State Route 91 (SR 91) is a major east–west state highway in the U.S. state of California that serves several regions of the Greater Los Angeles urban area. A freeway throughout its entire length, it officially runs from Vermont Avenue in Gardena, just west of the junction with the Harbor Freeway, east to Riverside at the junction with the Pomona and Moreno Valley freeways.
State Route 55 (SR 55) is an 18-mile (30-km) long north–south state highway that passes through suburban Orange County in the U.S. state of California. The portion of the route built to freeway standards is known as the Costa Mesa Freeway. SR 55 runs between Via Lido south of Pacific Coast Highway in Newport Beach and the Riverside Freeway in Anaheim to the north, intersecting other major Orange County freeways such as SR 22, SR 73, and Interstate 405 (I-405).
State Route 57 (SR 57), also known as the Orange Freeway for most of its length, 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 (I-5) and SR 22 near downtown Orange, locally known as the Orange Crush, to the Glendora Curve interchange with I-210 and SR 210 in Glendora. The highway provides a route across several spurs of the Peninsular Ranges, linking the Los Angeles Basin with the Pomona Valley and San Gabriel Valley.
The Santa Ana Freeway is one of the principal freeways in Southern California, connecting Los Angeles and its southeastern suburbs including the freeway's namesake, the city of Santa Ana. The freeway begins at its junction with the San Diego Freeway, called the El Toro Y, in Irvine, signed as I-5. From there, it generally goes southeast to northwest to the East Los Angeles Interchange, where it takes the designation of U.S. Route 101 (US 101). It then proceeds 2.95 miles (4.75 km) northwest to the Four Level Interchange in downtown Los Angeles. Formerly, the entirety of the route was marked as US 101 until the 1964 highway renumbering, which truncated US 101 to the East Los Angeles Interchange and designated the rest of the freeway as I-5.
The Ventura Freeway is a freeway in southern California, United States, that runs 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 (US 101), which was built in the late 1950s and opened on April 5, 1960. The segments from the Santa Barbara County line to Sea Cliff, and from Solimar Beach to Oxnard, are also concurrent with State Route 1 (SR 1), although no signs mention SR 1 there. East of the Hollywood Freeway intersection, the Ventura Freeway is signed as State Route 134 (SR 134), which was built by 1971.
Interstate 105 (I-105) is an east–west auxiliary Interstate Highway in the Greater Los Angeles urban area of Southern California. It runs from State Route 1 (SR 1) near El Segundo and Los Angeles International Airport (LAX) to I-605 in the City of Norwalk. It is commonly known as the Century Freeway after Century Boulevard which it parallels, and also officially known as the Glenn Anderson Freeway after the late congressman Glenn M. Anderson who advocated for its construction.
Colorado Boulevard is a major east–west street in Southern California. It runs from Griffith Park in Los Angeles east through Glendale, the Eagle Rock section of Los Angeles, Pasadena, and Arcadia, ending in Monrovia. The full route was once various state highways but is now locally maintained in favor of the parallel Ventura Freeway and Foothill Freeway (I-210).
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 90 is a state highway in the U.S. state of California that consists of two unconnected pieces in Greater Los Angeles.
Western Avenue is a major four-lane street in the city of Los Angeles and through the center portion of Los Angeles County, California. It is one of the longest north–south streets in Los Angeles city and county, apart from Sepulveda Boulevard. It is about 29 miles (47 km) long.
Vermont Avenue is one of the longest running north–south streets in City of Los Angeles and Los Angeles County, California. With a length of 23.3 miles (37.5 km), is the third longest of the north–south thoroughfares in the region. For most of its length between its southern end in San Pedro and south of Downtown Los Angeles, it runs parallel to the west of the Harbor Freeway (I-110).
State Route 42 (SR 42) is a decommissioned state highway in the southern region part of the U.S. state of California, running along Manchester Avenue, Manchester Boulevard and Firestone Boulevard in Los Angeles and the cities south of it. In its final official routing that lasted from 1968 to 2000, SR 42 ran from State Route 1 west of Inglewood east to what was then a direct interchange with Interstate 5 in Norwalk. Though signed as SR 42, it was officially Route 105 until it was replaced by the parallel Interstate 105 on October 14, 1993. The entire route was deleted from the California Freeway and Expressway System in 2000, with the remaining portion of SR 42 being relinquished to local jurisdictions in that year. The direct interchange with I-5 was later demolished in 2013 in favor widening that portion of the Interstate. However, some SR 42 signs may still remain along the route.
Santa Ana Canyon, or the Santa Ana Narrows, is the water gap where the Santa Ana River passes between the Santa Ana Mountains and the Chino Hills, near the intersection of Orange, Riverside, and San Bernardino counties, California. It receives particularly strong Santa Ana winds in comparison to surrounding areas, hence the name. Originally, U.S. Route 91 ran through the canyon; however, it has long since been re-signed or upgraded along the entirety of its former right-of-way in the state. California State Route 91 is its primary successor.
Greater Los Angeles has a complex multimodal transportation infrastructure, which serves as a regional, national and international hub for passenger and freight traffic. The transportation system of Greater Los Angeles includes the United States' largest port complex, seven commuter rail lines, Amtrak service, a subway system within the city of Los Angeles, and numerous highways. Los Angeles is integrated into the Interstate Highway System by Interstate 5, Interstate 10, and Interstate 15, along with numerous auxiliary highways and state routes. Bus service is also included locally within the area by numerous local government agencies. Subways and light commuter rail lines are present within Los Angeles proper, allowing mass transportation within the city. Commuter railroads are run by Metrolink. Amtrak has numerous railroad lines that connect Los Angeles to the rest of the country.
This article covers streets in Los Angeles, California between and including 41st Street and 250th Street. Major streets have their own linked articles; minor streets are discussed here.
Rosecrans Avenue is a major west-east thoroughfare in Los Angeles and Orange Counties, California, USA. It has a total length of 27.5 miles (44.3 km). The street is named after U.S. Union General William S. Rosecrans, who purchased 13,000 acres (5,300 ha) of Rancho Sausal Redondo southwest of Los Angeles in 1869. Rosecrans Avenue was originally named Drexel Avenue, and ran through the Rosecrans Rancho which is part of modern-day Gardena.
There are 9 routes assigned to the "N" zone of the California Route Marker Program, which designates county routes in California. The "N" zone includes county highways lying in Los Angeles and Orange counties.
La Habra–Fullerton–Yorba Linda Line was a Pacific Electric interurban line which traveled between Los Angeles and Yorba Linda.
SR 98 near Ocotillo 
