is a north–south state highway in the U.S. state of California that runs from around west of Rio Vista at State Route 12 to State Route 99 south of Yuba City. It is an important connecting route between Interstate 80 and Interstate 5. Past the southern terminus are...

 near Davis
Davis, California
Davis is a city in Yolo County, California, United States. It is part of the Sacramento–Arden-Arcade–Roseville Metropolitan Statistical Area...

.

The majority of State Route 130
California State Route 130
State Route 130 is a state highway in the U.S. state of California in Santa Clara County. The route runs between San Jose, California, and Mount Hamilton. Much of its length goes through the Diablo Range as Mount Hamilton Road where it is a narrow 2 lane highway...

is unconstructed, stretching 46.8 miles (75.3 km) from the present end at Mount Hamilton east to SR 33
California State Route 33
State Route 33 is a north–south state highway in the U.S. state of California. SR 33 replaced part of U.S. Route 399 in 1964 during the "great renumbering" of routes. In the unincorporated sections of Kern County it is known as the West Side Highway...

 near Patterson
Patterson, California
Patterson is a city in Stanislaus County, California, United States, located off Interstate 5. It is 45 miles southeast of Livermore and part of the Modesto Metropolitan Statistical Area. Patterson is known as the "Apricot Capital of the World"; the town holds an annual Apricot Fiesta to...

.
The eastern segment of State Route 142
California State Route 142
State Route 142, also known as Carbon Canyon Road for most of its length, runs southwest from State Route 71 in Chino Hills, through Olinda Village to its intersection with Lambert Road and Valencia Avenue in Brea. At the intersection, the highway turns south onto Valencia Avenue and ends at...

, the 9.5-mile (15.3 km) Carbon Canyon Freeway, is unconstructed, running from SR 71
California State Route 71
State Route 71 is the Chino Valley Freeway, formerly the Corona Expressway and before then the Temescal Freeway, a freeway/highway of about 15 miles in length located entirely within Southern California, United States...

 near Chino
Chino, California
Chino is a city in San Bernardino County, California, United States. It is located in the western end of the Riverside-San Bernardino Area and it is easily accessible via the Chino Valley and Pomona freeways....

 to SR 210 near Upland
Upland, California
Upland is a city in San Bernardino County, California, located at an elevation of 1,242 feet . As of the 2010 census, the city had a population of 73,732, up from 68,393 at the 2000 census. It was incorporated on May 15, 1906, after previously being named North Ontario.-History and culture:Upland...

.

State Route 143 is a 19.7-mile (31.7 km) unconstructed eastern bypass of Sacramento
Sacramento, California
Sacramento is the capital city of the U.S. state of California and the county seat of Sacramento County. It is located at the confluence of the Sacramento River and the American River in the northern portion of California's expansive Central Valley. With a population of 466,488 at the 2010 census,...

, beginning at SR 99
California State Route 99
California State Route 99 , commonly known as Highway 99 or, simply, as 99 , is a north–south state highway in the U.S. state of California, stretching almost the entire length of the Central Valley...

 near Elk Grove
Elk Grove, California
Elk Grove is a city in Sacramento County, California, located just south of the state capital of Sacramento. It is part of the Sacramento–Arden-Arcade–Roseville Metropolitan Statistical Area. As of the 2010 census, the population of the city is 153,015...

 and ending at the east end of SR 244
California State Route 244
State Route 244 is a short unsigned freeway connection northeast of Sacramento, California, United States. It connects the junction of Interstate 80 and Interstate 80 Business with Auburn Boulevard State Route 244 (SR 244) is a short unsigned freeway connection northeast of Sacramento,...

 near Carmichael
Carmichael, California
Carmichael is a census-designated place in Sacramento County, California, United States. It is part of the Sacramento–Arden-Arcade–Roseville Metropolitan Statistical Area. The population was 61,762 at the 2010 census, up from 49,742 at the 2000 census.-Geography and geology:Carmichael...

.
State Route 148 is an unconstructed southern bypass of Sacramento
Sacramento, California
Sacramento is the capital city of the U.S. state of California and the county seat of Sacramento County. It is located at the confluence of the Sacramento River and the American River in the northern portion of California's expansive Central Valley. With a population of 466,488 at the 2010 census,...

, stretching 16.3 miles (26.2 km) from I-5
Interstate 5 in California
Interstate 5 is a major north–south route of the Interstate Highway System in the U.S. state of California. It begins at the Mexico – United States border at the San Ysidro crossing, goes north across the length of California and crosses into Oregon south of the Medford-Ashland metropolitan...

 east to proposed SR 65
California State Route 65
State Route 65 , commonly known as Highway 65, is a north–south state highway in the U.S. state of California composed of two segments connecting Bakersfield to Exeter and Roseville to Olivehurst...

.
A 15.1-mile (24.3 km) easterly extension of State Route 152
California State Route 152
State Route 152 is a state highway that runs near the latitudinal middle of the U.S. state of California from Watsonville to Route 99 southeast of Merced...

is unconstructed, connecting the current east end at SR 99
California State Route 99
California State Route 99 , commonly known as Highway 99 or, simply, as 99 , is a north–south state highway in the U.S. state of California, stretching almost the entire length of the Central Valley...

 near Chowchilla
Chowchilla, California
Chowchilla is a city in Madera County, California, United States. Chowchilla is located northwest of Madera, at an elevation of 240 feet . It is a principal city of the Madera–Chowchilla Metropolitan Statistical Area. The population was 18,720 at the 2010 census, up from 11,127 at the 2000...

 with proposed SR 65
California State Route 65
State Route 65 , commonly known as Highway 65, is a north–south state highway in the U.S. state of California composed of two segments connecting Bakersfield to Exeter and Roseville to Olivehurst...

.

A 62.9-mile (101.2 km) portion in the middle of State Route 162, between Covelo
Covelo, California
Covelo is a census-designated place in Mendocino County, California, United States. Covelo is located east-northeast of Laytonville, at an elevation of 1398 feet...

 and Elk Creek
Elk Creek, California
Elk Creek is a census-designated place in Glenn County, California. It is located northwest of Willows, at an elevation of 745 feet .The 2010 census reported that Elk Creek's population was 163. It is home to the smallest public high school in California, which has an enrollment of about 35...

, is unconstructed.

The southernmost 1.4 mile (2.3 km) of State Route 164 is unconstructed, connecting SR 19 with I-605 near Pico Rivera
Pico Rivera, California
Pico Rivera is a city located in southeastern Los Angeles County, California, United States. The city is situated approximately 11 miles southeast of downtown Los Angeles, on the eastern edge of the Los Angeles basin, and on the southern edge of the area known as the San Gabriel Valley...

.

An 18.2-mile (29.3 km) portion in the middle of State Route 169 along the Klamath River
Klamath River
The Klamath River is an American river that flows southwest through Oregon and northern California, cutting through the Cascade Range to empty into the Pacific Ocean. The river drains an extensive watershed of almost that stretches from the high desert country of the Great Basin to the temperate...

 is unconstructed, between Klamath Glen
Klamath Glen, California
Klamath Glen is an unincorporated community in Del Norte County, California. It is located on the Klamath River from its mouth, at an elevation of 46 feet ....

 and Johnsons
Johnsons, California
Johnsons is an unincorporated community in Humboldt County, California. It is located on the Klamath River northwest of Weitchpec, at an elevation of 180 feet ....

.

The southerly section of State Route 170 is the 4.5-mile (7.2 km) unconstructed Skyway Freeway, which would link Los Angeles International Airport
Los Angeles International Airport
Los Angeles International Airport is the primary airport serving the Greater Los Angeles Area, the second-most populated metropolitan area in the United States. It is most often referred to by its IATA airport code LAX, with the letters pronounced individually...

 with SR 90
California State Route 90
State Route 90 is a state highway in Southern California, United States. It consists of two unconnected pieces in Greater Los Angeles....

. The segment between SR 90
California State Route 90
State Route 90 is a state highway in Southern California, United States. It consists of two unconnected pieces in Greater Los Angeles....

 and SR 2 does not have a current routing. The portion of La Cienega Blvd. built to expressway standards was likely intended to be part of this routing.

56.0 miles (90.1 km) of State Route 178
California State Route 178
State Route 178 is a route 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....

is unconstructed, from east of Ridgecrest
Ridgecrest, California
Ridgecrest, formerly known as Crumville, was incorporated as a city in 1913. It is located in the Indian Wells Valley in northeastern Kern County, California, adjacent to the Naval Air Weapons Station China Lake . Ridgecrest is the only incorporated city along US 395 in Kern County...

 to Death Valley National Park
Death Valley National Park
Death Valley National Park is a national park in the U.S. states of California and Nevada located east of the Sierra Nevada in the arid Great Basin of the United States. The park protects the northwest corner of the Mojave Desert and contains a diverse desert environment of salt-flats, sand dunes,...

.

State Route 179 is an entirely unconstructed 13.8-mile (22.2 km) route connecting I-80
Interstate 80 in California
In the U.S. state of California, Interstate 80 , a major east–west route of the Interstate Highway System, has its western terminus in San Francisco, California, United States. From there it heads east across the Bay Bridge to Oakland, where it turns north and crosses the Carquinez Bridge...

 near Vacaville
Vacaville, California
Vacaville, California is a city located in the northeastern portion of the San Francisco Bay Area in Solano County. The city is nearly half way between Sacramento and San Francisco on I-80. It sits approximately from Sacramento, and from San Francisco...

 with SR 128
California State Route 128
State Route 128 is a state highway in the U.S. state of California, connecting the Mendocino coast to the Central Valley through the state's Wine Country.-Route description:...

 near Lake Berryessa
Lake Berryessa
Lake Berryessa is the largest lake in Napa County, California. This reservoir is formed by the Monticello Dam, which provides water and hydroelectricity to the North Bay region of the San Francisco Bay Area....

. A locally maintained traversable route has been defined via Cherry Glenn Road and Pleasants Valley Road.
State Route 180
California State Route 180
State Route 180 is a state highway in California, United States, which runs through the heart of the San Joaquin Valley from Mendota through Fresno to Kings Canyon National Park, with an unbuilt segment defined west to Paicines....

is unconstructed from its present end at SR 33
California State Route 33
State Route 33 is a north–south state highway in the U.S. state of California. SR 33 replaced part of U.S. Route 399 in 1964 during the "great renumbering" of routes. In the unincorporated sections of Kern County it is known as the West Side Highway...

 in Mendota
Mendota, California
Mendota is a city in Fresno County, California, United States. The population was 11,014 at the 2010 census. The State Routes 180 and 33 run through the agricultural city. Mendota is located south-southeast of Firebaugh, at an elevation of 174 feet ....

 west to I-5
Interstate 5 in California
Interstate 5 is a major north–south route of the Interstate Highway System in the U.S. state of California. It begins at the Mexico – United States border at the San Ysidro crossing, goes north across the length of California and crosses into Oregon south of the Medford-Ashland metropolitan...

, and from I-5 west to SR 25
California State Route 25
State Route 25 is a state highway in the U.S. state of California between Gilroy and State Route 198. This route is part of the California Freeway and Expressway System and is eligible for the State Scenic Highway System.-Route description:...

 near Paicines
Paicines, California
The unincorporated community of Paicines is located at above mean sea level in San Benito County, California along State Route 25. Guide signs along SR25 say the community is south of Hollister. The community is at the intersection of Panoche Road and SR25...

, a total of 81.2 miles (130.7 km). The latter segment would be along Panoche Road, but Caltrans has no plans to take it over.

State Route 181 is a 9.5-mile (15.3 km) route, entirely unconstructed, following Mirabel Road and River Road from SR 116
California State Route 116
State Route 116 is a state highway in the U.S. state of California in Sonoma County. The route runs from State Route 1 on the Pacific coast near Jenner to State Route 121 south of Sonoma.-Route description:...

 near Forestville
Forestville, California
Forestville is a census-designated place in Sonoma County, California, United States. The town came into existence during the late 1860s and was originally named Forrestville, after one its founders, but the spelling long ago became standardized with one "r". The population was 3,293 at the 2010...

 to US 101 north of Santa Rosa
Santa Rosa, California
Santa Rosa is the county seat of Sonoma County, California, United States. The 2010 census reported a population of 167,815. Santa Rosa is the largest city in California's Wine Country and fifth largest city in the San Francisco Bay Area, after San Jose, San Francisco, Oakland, and Fremont and 26th...

. Caltrans has no plans to take it over.
The central portion of State Route 190
California State Route 190
State Route 190 is a state highway in the U.S. state of California that is split into two parts by the Sierra Nevada. The western portion of begins at Tipton at a junction with State Route 99 and heads east towards Porterville before ending at Quaking Aspen in the Sequoia National Forest...

is unconstructed, stretching 43.0 miles (69.2 km) from Quaking Aspen in the Sequoia National Forest
Sequoia National Forest
Sequoia National Forest is located in the southern Sierra Nevada mountains of California. The U.S. National Forest is named for the majestic Giant Sequoia trees which populate 38 distinct groves within the boundaries of the forest....

 to US 395
U.S. Route 395 in California
In the U.S. state of California, U.S. Route 395 is a route which traverses from Interstate 15 near the southern city limits of Hesperia, north to the Oregon state line in Modoc County near Goose Lake...

 at Olancha
Olancha, California
Olancha is a census-designated place in Inyo County of the U.S. state of California. Olancha is located on U.S. Route 395 in California, south-southeast of Independence, at an elevation of 3658 feet...

.

200–999

State Route 211
California State Route 211
State Route 211 is a California state highway in Humboldt County that connects Ferndale with U.S. 101.This route is part of the California Freeway and Expressway System.-Route description:...

, formerly part of SR 1
California State Route 1
State Route 1 , more often called Highway 1, is a state highway that runs along much of the Pacific coast of the U.S. state of California. It is famous for running along some of the most beautiful coastlines in the world, leading to its designation as an All-American Road.Highway 1 does not run...

, stretches only 5 miles (8 km) from US 101 near Fernbridge
Fernbridge, California
Fernbridge is an unincorporated community at an elevation of in Humboldt County, California, named for an historic bridge, west-northwest of Fortuna.-Town of Fernbridge:...

 to Ferndale
Ferndale, California
Ferndale is a city in Humboldt County, California, United States. Known for its well-preserved Victorian buildings, the city's population was 1,371 at the 2010 census, down from 1,382 at the 2000 census...

. A locally maintained traversable route, which the state does not plan to take over, continues south from Ferndale for 102.8 miles (165.4 km) along Mattole Road, Wilder Ridge Road, Kings Peak Road, Chemise Mountain Road, and Usal Road to SR 1 near Rockport
Rockport, California
Rockport is an unincorporated community in Mendocino County, California. It is located north-northwest of Westport, at an elevation of 30 feet ....

.
A 5.0-mile (8.0 km) western extension of State Route 217
California State Route 217
State Route 217 is a short two-and-a-half mile long spur route in the U.S. state of California.-Route description:It connects the University of California, Santa Barbara and the Santa Barbara Municipal Airport with U.S. Route 101, which is the major highway that connects Santa Barbara with other...

is unconstructed, leading from the present end at the University of California at Santa Barbara northwest to US 101.

The southern end of State Route 227
California State Route 227
State Route 227 is a state highway in the U.S. state of California and located in San Luis Obispo County. It is currently an alternate route to U.S. Route 101 in Arroyo Grande, meeting US 101 again in the city of San Luis Obispo...

is unconstructed, stretching 1.7 miles (2.7 km) from US 101 in Arroyo Grande
Arroyo Grande, California
Arroyo Grande is a city in San Luis Obispo County, California, United States. The population was 17,252 at the 2010 census.-Geography:Arroyo Grande is a small coastal town with historic, suburban, and rural elements located at...

 to SR 1
California State Route 1
State Route 1 , more often called Highway 1, is a state highway that runs along much of the Pacific coast of the U.S. state of California. It is famous for running along some of the most beautiful coastlines in the world, leading to its designation as an All-American Road.Highway 1 does not run...

 east of Oceano
Oceano, California
Oceano is a census-designated place in San Luis Obispo County, California, United States. The population was 7,286 at the 2010 census, up from 7,260 at the 2000 census.-Geography:Oceano is located at ....

.
State Route 230 is a 4.1-mile (6.6 km) completely unconstructed route in southeastern San Francisco
San Francisco, California
San Francisco , officially the City and County of San Francisco, is the financial, cultural, and transportation center of the San Francisco Bay Area, a region of 7.15 million people which includes San Jose and Oakland...

 and San Mateo County
San Mateo County, California
San Mateo County is a county located in the San Francisco Bay Area of the U.S. state of California. It covers most of the San Francisco Peninsula just south of San Francisco, and north of Santa Clara County. San Francisco International Airport is located at the northern end of the county, and...

, linking US 101 with I-280
Interstate 280 (California)
Interstate 280 is a 57-mile long north–south Interstate Highway in the San Francisco Bay Area of Northern California. It connects San Jose and San Francisco, running along just to the west of the cities of San Francisco Peninsula for most of its route.I-280 from its northern end at King...

 along the San Francisco Bay
San Francisco Bay
San Francisco Bay is a shallow, productive estuary through which water draining from approximately forty percent of California, flowing in the Sacramento and San Joaquin rivers from the Sierra Nevada mountains, enters the Pacific Ocean...

. Except for the southern end, the route was part of SR 87
California State Route 87
State Route 87 , locally called Highway 87 or the Guadalupe Freeway, is a north–south state highway entirely within San Jose, California, United States. Its name was changed from Guadalupe Parkway in 2004 after its entire constructed length was upgraded to a freeway...

 until 1970, when SR 87 was cancelled north of SR 237
California State Route 237
State Route 237 runs from El Camino Real in Mountain View to Interstate 680 in Milpitas. It runs south of the San Francisco Bay, connecting the East Bay to the Peninsula.This route is part of the California Freeway and Expressway System....

. Some of the plans for a Southern Crossing across the bay would have used SR 230.

State Route 234 and State Route 235 are unconstructed southern and northern bypasses of Stockton
Stockton, California
Stockton, California, the seat of San Joaquin County, is the fourth-largest city in the Central Valley of the U.S. state of California. With a population of 291,707 at the 2010 census, Stockton ranks as this state's 13th largest city...

, each linking I-5
Interstate 5 in California
Interstate 5 is a major north–south route of the Interstate Highway System in the U.S. state of California. It begins at the Mexico – United States border at the San Ysidro crossing, goes north across the length of California and crosses into Oregon south of the Medford-Ashland metropolitan...

 with SR 99
California State Route 99
California State Route 99 , commonly known as Highway 99 or, simply, as 99 , is a north–south state highway in the U.S. state of California, stretching almost the entire length of the Central Valley...

. Caltrans has no plans to build either, but has identified locally-maintained traversable routes: French Camp Road for the 3.4-mile (5.5 km) SR 234, and Eight Mile Road for the 6.4-mile (10.3 km) SR 235.
A northern extension of State Route 238
California State Route 238
State Route 238 is a north–south highway in the U.S. state of California. The route is a divided multilane surface highway in the southeastern part of the San Francisco Bay Area. SR 238 connects Interstate 580 in Castro Valley and Interstate 680 in Fremont.-Route description:SR 238 goes...

is unconstructed, stretching west 1.6 miles (2.6 km) from the end of I-238
Interstate 238
Interstate 238 is a short auxiliary route of the Interstate Highway System in the San Francisco Bay Area, California, United States. Part of State Route 238 until 1983, and still considered the same route by the California Department of Transportation , it connects Interstate 580 in Castro Valley...

 at I-580
Interstate 580 (California)
Interstate 580 is an 80-mile east–west Interstate Highway in Northern California. The heavily traveled spur route of Interstate 80 runs from San Rafael in the San Francisco Bay Area to Interstate 5 near Tracy in the Central Valley...

 to proposed SR 61
California State Route 61
State Route 61 is a California, United States, highway which runs through Alameda and along the Oakland International Airport. The western terminus is with State Route 260 at Webster Street in Alameda, and it runs along east Central Avenue and Encinal Avenue until reaching Broadway...

 near San Lorenzo
San Lorenzo, California
San Lorenzo , also known as San Lorenzo Village is a census-designated place in Alameda County, California, United States. The population was 23,452 at the 2010 census.-Geography:...

.

State Route 239 is a 17-mile (27.4 km) unconstructed route that would link I-580
Interstate 580 (California)
Interstate 580 is an 80-mile east–west Interstate Highway in Northern California. The heavily traveled spur route of Interstate 80 runs from San Rafael in the San Francisco Bay Area to Interstate 5 near Tracy in the Central Valley...

 at I-205
Interstate 205 (California)
Interstate 205 is a short Interstate Highway that connects Interstate 5 with Interstate 580 in the San Joaquin Valley of California. Along with those highways, I-205 forms the north side of a triangle around the city of Tracy...

 west of Tracy
Tracy, California
Tracy is the second most populated city in San Joaquin County, California, United States and an exurb of the San Francisco Bay Area. The population was 82,922 at the 2010 census.-History:...

 with SR 4 near Brentwood
Brentwood, California
Brentwood is a city in Contra Costa County, California, United States. It is located in the East Bay region of the San Francisco Bay Area. The population is 51,481 as of 2010....

. Caltrans has identified Mountain House Road and Byron Highway (CR J4) as a traversable route, but has no plans to maintain it. In 2005, the federal legislation known as SAFETEA-LU
Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users
The Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users is a funding and authorization bill that governs United States federal surface transportation spending. It was signed into law by President George W. Bush on August 10, 2005, and expired as of September 30, 2009...

 provided $14 million for the purpose of studying the route's corridor and funding its construction.
The south end of State Route 241
California State Route 241
State Route 241 is a state highway in the U.S. state of California. For its entire run, Route 241 is a toll road. Its northern half is part of the Eastern Toll Road while its southern half is part of the Foothill Toll Road....

, from Oso Parkway south to I-5
Interstate 5 in California
Interstate 5 is a major north–south route of the Interstate Highway System in the U.S. state of California. It begins at the Mexico – United States border at the San Ysidro crossing, goes north across the length of California and crosses into Oregon south of the Medford-Ashland metropolitan...

 near San Clemente
San Clemente, California
San Clemente is a city in Orange County, California. The population was 63,522 at the 2010 census. Located on the California Coast, midway between Los Angeles and San Diego at the southern tip of the county, it is known for its ocean, hill, and mountain views, a pleasant climate and its Spanish...

, is unconstructed.

Until 1994, State Route 244
California State Route 244
State Route 244 is a short unsigned freeway connection northeast of Sacramento, California, United States. It connects the junction of Interstate 80 and Interstate 80 Business with Auburn Boulevard State Route 244 (SR 244) is a short unsigned freeway connection northeast of Sacramento,...

included an unconstructed extension from Auburn Boulevard east to Fair Oaks Boulevard.

State Route 249 is a 13.5-mile (21.7 km) unconstructed route that would connect SR 2 north of La Cañada Flintridge
La Cañada Flintridge, California
La Cañada Flintridge is a small and affluent city in Los Angeles County, California, United States whose population at the 2010 census was 20,246, down from 20,318 at the 2000 census. According to Forbes, as of 2010, La Cañada Flintridge ranks as the 143rd most expensive U.S...

 with SR 14
California State Route 14
State Route 14 is a north–south state highway in the U.S. state of California, largely in the Mojave Desert. The southern portion of the highway is signed as the Antelope Valley Freeway. The route connects Interstate 5, or Golden State Freeway, near Santa Clarita and with U.S. Route 395 near...

 south of Palmdale
Palmdale, California
Palmdale is a city located in the center of northern Los Angeles County, California, United States.Palmdale was the first community within the Antelope Valley to incorporate as a city on August 24, 1962; 47 years later, voters approved creating a charter city in November, 2009. Palmdale is...

. Angeles Forest Highway (CR N3) follows the general alignment, but Caltrans has no plans to take it over.
State Route 251 is a completely unconstructed route, defined to extend from I-580
Interstate 580 (California)
Interstate 580 is an 80-mile east–west Interstate Highway in Northern California. The heavily traveled spur route of Interstate 80 runs from San Rafael in the San Francisco Bay Area to Interstate 5 near Tracy in the Central Valley...

 near Point San Quentin to SR 1
California State Route 1
State Route 1 , more often called Highway 1, is a state highway that runs along much of the Pacific coast of the U.S. state of California. It is famous for running along some of the most beautiful coastlines in the world, leading to its designation as an All-American Road.Highway 1 does not run...

 near Point Reyes Station
Point Reyes Station, California
Point Reyes Station is small unincorporated town located in western Marin County, California. Point Reyes Station is located south-southeast of Tomales, at an elevation of . Point Reyes Station is located along State Route 1 and is a gateway to the Point Reyes National Seashore, an extremely...

. The 1.6-mile (2.6 km) portion east of US 101 has a locally maintained traversable route on Sir Francis Drake Boulevard
Sir Francis Drake Boulevard
Sir Francis Drake Boulevard is an east–west arterial road in Marin County, California, running from just west of the Richmond-San Rafael Bridge to the trailhead for Point Reyes Lighthouse at the end of the Point Reyes Peninsula.It is named for the English explorer Sir Francis Drake, whose...

, and Caltrans is rebuilding it with the intent to adopt it. The rest is the proposed 22.9-mile (36.9 km) Point Reyes Freeway, and was part of SR 17 until 1984, when SR 17 over the Richmond-San Rafael Bridge
Richmond-San Rafael Bridge
The Richmond – San Rafael Bridge is the northernmost of the east–west crossings of the San Francisco Bay in California, USA, connecting Richmond on the east to San Rafael on the west end...

 became I-580.

Sir Francis Drake Boulevard roughly parallels the highway's length. If built, the highway was probably going to be called the "Point Reyes Freeway"; extra flyover ramps at the Sir Francis Drake Boulevard-U.S.-101 interchange suggest this.

The freeway was born due to an idea to develop west Marin County
Marin County, California
Marin County is a county located in the North San Francisco Bay Area of the U.S. state of California, across the Golden Gate Bridge from San Francisco. As of 2010, the population was 252,409. The county seat is San Rafael and the largest employer is the county government. Marin County is well...

, a traditionally rural area, into a sprawling area not usually found in Marin County. With all the new residents, local roads would have been overburdened. Chief among them was Sir Francis Drake Boulevard, a two lane road from Olema
Olema, California
Olema is an unincorporated community in Marin County, California. It is located on Olema Creek south-southeast of Point Reyes Station, at an elevation of 69 feet ....

 to Fairfax
Fairfax, California
Fairfax is an incorporated town in Marin County, California, United States. Fairfax is located west-northwest of San Rafael, at an elevation of 115 feet...

 before widening to 4 lanes as it passes through the Ross Valley
Ross Valley
Ross Valley is a valley Marin County, California. The city of Ross in addition to all or portions of San Anselmo, Fairfax, Kentfield, and San Rafael are located in the valley. Mount Tamalpais is to the west, the Red Hills to the east and San Rafael Bay to the south....

.

However, the development and freeway planning were stopped due to concerns about fragile ecosystems that urbanization
Urbanization
Urbanization, urbanisation or urban drift is the physical growth of urban areas as a result of global change. The United Nations projected that half of the world's population would live in urban areas at the end of 2008....

 would have damaged or destroyed. The animals, mostly egrets and the California red-legged frog
California Red-legged Frog
The California red-legged frog, Rana draytonii, is a moderate to large species of frog. It is known under the scientific name Rana draytonii, after being long included with the northern red-legged frog The California red-legged frog, Rana draytonii, is a moderate to large (4.4–14 cm) species...

 ended up being the main reason the freeway and redevelopment was defeated. There was another problem though: the plan put the entire area on the San Andreas Fault
San Andreas Fault
The San Andreas Fault is a continental strike-slip fault that runs a length of roughly through California in the United States. The fault's motion is right-lateral strike-slip...

. The decision to not redevelop West Marin made the freeway unnecessary, and it was therefore scrapped.
State Route 257 stretches 19.6 miles (31.5 km) from a proposed relocation of SR 34
California State Route 34
State Route 34 is a short state highway in the U.S. state of California.-Route description:SR 34 is part of the California Freeway and Expressway System....

 east of Port Hueneme
Port Hueneme, California
Port Hueneme is a small beach city in Ventura County, California surrounded by the city of Oxnard and the Pacific Ocean. The name derives from the Spanish spelling of the Chumash wene me, meaning "Resting Place". The area was discovered by Juan Rodríguez Cabrillo in the mid 16th century...

 west and northwest around Oxnard
Oxnard, California
Oxnard is the 113th largest city in the United States, 19th largest city in California and largest city in Ventura County, California, by way of population. It is located at the western edge of the fertile Oxnard Plain, and is an important agricultural center, with its distinction as the...

 to US 101 near Ventura
Ventura, California
Ventura is the county seat of Ventura County, California, United States, incorporated in 1866. The population was 106,433 at the 2010 census, up from 100,916 at the 2000 census. Ventura is accessible via U.S...

. 5th Street and Harbor Boulevard has been identified as a traversable routing, but Caltrans has no plans to maintain the streets.
State Route 258 is a proposed 17-mile (27.4 km) freeway paralleling Western Avenue
Western Avenue (Los Angeles)
Western Avenue is a major four lane street slightly west of Downtown Los Angeles and the center portion of Los Angeles County. Besides Sepulveda Boulevard, it is one of the longest north/south streets in Los Angeles...

 from the north end of SR 213
California State Route 213
State Route 213 is a state highway in the U.S. state of California, in Los Angeles County. The California Legislature has designated the route as Western Avenue from 25th Street in San Pedro north to the San Diego Freeway...

 at I-405
Interstate 405 (California)
Interstate 405 is a major north–south Interstate Highway in Southern California. It is a bypass of Interstate 5, running along the western areas of the Greater Los Angeles Area from Irvine in the south to near San Fernando in the north...

 near Torrance
Torrance, California
Torrance is a city incorporated in 1921 and located in the South Bay region of Los Angeles County, California, United States. Torrance has of shore-front beaches on the Pacific Ocean, quieter and less well-known by tourists than others on the Santa Monica Bay, such as those of neighboring...

 north to US 101 near Hollywood
Hollywood, Los Angeles, California
Hollywood is a famous district in Los Angeles, California, United States situated west-northwest of downtown Los Angeles. Due to its fame and cultural identity as the historical center of movie studios and movie stars, the word Hollywood is often used as a metonym of American cinema...

.

The easternmost 3.5 miles (5.6 km) of State Route 270
California State Route 270
State Route 270 is a state highway located in the U.S. state of California in Mono County. It is a spur route off of U.S. Route 395 south of Bridgeport, leading into Bodie State Historic Park.-Route description:...

are unconstructed, being maintained by the California Department of Parks and Recreation
California Department of Parks and Recreation
The California Department of Parks and Recreation, also known as California State Parks, manages the California state parks system. The system administers 278 parks and 1.4 million acres , with over of coastline; of lake and river frontage; nearly 15,000 campsites; and of hiking, biking, and...

 inside the Bodie State Historical Park.

State Route 276 is an 8.5-mile (13.7 km) unconstructed route from SR 198
California State Route 198
State Route 198 is an east–west state highway that connects the California Central Coast to the mid-Central Valley at Visalia, although the most-traveled portion is in the Central Valley itself....

 near Three Rivers
Three Rivers, California
Three Rivers is a census-designated place in Tulare County, California, United States. The population was 2,182 at the 2010 census, down from 2,248 at the 2000 census....

 east to Sequoia National Park
Sequoia National Park
Sequoia National Park is a national park in the southern Sierra Nevada east of Visalia, California, in the United States. It was established on September 25, 1890. The park spans . Encompassing a vertical relief of nearly , the park contains among its natural resources the highest point in the...

. It initially stretched further east through the park (though it was not part of the park at the time) to Mineral King, where the Walt Disney Company planned to build a recreational development.

The majority of State Route 281
California State Route 281
State Route 281 is a partially constructed state highway in Lake County, California, United States. It is a northeastern loop off of State Route 29 along the edge of Clear Lake.-Route description:...

is unconstructed, stretching 14.0 miles (22.5 km) from the current end at Clear Lake northwest to SR 29
California State Route 29
State Route 29 is a state highway in the U.S. state of California that travels in a north–south direction from State Route 20 in Upper Lake to Interstate 80 in Vallejo.-Route description:...

 south of Lakeport
Lakeport, California
Lakeport is an incorporated city and county seat of Lake County, California. Lakeport is located on the west shore of Clear Lake, at an elevation of 1355 feet...

.
State Route 380, a 4.4-mile (7.1 km) western extension of I-380
Interstate 380 (California)
Interstate 380 is a short 3.3-mile east–west spur Interstate Highway in the San Francisco Bay Area of Northern California, connecting Interstate 280 in San Bruno to U.S. Route 101 near the San Francisco International Airport . The highway primarily consists of only three intersections:...

, was to connect the end of I-380 at I-280
Interstate 280 (California)
Interstate 280 is a 57-mile long north–south Interstate Highway in the San Francisco Bay Area of Northern California. It connects San Jose and San Francisco, running along just to the west of the cities of San Francisco Peninsula for most of its route.I-280 from its northern end at King...

 in San Bruno
San Bruno, California
San Bruno is a city in San Mateo County, California, United States. The population was 41,114 at the 2010 census.The city is adjacent to San Francisco International Airport and Golden Gate National Cemetery.-Geography:San Bruno is located at...

 with SR 1
California State Route 1
State Route 1 , more often called Highway 1, is a state highway that runs along much of the Pacific coast of the U.S. state of California. It is famous for running along some of the most beautiful coastlines in the world, leading to its designation as an All-American Road.Highway 1 does not run...

 near Pacifica
Pacifica, California
Pacifica is a city in San Mateo County, California, on the coast of the Pacific Ocean between San Francisco and Half Moon Bay.-Overview:The City of Pacifica is spread along a six mile stretch of the north central California coastal beach and hills, nestled in several small valleys spanning between...

.

State Route 605 is a 3-mile (4.8 km) unconstructed southern extension of I-605
Interstate 605
Interstate 605 is a major north–south Interstate Highway in the Greater Los Angeles Area of Southern California...

 from I-405
Interstate 405 (California)
Interstate 405 is a major north–south Interstate Highway in Southern California. It is a bypass of Interstate 5, running along the western areas of the Greater Los Angeles Area from Irvine in the south to near San Fernando in the north...

 to SR 1
California State Route 1
State Route 1 , more often called Highway 1, is a state highway that runs along much of the Pacific coast of the U.S. state of California. It is famous for running along some of the most beautiful coastlines in the world, leading to its designation as an All-American Road.Highway 1 does not run...

 near Seal Beach
Seal Beach, California
-Neighborhoods:Seal Beach encompasses the Leisure World retirement gated community with roughly 9,000 residents. This was the first major planned retirement community of its type in the U.S...

.

The southernmost segment of Interstate 710
Interstate 710
Interstate 710 is a major north–south interstate freeway running for 23 miles through Los Angeles County, California...

, 3.5 miles (5.6 km) from SR 1
California State Route 1
State Route 1 , more often called Highway 1, is a state highway that runs along much of the Pacific coast of the U.S. state of California. It is famous for running along some of the most beautiful coastlines in the world, leading to its designation as an All-American Road.Highway 1 does not run...

 south and west to SR 47
California State Route 47
State Route 47 is a state highway in the U.S. state of California, connecting Terminal Island to the mainland in the Los Angeles area. From its south end at I-110 in San Pedro, it heads east across the Vincent Thomas Bridge to the island and the end of state maintenance...

 on Terminal Island
Terminal Island
Terminal Island is an island located in Los Angeles County, California between Los Angeles Harbor and Long Beach Harbor. Originally a mudflat known to the Spanish as Isla Raza de Buena Gente, and later called Rattlesnake Island, it has officially been Terminal Island since 1918...

 recently added to the legislative definition, is currently being upgraded. At the northern end, 3.5 miles (5.6 km) from Valley Boulevard
Valley Boulevard
Valley Boulevard is a street in Southern California, running east from Los Angeles to Pomona, where it becomes Holt Boulevard, and a continuation from Fontana to Colton. It generally parallels Interstate 10 and State Route 60, and is the original alignment of U.S. Route 60...

 north to California Boulevard in Pasadena
Pasadena, California
Pasadena is a city in Los Angeles County, California, United States. Although famous for hosting the annual Rose Bowl football game and Tournament of Roses Parade, Pasadena is the home to many scientific and cultural institutions, including the California Institute of Technology , the Jet...

 (where a freeway stub leading to an interchange with I-210
Interstate 210
Interstate 210 may refer to:*Interstate 210 or the Foothill Freeway, a major east-west freeway running through the valleys north and east of Los Angeles, California*Interstate 210 , a bypass route in Lake Charles, Louisiana...

 and SR 134 already exists) has been unconstructed for several decades due to community opposition, although Caltrans continues to study alternative alignments.
The westernmost segment of State Route 905
California State Route 905
State Route 905 is a state highway in San Diego, California that connects Interstate 5 and Interstate 805 in San Ysidro to the United States – Mexico border at Otay Mesa. The portions of the route from I-5 to I-805 and from Britannia Boulevard to the International border are freeway...

, 3.2 miles (5.1 km) from I-5
Interstate 5 in California
Interstate 5 is a major north–south route of the Interstate Highway System in the U.S. state of California. It begins at the Mexico – United States border at the San Ysidro crossing, goes north across the length of California and crosses into Oregon south of the Medford-Ashland metropolitan...

 southwest to the Mexican border
United States–Mexico border
The United States–Mexico border is the international border between the United States and Mexico. It runs from Imperial Beach, California, and Tijuana, Baja California, in the west to Matamoros, Tamaulipas, and Brownsville, Texas, in the east, and traverses a variety of terrains, ranging from major...

 is unconstructed, and Caltrans has no plans on pursuing this routing, particularly since there are no plans for a border crossing at this location. 4.2 miles (6.8 km) between a point east of I-805
Interstate 805
Interstate 805 is a major north–south Interstate Highway in Southern California. It is a bypass of Interstate 5, running along the eastern areas of the Greater San Diego area from San Ysidro near the Mexico–U.S...

 and SR 125
California State Route 125
State Route 125 is a state highway in the U.S. state of California that currently runs from State Route 905 in Otay Mesa near the U.S.–Mexico border to State Route 52 in Santee....

 is currently routed along Otay Mesa Boulevard, a six-lane expressway, with plans for an eventual full controlled-access freeway leading to the as-yet unconstructed SR 11.

External links

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