Mission Street is a north-south arterial thoroughfare in Daly City and San Francisco, California that runs from Daly Citys southern border to San Franciscos northeast waterfront. The street and San Franciscos Mission District through which it runs were named for the Spanish Mission Dolores, only the southern half is historically part of El Camino Real, which connected the missions. Part of Mission Street in Daly City is signed as part of State Route 82, from the south, Mission Street begins as a continuation of SR 82/El Camino Real at the Colma-Daly City border, just south of San Pedro Road. Mission Street runs north to the Top of the Hill district, where SR82 splits as San Jose Avenue to the northeast and it crosses the San Francisco city limits mid-block between Templeton Avenue in Daly City and Huron Avenue in San Francisco. Near Van Ness Avenue, the road turns northeast again and travels through Mid-Market, regis Museum Tower,555 Mission Street, Millennium Tower,535 Mission Street,350 Mission Street, and the Salesforce Tower
San Mateo County, California
San Mateo County is a county located in the U. S. state of California. As of the 2010 census, the population was 718,451, the county seat is Redwood City. San Mateo County is included in the San Francisco-Oakland-Hayward, CA Metropolitan Statistical Area, and is part of the San Francisco Bay Area and it covers most of the San Francisco Peninsula. San Francisco International Airport is located at the end of the county. The countys built-up areas are mostly suburban with some areas being very urban, San Mateo County was formed in 1856 after San Francisco County, one of the states 18 original counties since Californias statehood in 1850, was split apart. Until 1856, San Franciscos city limits extended west to Divisadero Street and Castro Street, in response to the lawlessness and vigilantism that escalated rapidly between 1855 and 1856, the California government decided to divide the county. A straight line was drawn across the tip of the San Francisco Peninsula just north of San Bruno Mountain.
The consolidated city-county of San Francisco was formed by an introduced by Horace Hawes. San Mateo County was officially organized on 18 April 1857 under a bill introduced by Senator T. G, San Mateo County annexed part of northern Santa Cruz County in March 1868, including Pescadero and Pigeon Point. Although the forming bill named Redwood City the county seat, a May 1856 election marked by unblushing frauds, perpetuated on an unorganized and wholly unprotected community by thugs and ballot stuffers from San Francisco named Belmont the county seat. The election results were declared illegal and the county government was moved to Redwood City, Redwood Citys status as county seat was upheld in two succeeding elections in May 1861 and 9 December 1873, defeating San Mateo and Belmont. Another election in May 1874 named San Mateo the county seat, but the supreme court overturned that election on 24 February 1875. San Mateo County bears the Spanish name for Saint Matthew, until about 1850, the name appeared as San Matheo.
According to the U. S. Census Bureau, the county has an area of 741 square miles. It is the third-smallest county in California by land area, a number of bayside watercourses drain the eastern part of the county including San Bruno Creek and Colma Creek. Streams draining the county include Frenchmans Creek, Pilarcitos Creek, Naples Creek, Arroyo de en Medio. These streams originate along the spur of the Santa Cruz Mountains that run through the county. San Mateo County straddles the San Francisco Peninsula, with the Santa Cruz Mountains running its entire length, the county encompasses a variety of habitats including estuarine, oak woodland, redwood forest, coastal scrub and oak savannah
Interstate 880 is an Interstate Highway in the San Francisco Bay Area connecting San Jose and Oakland, running parallel to the northeastern shore of San Francisco Bay. For most of its route, I-880 is officially known as the Nimitz Freeway, after World War II fleet admiral Chester Nimitz and this route is part of the California Freeway and Expressway System. The southern terminus of I-880 is at its interchange with Interstate 280, from there, it heads roughly northeast past the San Jose International Airport to U. S. Route 101. In Oakland, I-880 passes by Oakland International Airport, Oakland-Alameda County Coliseum, the northern terminus of I-880 is in Oakland at the junction with Interstate 80 and Interstate 580, near the eastern approach of the Bay Bridge. I-880 between I-238 in San Leandro and the MacArthur Maze is used as a truck route. Officially, the Nimitz Freeway designation is Route 880 from Route 101 to Route 80, as named by Senate Concurrent Resolution 23 and it turned north at Cypress Street, passing through the Bay Bridge Distribution Structure and following a newly constructed alignment to El Cerrito.
The first short piece of the new Eastshore Freeway opened to traffic on July 22,1949 and it was extended to 98th Avenue on June 1,1950, Lewelling Boulevard on June 13,1952, and Jackson Street on June 5,1953. At the San Jose end, the overlap with Route 5 between Bayshore Highway and Warm Springs was bypassed on July 2,1954, within Oakland, the double-decker Cypress Street Viaduct opened on June 11,1957, connecting the freeway with the San Francisco–Oakland Bay Bridge. As these sections opened, Sign Route 17 was moved from its old surface routing, other than Route 5 south of Warm Springs, the portion from San Leandro into Oakland was kept as part of Route 105. Prior to 1984, the known as I-880 used to be part of State Route 17. SR17 used to run from Santa Cruz all the way through San Jose, Oakland, in 1947, construction commenced on a freeway to replace the street routing of SR17 through the East Bay. In 1958, the south of the MacArthur Maze was renamed the Nimitz Freeway in honor of WWII Admiral Nimitz.
The northern portion of I-880 was designated Business U. S. Route 50 for a time between the I-80 interchange and downtown Oakland, from 1971 to 1983, Interstate 880 was the original route designation for the Beltline Freeway, the northern bypass freeway for the Sacramento area. The now-designated Capital City Freeway was the original I-80 routing, continuing southwest directly into downtown Sacramento, I-80 was re-routed along the Beltline Freeway in 1983, while the Capital City Freeway became Interstate 80 Business. This was the greatest loss of life caused by that earthquake, the freeway reopened in July 1997 on a new route parallel to railroad tracks around the outskirts of West Oakland with the entire project being completed shortly before 2000. Although only about three miles in length, the replacement freeway cost over $1, the former path of the structure, Cypress Street, was renamed Mandela Parkway, and the median where the freeway stood became a landscaped linear park. Several aspects of the I-880 facility have been constructed in designated floodplains such as the 1990 interchange improvements at Dixon Landing Road, in that case the Federal Highway Administration was required to make a finding that there was no feasible alternative to the new ramp system as designed.
In that same study, the FHWA produced an analysis to support the fact that adequate wetlands mitigation had been designed into the improvement project and this activity has occurred in Oakland, San Leandro, Hayward and Fremont
San Francisco, officially the City and County of San Francisco, is the cultural and financial center of Northern California. It is the birthplace of the United Nations, the California Gold Rush of 1849 brought rapid growth, making it the largest city on the West Coast at the time. San Francisco became a consolidated city-county in 1856, after three-quarters of the city was destroyed by the 1906 earthquake and fire, San Francisco was quickly rebuilt, hosting the Panama-Pacific International Exposition nine years later. In World War II, San Francisco was a port of embarkation for service members shipping out to the Pacific Theater. Politically, the city votes strongly along liberal Democratic Party lines, San Francisco is the headquarters of five major banking institutions and various other companies such as Levi Strauss & Co. Dolby, Weebly, Pacific Gas and Electric Company, Pinterest, Uber, Mozilla, Wikimedia Foundation, as of 2016, San Francisco is ranked high on world liveability rankings.
The earliest archaeological evidence of habitation of the territory of the city of San Francisco dates to 3000 BC. Upon independence from Spain in 1821, the became part of Mexico. Under Mexican rule, the system gradually ended, and its lands became privatized. In 1835, Englishman William Richardson erected the first independent homestead, together with Alcalde Francisco de Haro, he laid out a street plan for the expanded settlement, and the town, named Yerba Buena, began to attract American settlers. Commodore John D. Sloat claimed California for the United States on July 7,1846, during the Mexican–American War, montgomery arrived to claim Yerba Buena two days later. Yerba Buena was renamed San Francisco on January 30 of the next year, despite its attractive location as a port and naval base, San Francisco was still a small settlement with inhospitable geography. The California Gold Rush brought a flood of treasure seekers, with their sourdough bread in tow, prospectors accumulated in San Francisco over rival Benicia, raising the population from 1,000 in 1848 to 25,000 by December 1849.
The promise of fabulous riches was so strong that crews on arriving vessels deserted and rushed off to the gold fields, leaving behind a forest of masts in San Francisco harbor. Some of these approximately 500 abandoned ships were used at times as storeships and hotels, many were left to rot, by 1851 the harbor was extended out into the bay by wharves while buildings were erected on piles among the ships. By 1870 Yerba Buena Cove had been filled to create new land, buried ships are occasionally exposed when foundations are dug for new buildings. California was quickly granted statehood in 1850 and the U. S. military built Fort Point at the Golden Gate, silver discoveries, including the Comstock Lode in Nevada in 1859, further drove rapid population growth. With hordes of fortune seekers streaming through the city, lawlessness was common, and the Barbary Coast section of town gained notoriety as a haven for criminals, entrepreneurs sought to capitalize on the wealth generated by the Gold Rush
Mountain View, California
Mountain View is a city located in Santa Clara County, United States, named for its views of the Santa Cruz Mountains. From its origins as a stop, it grew to a large suburb with a pedestrian-friendly downtown, free wi-fi. The city borders Palo Alto and the San Francisco Bay to the north, Los Altos to the south, situated in the southern end of the San Francisco Peninsula in the San Francisco Bay Area, Mountain View is home to many high technology companies. In 1956, Shockley Semiconductor Laboratory, the first company to develop silicon semiconductor devices in what came to be known as Silicon Valley, was established in the city by William Shockley. Today, many of the largest technology companies in the world are headquartered in the city, including Google, Mozilla Foundation and Intuit. The original Byte Shop computer store was opened at 1063 El Camino Real, Mountain View by Paul Terrell, the Santa Clara Valley Transportation Authority integrates the city with the neighboring cities of Palo Alto, Los Altos, and Sunnyvale.
The Mexican land grant of Rancho Pastoria de las Borregas was given in 1842 by Alta California Governor Juan Alvarado to Francisco Estrada. This grant was passed on to Mariano Castro, who sold half of the land to Martin Murphy, Jr. Eventually. First known as the center of Fremont Twp. before the first California 1852 census. Which meant that it was a predecessor to Mayfield and Palo Alto, Mountain View Station, officially named in 1864, had its beginnings earlier as a stagecoach stop on the route between San Francisco and San Jose, including the Butterfield Overland Mail. & El Camino Real of today, was closer to what was once the town center. The early pioneers were buried at the old cemetery between Mercy & Church, off Castro Street, now the present city Library and park. Reverend Henry Merrill Henderson, born in Maryland, age 35, arrived in Spring of 1852, with his family to meet with relatives Ricketts and he was the first Baptist minister in town and soon was going by horse to Half-Moon Bay, and McCartersville for services.
His next-door neighbor arrived that year, Seligman Weilheimer and brother Samuel from Dossenheim, Germany, who built at that property, the Fremont twp. population was about 560 by 1860, less Mayfield Post office section, which began north of present San Antonio Road. The towns early growth was due to agriculture, William Bubb being a figure, buying 80 acres to farm in October 1851. His heirs expanded and intermarried in the area, agriculture remained the primary industry into the middle of the 20th century. The U. S. Navys adjacent 1000 acre Moffet Field Complex began after 1931, after World War II, the population grew significantly with the development of the aerospace and electronics industries. Between 1950 and 1960, the population grew from 6,563 to 30,889, high technology is the foundation of the local economy, and there exist few remnants of the citys agricultural past
San Bruno, California
San Bruno is a city in San Mateo County, United States, incorporated in 1914. The population was 41,114 at the 2010 United States Census, according to the United States Census Bureau, the city has a total area of 5.5 square miles, all of it land. San Bruno City Hall sits at an elevation of 41 feet above sea level. Portions of Mills Park and Rollingwood are very hilly, featuring canyons, many of them now in culverts, flow from springs in the hills toward San Francisco Bay. Just west of Skyline Boulevard and outside of city limits is San Andreas Lake, the lake is one of several reservoirs used by the San Francisco Water Department, providing water to San Francisco and several communities in San Mateo County, including San Bruno west of I-280. San Bruno enjoys a mild Mediterranean climate characterized by cool, dry summers and chilly, since 1927, the National Weather Service has maintained a weather station at the nearby San Francisco International Airport. According to the records, January is the coldest month with an average high of 55.9 °F.
Frost occurs occasionally during the months, snowfall is very rare. Measurable snowfalls occurred on December 11,1932, and February 5,1976, in recent years, traces of snow have been reported on December 27,1988, January 8,1989, and February 24,1996. Freezing temperatures occur on an average of only 1.3 days annually, the coldest winter temperature on record was 20 °F on December 11,1932, the same day 1.0 inch of snow fell. September is the warmest month with a high of 72.7 °F. Temperatures exceed 90 °F on an average of 4.0 days annually and low overcast are common during the night and morning hours in the summer months, which are generally very dry except for occasional light drizzle from the fog. On rare occasions moisture moving up from tropical storms has produced thunderstorms or showers in the summer, gusty westerly winds are common in the afternoon during the summer. The highest summer temperature was 106 °F on June 14,1961, a high of 105 °F was recorded on July 17,1988, and a high of 103 °F was recorded on September 14,1971.
Until August 1,1993, it had never reached 100 °F in August, due to thermal inversions, summer temperatures in the higher hills are often much higher than at the airport. Thunderstorms occur several times a year, mostly during the winter months, the annual average days with measurable precipitation is 65.2 days. The most rainfall in a month at the airport was 13.64 inches in February 1998, nylund reported 6.09 inches in Crestmoor during a 24-hour period in January 1967. Winter storms are accompanied by strong southerly winds
U.S. Route 101 in California
U. S. Route 101 in the state of California 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, US101 was one of the original national routes established in 1926. Significant portions of US101 between the Los Angeles area and the San Francisco Bay Area follow El Camino Real, the road connecting the former Alta Californias 21 missions. US101 has designated as the Santa Ana Freeway, Hollywood Freeway, Ventura Freeway, South Valley Freeway. This route is part of the California Freeway and Expressway System, the south terminus of US101 is in Los Angeles, about one mile east of downtown Los Angeles at the East Los Angeles Interchange, known as the Commuters Complex. This southernmost portion is named the Santa Ana Freeway, inheriting that title as the extension of the roadway now known as I-5. From here, US101 becomes the Hollywood Freeway and it heads to Hollywood and up through the Cahuenga Pass before reaching the San Fernando Valley.
US101 intersects with SR134 and SR170 at the known as the Hollywood Split. Here, the alignment of US101 shifts to the alignment of SR134, though confusing, the Hollywood Freeway name continues northward from this interchange on SR170, and the Ventura Freeway name continues eastward to SR134. From the Hollywood Split, US101 is an east–west highway and it meets with I-405 in Sherman Oaks, an interchange which holds claim to the most traveled intersection in the nation. Upon reaching Ventura, there is an interchange with SR126, North of Ventura, US101 switches intermittently between freeway and expressway status, but there are no traffic signals until San Francisco. From Ventura and through Santa Barbara, US101 closely follows the Pacific coastline until Gaviota State Park, at Gaviota State Park, the highway shifts back from an east–west highway to a north–south alignment. About one mile north of this point, US101 passes through the Gaviota Tunnel, a few miles north of the Gaviota Tunnel, SR1 splits from US101 and heads northwest, running along the Pacific coastline parallel and to the west of US101.
US101 passes through Buellton, Los Alamos, Santa Maria, South of Santa Maria, US101 widens from a four-lane highway to a six-lane freeway. SR166 joins US101 for about 3 miles before splitting just north of the city limits, farther north, SR1 rejoins US101 between Pismo Beach and San Luis Obispo. Then US101 takes a route through the Salinas Valley, while Highway 1 heads northwest, running along the Pacific coastline in California, parallel. A steep segment between San Luis Obispo and Atascadero is known as the Cuesta Grade, North of Atascadero, the highway joins SR46 for about three miles through Paso Robles. From Paso Robles to Salinas, US101 is a known as the Salinas River Valley Highway
California is the most populous state in the United States and the third most extensive by area. Located on the western coast of the U. S, California is bordered by the other U. S. states of Oregon and Arizona and shares an international border with the Mexican state of Baja California. Los Angeles is Californias most populous city, and the second largest after New York City. The Los Angeles Area and the San Francisco Bay Area are the nations second- and fifth-most populous urban regions, California has the nations most populous county, Los Angeles County, and its largest county by area, San Bernardino County. The Central Valley, an agricultural area, dominates the states center. What is now California was first settled by various Native American tribes before being explored by a number of European expeditions during the 16th and 17th centuries, the Spanish Empire claimed it as part of Alta California in their New Spain colony. The area became a part of Mexico in 1821 following its war for independence.
The western portion of Alta California was organized as the State of California, the California Gold Rush starting in 1848 led to dramatic social and demographic changes, with large-scale emigration from the east and abroad with an accompanying economic boom. If it were a country, California would be the 6th largest economy in the world, fifty-eight percent of the states economy is centered on finance, real estate services and professional, scientific and technical business services. Although it accounts for only 1.5 percent of the states economy, the story of Calafia is recorded in a 1510 work The Adventures of Esplandián, written as a sequel to Amadis de Gaula by Spanish adventure writer Garci Rodríguez de Montalvo. The kingdom of Queen Calafia, according to Montalvo, was said to be a land inhabited by griffins and other strange beasts. This conventional wisdom that California was an island, with maps drawn to reflect this belief, shortened forms of the states name include CA, Cal. Calif. and US-CA.
Settled by successive waves of arrivals during the last 10,000 years, various estimates of the native population range from 100,000 to 300,000. The Indigenous peoples of California included more than 70 distinct groups of Native Americans, ranging from large, settled populations living on the coast to groups in the interior. California groups were diverse in their organization with bands, villages. Trade and military alliances fostered many social and economic relationships among the diverse groups, the first European effort to explore the coast as far north as the Russian River was a Spanish sailing expedition, led by Portuguese captain Juan Rodríguez Cabrillo, in 1542. Some 37 years English explorer Francis Drake explored and claimed a portion of the California coast in 1579. Spanish traders made unintended visits with the Manila galleons on their trips from the Philippines beginning in 1565
California Department of Transportation
The California Department of Transportation is an executive department within the U. S. state of California. Caltrans manages the highway system and is actively involved with public transportation systems throughout the state. It supports Amtrak California and the Capitol Corridor, the department is part of the state cabinet-level California State Transportation Agency. Like the majority of government agencies, Caltrans is headquartered in Sacramento. In 2015, Caltrans released a new statement, Provide a safe, sustainable and efficient transportation system to enhance California’s economy. The earliest predecessor of Caltrans was the Bureau of Highways, which was created by the California Legislature and this agency consisted of three commissioners who were charged with analyzing the state road system and making recommendations. At the time, there was no highway system, since roads were purely a local responsibility. After the commissioners submitted their report to the governor on November 25,1896, voters approved an $18 million bond issue for the construction of a state highway system in 1910, and the first Highway Commission was convened in 1911.
On August 7,1912, the department broke ground on its first construction project, the year 1912 saw the founding of the Transportation Laboratory and the creation of seven administrative divisions. In 1913, the legislature started requiring vehicle registration and allocated the funds to support regular highway maintenance. In 1921, the legislature turned the Department of Engineering into the Department of Public Works, the history of Caltrans and its predecessor agencies during the 20th century was marked by many firsts. In late 1972, the legislature approved a reorganization in which the Department of Public Works was merged with the Department of Aeronautics to become the modern Department of Transportation, for administrative purposes, Caltrans divides the State of California into 12 districts, supervised by district offices. Most districts cover multiple counties, District 12 is the district with one county. The largest districts by population are District 4 and District 7, like most state agencies, Caltrans maintains its headquarters in Sacramento, which is covered by District 3.
Official California Department of Transportation website Named Highways, Freeways and Other Appurtenances in California
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 traverses the San Mateo Bridge. It has interchanges with three freeways, Interstate 280, U. S. Route 101 in or near San Mateo and it connects indirectly to Interstates 238 and 580 by way of Haywards Foothill Boulevard, which carries Route 238 and flows directly into Route 92. This route is part of the California Freeway and Expressway System and is eligible for the State Scenic Highway System, however, it is not a scenic highway as defined by Caltrans. Between Half Moon Bay and Interstate 280, Route 92 winds through the Coast Range as a narrow, the east-bound uphill portion was upgraded with a long passing lane. Between Interstate 280 and Interstate 880 it is entirely a divided highway, including the toll San Mateo-Hayward Bridge. East of Interstate 880 the route becomes a surface street in Hayward.
All of Route 92 that is not already a freeway or a bridge has been proposed as a freeway. An upgrade of the intersection with Main Street in Half Moon Bay is in the planning stage. The project took four years, and was completed in October 2011, State Route 92 traverses through significant habitat areas including wetland, California oak woodland and grassland. The San Mateo section was referred to as the 19th Avenue Freeway which was the street name where the freeway now exits. This section is known as the J. Arthur Younger Freeway. 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, 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, California Roads portal San Francisco Bay Area portal Caltrans, Route 92 road conditions California @ AARoads.
com - State Route 92 California Highways, SR92
Palo Alto, California
Palo Alto is a charter city located in the northwest corner of Santa Clara County, California, in the San Francisco Bay Area of the United States. The city shares its borders with East Palo Alto, Mountain View, Los Altos, Los Altos Hills, Portola Valley and it is named after a coast redwood tree called El Palo Alto. Palo Alto was established by Leland Stanford Sr. when he founded Stanford University, following the death of his son and it has served as an incubator to several other high-technology companies such as Google, Logitech, Intuit and PayPal. As of the 2010 census, the total resident population is 64,403. Palo Alto is one of the most expensive cities in the United States, the recorded history of Palo Alto dates back to 1769, when Gaspar de Portolá noted an Ohlone settlement. This remains an area of known Indian mounds, a plaque at Middlefield Road and Embarcadero Road commemorates the area. The city got its name from a tall coast redwood tree, named El Palo Alto, a plaque there recounts the story of the Portolà expedition, a 63-man, 200-horse expedition from San Diego to Monterey from November 7–11,1769.
The group overshot Monterey in the fog and when they reached modern-day Pacifica, they ascended Sweeney Ridge, thinking the bay was too wide to cross, the group retraced their journey to Monterey, never becoming aware of the Golden Gate entrance to the Bay. Located south of the San Francisquito Creek, west of todays I-280, in 1835, Rafael Soto and family settled near the San Francisquito Creek near Newell and Middlefield, selling goods to travelers. Rafael Soto died in 1839, but his wife, Maria Antonia Mesa, was granted Rancho Rinconada del Arroyo de San Francisquito in 1841, in 1839, their daughter María Luisa Soto married John Coppinger, who was the grantee of Rancho Cañada de Raymundo. Rancho Cañada de Raymundo was West of San Francisquito Creek, and began at Alambique Creek, the border of Rancho Corte de Madera. Bear Gulch Creek flowed on his land in Portola Valley, the rancho abutted Buelnas grant near Skyline Boulevard and Matadero Creek. Upon Coppingers death, Maria inherited it and married a visiting boat captain, Greer owned a home on the site that is now Town & Country Village on Embarcadero and El Camino Real.
Greer Avenue and Court are named for him, to the west of Rafael Soto, near El Camino and following the Creek, was Rancho San Francisquito granted in 1839 to Antonio Buelna and wife Maria Concepcion. To the south of the Sotos, the brothers Secundino and Teodoro Robles in 1849 bought Rancho Rincon de San Francisquito from José Peña, where the Joness house was, east down Arastradero Rd. to the north property line of Alta Mesa Memorial Park and Terman Park. The property went along the bay to the Embarcadero, a boundary in the day, up to the Stanford University gates, up Galvez. The grant was bounded on the south by Mariano Castros Rancho Pastoria de las Borregas grant across San Antonio Road, thats the Robles Rancho, about 80% of Palo Alto and Stanford University. It was whittled down by 1863 through courts to 6,981 acres, stories say their grand hacienda was built on the former meager adobe of José Peña near Ferne off San Antonio Road, midway between Middlefield and Alma Street
State highways in California
The state highway system of the U. S. state of California is a network of highways that are owned and maintained by the Highway Division of the California Department of Transportation. Each highway is assigned a Route number in the Streets and Highways Code, most of these are numbered in a statewide system, and are known as State Route X. United States Numbered Highways are labeled US X, and Interstate Highways are Interstate X. Under the code, the state assigns a unique Route X to each highway, the California Highway Patrol is tasked with patrolling all state highways to enforce traffic laws. Californias highway system is governed under the states Streets and Highways Code, since July 1 of 1964, the majority of legislative route numbers, those defined in the Streets and Highways Code, match the sign route numbers. For example, Interstate 5 is listed as Route 5 in the code, the state may relinquish segments of highways and turn them over to local control. The state may delete a highway completely and turn over a state route to local control.
Business routes are not maintained by the state unless they are assigned legislative route numbers, State Route 14U, an old alignment of State Route 14, is the only one signed as such. Both types of suffixed routes are considered spurs, current or former unsigned suffixed routes include State Route 156U, signed as State Route 156 Business through Hollister, and State Route 180S, the freeway replacement for State Route 180 in Fresno. The first legislative routes were defined by the State Highway Bond Act in 1909, passed by the California State Legislature and these, and extensions to the system, were numbered sequentially. No signs were erected for these routes, the United States Numbered Highways were assigned by the American Association of State Highway Officials in November 1926, but posting did not begin in California until January 1928. These were assigned to some of the legislative routes in California. In 1934, after the expansion of the state highway system in 1933 by the California Legislature.
The California sign route numbers were assigned in a geographical system, odd-numbered routes ran north–south and even-numbered routes ran east–west. A rough grid was used inside the two regions, with the largest numbers — all less than 200 - in eastern California, the Interstate Highway System numbers were assigned by AASHO in late 1959. In 1963 and 1964, a renumbering of the legislative routes was made. Some changes were made to the sign routes, mostly related to decommissionings of U. S. Since the 1990s, many routes, especially in urban areas, have been deleted and turned over to local control. This transfers the cost of maintaining them from state to local budgets, not all cities have been prepared to accept such routes from Caltrans simultaneously, so many have been decommissioned from the state system one fragment at a time