The South Bay is a region of the Los Angeles metropolitan area, located in the southwest corner of Los Angeles County. The name stems from its geographic location stretching along the southern shore of Santa Monica Bay. The South Bay contains sixteen cities plus portions of the City of Los Angeles and unincorporated portions of the county. The area is bounded by the Pacific Ocean on the south and west and generally by the City of Los Angeles on the north and east.
Greater Los Angeles is the most populous metropolitan area in the U.S. state of California, encompassing five counties in Southern California extending from Ventura County in the west to San Bernardino County and Riverside County in the east, with the city of Los Angeles and Los Angeles County at its center, and Orange County to the southeast. The Los Angeles–Anaheim–Riverside combined statistical area (CSA) covers 33,954 square miles (87,940 km2), making it the largest metropolitan region in the United States by land area. The contiguous urban area is 2,281 square miles (5,910 km2), whereas the remainder mostly consists of mountain and desert areas. With an estimated population of over 18.3 million, it is the second-largest metropolitan area in the country, behind New York, as well as one of the largest megacities in the world.
Cerritos is a city in Los Angeles County, California, United States, and is one of several cities that constitute the Gateway Cities of southeast Los Angeles County. It was incorporated on April 24, 1956. As of 2019, the population was 49,859. It is part of the Los Angeles–Long Beach–Anaheim, California Metropolitan Statistical Area designated by the Office of Management and Budget.
Norwalk is a city in Los Angeles County, California, United States. The population was 102,773 at the 2020 census.
The Orange County Transportation Authority (OCTA) is the transportation planning commission for Orange County, California, in the Los Angeles metropolitan area. OCTA is responsible for funding and implementing transit and capital projects for the transportation system in the county, including freeway expansions, express lane management, bus and rail transit operation, and commuter rail funding and oversight.
Interstate 605 is a 27-mile-long (43 km) major north–south auxiliary Interstate Highway in the Greater Los Angeles urban area of Southern California. It runs from I-405 and State Route 22 (SR 22) in Seal Beach in Orange County to I-210 just south of the Irwindale–Duarte border in Los Angeles County. The San Gabriel River Freeway closely parallels the San Gabriel River for most of its alignment, hence its name, which is one of the few Southern California freeways not named after a city along its route.
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.
Route 710, consisting of the non-contiguous segments of State Route 710 (SR 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.
Interstate 405 is a major north–south auxiliary Interstate Highway in Southern California. The entire route is known as the northern segment of the San Diego Freeway. I-405 is a bypass auxiliary route of I-5, running along the southern and western parts of the Greater Los Angeles urban area from Irvine in the south to Sylmar in the north.
Los Angeles has a complex multimodal transportation infrastructure, which serves as a regional, national and international hub for passenger and freight traffic. The system includes the United States' largest port complex; an extensive freight and passenger rail infrastructure, including light rail lines and rapid transit lines; numerous airports and bus lines; vehicle for hire companies; and an extensive freeway and road system. People in Los Angeles rely on cars as the dominant mode of transportation, but since 1990 the Los Angeles County Metropolitan Transportation Authority has built over one hundred miles (160 km) of light and heavy rail serving more and more parts of Los Angeles and the greater area of Los Angeles County; Los Angeles was the last major city in the United States to get a permanent rail system installed.
A vast network of interconnected freeways in the megaregion of Southern California serves a population of over 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.
The Imperial Highway is a west-east thoroughfare in the counties of Los Angeles, Orange, Riverside, San Diego, and Imperial in the U.S. state of California. The main portion of the existing route begins at Vista Del Mar in Los Angeles near the Los Angeles International Airport and ends at the Anaheim–Orange city line at Via Escola where it becomes Cannon Street. Historically, the Imperial Highway extended from Vista Del Mar to Calexico, where a portion of the highway still exists. The original route was replaced with other highways, leading the older portions of the Imperial Highway to fall out of use.
Atlantic Boulevard/Atlantic Avenue/Los Robles Avenue is a major north–south thoroughfare in eastern Los Angeles County, California.
Interstate 5 (I-5) is a major north–south route of the Interstate Highway System in the United States, running largely parallel to the Pacific Coast between the Mexican border and the Canadian border. The segment of I-5 in California runs across the length of the state from the Mexican border at the San Ysidro Port of Entry in the San Ysidro neighborhood of San Diego to the Oregon state line south of the Medford-Ashland metropolitan area. It is the longest interstate in California at 796.77 miles (1,282.28 km), and accounts for more than half of I-5's total length of 1,381.29 miles (2,222.97 km). It is also the second longest stretch of Interstate Highway with a single designation within a single state after I-10 in Texas.
Artesia Boulevard is a west-east thoroughfare in Los Angeles County and Orange County.
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.
The Southern California Association of Governments (SCAG) is the metropolitan planning organization (MPO) of six of the ten counties in Southern California, serving Imperial County, Los Angeles County, Orange County, Riverside County, San Bernardino County, and Ventura County. San Diego County's MPO is the San Diego Association of Governments, which is an unrelated agency.
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.
The West Santa Ana Branch is a rail right-of-way formerly used by the Pacific Electric's (PE) Santa Ana route in Los Angeles County and Orange County in Southern California. The Los Angeles County Metropolitan Transportation Authority (Metro) owns the segment of the right-of-way in Los Angeles County, and the Orange County Transportation Authority (OCTA) owns the segment in Orange County.
The Southeast Gateway Line is a planned light rail line, mostly following the Pacific Electric's historic West Santa Ana Branch, connecting Downtown Los Angeles to the city of Artesia, along with other cities in southeastern Los Angeles County.
