SR 23 highlighted in red
|Defined by Streets and Highways Code § 323|
|Maintained by Caltrans|
|Length||32.030 mi (51.547 km)|
SR 23 is broken into pieces, and the length does not reflect the US 101 and SR 118 overlaps that would be required to make the route continuous.
|Counties||Los Angeles, Ventura|
State Route 23 (SR 23) is a state highway in the U.S. state of California that connects the Pacific coast and the Santa Monica Mountains to the Conejo and Santa Clara River valleys. It runs from Pacific Coast Highway (State Route 1) in Malibu in Los Angeles County to Ventura Street (State Route 126) in Fillmore in Ventura County.
SR 23 consists of three distinct sections. The southern section begins as Decker Canyon Road near Trancas in Malibu, where SR 23 intersects with the Pacific Coast Highway (State Route 1), or "PCH." This portion provides numerous vistas of the Santa Monica Mountains and the Pacific Ocean during the daytime, but extreme caution is advised, especially as the road nears PCH. It is a notoriously dangerous road, and the rusted chassis of cars that have gone over the side can still be seen. Philip Taylor Kramer, bassist with the rock band Iron Butterfly from 1974–1977, allegedly committed suicide by driving his van over the side along this route. Along its steep and winding path through the Santa Monica Mountains as an increasingly tight and twisting canyon road until its intersection with Potrero Road, SR 23 becomes Westlake Boulevard, where it departs Los Angeles County for Ventura County and heads roughly two miles northeast through the Westlake section of Thousand Oaks, a developed residential community. SR 23 then merges with Ventura Freeway (U.S. Route 101) and runs concurrently with it north to the Moorpark Freeway.
The middle section, known as the Moorpark Freeway, is a major route for traffic headed between Thousand Oaks and Moorpark. It starts in Thousand Oaks, splitting off from the concurrency with US 101 and heading north, with three lanes in both directions. The Moorpark Freeway terminates at the exit for Los Angeles Avenue when the freeway turns east to become the Ronald Reagan Freeway (State Route 118). Funding for widening of the freeway was approved August 18, 2005, with construction to begin in February 2006, to be completed in 2009. The widening was completed ahead of schedule in April 2008. However, traffic along this freeway during rush hour is extremely congested, particularly near the interchange with US 101.
The northernmost section begins at State Route 118 in Moorpark (called Los Angeles Avenue in Moorpark), and heads north as Grimes Canyon Road through orange groves and sandstone cliffs. In Fillmore, it terminates at State Route 126. The road in Fillmore actually continues past Route 126 up to the foot of the Los Padres National Forest.
On SR 23 from Tierra Rejada Road to Olsen Road (and vice versa) is a bike lane. After crossing Tierra Rejada Road (going north) and Olsen Road (going south), bicyclists are prohibited from crossing.
SR 23 is part of the California Freeway and Expressway System,and the freeway portion is part of the National Highway System, a network of highways that are considered essential to the country's economy, defense, and mobility by the Federal Highway Administration. SR 23 is known as the Military Intelligence Service Memorial Highway from US 101 to California Route 118, in honor of the Military Intelligence Service, the 100th Infantry Battalion, and the 442nd Regimental Combat Team, composed entirely of Japanese Americans.
State Route 23 has been designated as such since 1934. However, at this time it was also designated as Legislative Route 155. The freeway portion of SR 23 opened in several phases between 1971 and 1994.Before then, SR 23 ran along Moorpark Road and intersected with U.S. 101 near Newbury Park, although it still ran concurrently with U.S. 101, which was then an expressway.
SR 23 was designated as part of the Freeway and Expressway System in 1959.
The Decker Freeway was an unbuilt north–south freeway that would connect SR 118, US 101, and SR 1. The freeway was part of a 1958 plan by the Metropolitan Engineering Board, but was later considered to be geographically improbable and the plans were abandoned.
The freeway's southern portion, from SR 1 to US 101, follows the general alignment of Decker Canyon Road and Westlake Boulevard, a segment of SR 23. It would continue north before terminating at SR 118 near First Street.
Except where prefixed with a letter, postmiles were measured on the road as it was in 1964, based on the alignment that existed at the time, and do not necessarily reflect current mileage. R reflects a realignment in the route since then, M indicates a second realignment, L refers an overlap due to a correction or change, and T indicates postmiles classified as temporary (for a full list of prefixes, see the list of postmile definitions). Segments that remain unconstructed or have been relinquished to local control may be omitted. The numbers reset at county lines; the start and end postmiles in each county are given in the county column.
| Los Angeles |
|Malibu||0.00||South end of SR 23|
| Ventura |
|Thousand Oaks||T1.49||Portrero Road – Lake Sherwood, Hidden Valley|
|Interchange; south end of US 101 overlap; US 101 exit 40|
|South end of freeway on US 101|
|12B||North end of US 101 overlap; no exit number northbound; US 101 north exit 43A, south exit 43B|
|R3.70||13||Hillcrest Drive, Thousand Oaks Boulevard – Thousand Oaks||Southbound exit and northbound entrance|
|R6.03||15||Avenida de los Arboles|
|R7.17||16||Sunset Hills Boulevard|
|R8.21||17||Olsen Road – Simi Valley|
|Moorpark||R10.16||19||Tierra Rejada Road|
|North end of freeway|
|20B||Interchange; south end of SR 118 overlap; no exit number southbound; SR 118 south exits 18A-B|
|20A||North end of SR 118 overlap; no exit number southbound|
|Fillmore||24.17||North end of SR 23|
|24.17||A Street||Continuation beyond SR 126|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi|
State Route 22 is an east–west state highway in the U.S. state of California that serves southern Los Angeles County and northern Orange County. It runs between Pacific Coast Highway in Long Beach and the Costa Mesa Freeway in Orange by way of Garden Grove. The westernmost part of SR 22 runs along Long Beach's 7th Street. From West Garden Grove to its eastern terminus in Orange, it is known as the Garden Grove Freeway. It is one of the two principal east–west routes in Orange County.
State Route 133 is a state highway in the U.S. state of California, serving as an urban route in Orange County. It connects SR 1 in Laguna Beach through the San Joaquin Hills with several freeways in Irvine, ending at the SR 241, a toll road in the latter city. It is built as an expressway from SR 73 to Laguna Canyon Road, and past this, SR 133 is a freeway to I-5, and a tollway to SR 241 near the Santa Ana Mountains.
Route 710, consisting of the non-contiguous segments of State Route 710 and Interstate 710 (I-710), is a major north–south state highway and auxiliary Interstate Highway in the Los Angeles metropolitan area of the U.S. state of California. Also called the Los Angeles River Freeway prior to November 18, 1954, the highway was initially planned to connect Long Beach and Pasadena, but a gap in the route exists from Alhambra to Pasadena through South Pasadena due to community opposition to its construction.
The Hollywood Freeway is one of the principal freeways of Los Angeles, California and one of the busiest in the United States. It is the principal route through the Cahuenga Pass, the primary shortcut between the Los Angeles Basin and the San Fernando Valley. It is considered one of the most important freeways in the history of Los Angeles and instrumental in the development of the San Fernando Valley. It is the second oldest freeway in Los Angeles. From its southern end at the Four Level Interchange to its intersection with the Ventura Freeway in the southeastern San Fernando Valley, it is signed as part of U.S. Route 101. It is then signed as State Route 170 north to its terminus at the Golden State Freeway.
The Ventura Freeway is a freeway in southern California, United States, running from the Santa Barbara/Ventura county line to Pasadena in Los Angeles County. It is the principal east-west route through Ventura County and in the southern San Fernando Valley in Los Angeles County. From the Santa Barbara County line to its intersection with the Hollywood Freeway in the southeastern San Fernando Valley in Los Angeles, it is signed as U.S. Route 101, which was built in the late 1950s and opened on April 5, 1960. East of the Hollywood Freeway intersection, it is signed as State Route 134 which was built by 1971. Prior to the construction of a new alignment in 1971, the portion east of the Golden State Freeway was known as the Colorado Freeway in reference to nearby Colorado Boulevard, a historic thoroughfare in Pasadena and northeastern Los Angeles.
State Route 2 (SR 2) is a state highway in the U.S. state of California that runs from the Los Angeles Basin and through the San Gabriel Mountains to the edge of the Victor Valley in the Mojave Desert. Officially, it begins at the intersection of Centinela Avenue in the City of Los Angeles limits adjacent to the city of Santa Monica and extends all the way to SR 138 east of Wrightwood. The highway currently is divided into three segments, and it briefly runs concurrently with U.S. Route 101 (US 101) and Interstate 210 (I-210) to connect the segments. The western section of the highway is an old routing of US 66; the eastern portion is known as the Angeles Crest Highway, while the middle section is known as the Glendale Freeway along with multiple surface streets around US 101.
State Route 118 is a state highway in the U.S. state of California that runs west to east through Ventura and Los Angeles counties. It travels from State Route 126 at the eastern edge of Ventura immediately northwest of Saticoy, then through Saticoy, in Ventura County east to Interstate 210 near Lake View Terrace in Los Angeles. SR 118 crosses the Santa Susana Pass and the northern rim of the San Fernando Valley along its route.
State Route 126 is a state highway in the U.S. state of California that serves Ventura and Los Angeles counties. The route runs from U.S. Route 101 in Ventura to Interstate 5 in Santa Clarita through the Santa Clara River Valley. The highway is an important connector highway in Ventura County, and serves as an alternate route into the Santa Clarita Valley, and the San Fernando Valley area of Los Angeles and the High Desert of Antelope Valley.
The Southern California freeways are a vast network of interconnected freeways in the megaregion of Southern California, serving a population of 23 million people. The Master Plan of Metropolitan Los Angeles Freeways was adopted by the Regional Planning Commission in 1947 and construction began in the early 1950s. The plan hit opposition and funding limitations in the 1970s, and by 2004, only some 61% of the original planned network had been completed.
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. SR 39's northern terminus is at Islip Saddle on Angeles Crest Highway in the Angeles National Forest, but its northernmost 4.5-mile (7.2 km) segment has been closed to the public since 1978 due to a massive mud and rockslide. It would cost a total of $100 million USD to repair the road.
State Route 12 is a state highway in the U.S. state of California that travels in an east–west direction from State Route 116 in Sebastopol in Sonoma County to State Route 49 just north of San Andreas in Calaveras County. The route connects the Sonoma and Napa valleys with the Sacramento–San Joaquin River Delta and the Sierra Foothills. It is constructed to freeway standards from the Fulton Road/South Wright Road stoplight in Santa Rosa, to its partial interchange with Farmers Lane.
State Route 33 is a north–south state highway in the U.S. state of California. It runs north from U.S. Route 101 in Ventura through the Transverse Ranges and the western side of the San Joaquin Valley to Interstate 5 at a point east of Tracy. 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 addition, the California Legislature designated the entire Kern County portion as the Petroleum Highway in 2004. The southernmost portion in Ventura is a freeway known as the Ojai Freeway, while it is known as the Maricopa Highway from Ojai to Maricopa.
State Route 232 is a state highway in the U.S. state of California that runs along Vineyard Avenue in Ventura County, serving as a connector between US 101 in Oxnard and SR 118 near Saticoy.
State Route 27, commonly known by its street name Topanga Canyon Boulevard, is a state highway in the U.S. state of California that runs from the Pacific Coast Highway at Topanga State Beach near Pacific Palisades, through the Topanga Canyon in Topanga, and continuing through Woodland Hills, Canoga Park, West Hills, and Chatsworth to the Ronald Reagan Freeway.
State Route 43 is a north–south state highway in the U.S. State of California, routed along the southern San Joaquin Valley between SR 119 southwest of Bakersfield and SR 99 in Selma. SR 43 runs roughly parallel to SR 99, connecting the towns of Shafter, Wasco, Corcoran, Hanford, and Selma.
State Route 184, locally known as Weedpatch Highway, is a state highway in the U.S. state of California. Located in Kern County, it runs from the intersection of SR 223 and Wheeler Ridge Road near Arvin north to SR 178 in Bakersfield. It is mainly a 2-lane conventional highway, expanding to four lanes in Lamont and Bakersfield. The highway serves local agricultural land south of Bakersfield.
State Route 180 is a state highway in the U.S. state of California. It runs through the heart of the San Joaquin Valley from State Route 33 in Mendota through Fresno, and then east towards the Sierra Nevada to Kings Canyon National Park.
State Route 178 is a state highway in the U.S. state of California that exists in two constructed segments. The gap in between segments is connected by various local roads and State Route 190 through Death Valley National Park. The western segment runs from State Route 99 in Bakersfield and over the Walker Pass in the Sierra Nevada to the turnoff for the Trona Pinnacles National Natural Landmark. The eastern segment runs from the southeasterly part of Death Valley to Nevada State Route 372 at the Nevada state line.
U.S. Route 101 (US 101) is a major north–south United States Numbered Highway, stretching from Los Angeles, California to Tumwater, Washington. The California portion of US 101 is one of the last remaining and longest U.S. Routes still active in the state, and the longest highway of any kind in California. US 101 was also one of the original national routes established in 1926. Significant portions of US 101 between the Los Angeles area and the San Francisco Bay Area follow El Camino Real, the historic road connecting the former Alta California's 21 missions.
VCTC Intercity is a public transit agency providing bus service in Ventura County, California. It provides an intercity bus service between the cities of Ventura, Oxnard, Camarillo, Thousand Oaks, Moorpark, Santa Paula, and Fillmore in Ventura County, and to communities in neighboring Los Angeles and Santa Barbara counties. The agency is part of the Ventura County Transportation Commission, a governmental body that oversees transportation planning and funding in Ventura County.
|Wikimedia Commons has media related to California State Route 23 .|