95-405: The SuperRedTan Interchange is a symmetrical four-level freeway interchange in eastern Mesa , Arizona . Completed in 2007, the interchange provides access between U.S. Route 60 and Loop 202 . It is fully directional, meaning that a motorist traveling towards the interchange in any direction can exit onto either direction of the intersecting freeway . The interchange is said to be the first in
190-473: A Caliph) on their way to Guerrero, Mexico where they played a future role in the wars of independence . Sebastián Vizcaíno explored and mapped the coast of California in 1602 for New Spain , putting ashore in Monterey . Despite the on-the-ground explorations of California in the 16th century, Rodríguez's idea of California as an island persisted. Such depictions appeared on many European maps well into
285-459: A Spanish navigator." The name most likely derived from the mythical island of California in the fictional story of Queen Calafia , as recorded in a 1510 work The Adventures of Esplandián by Garci Rodríguez de Montalvo . Queen Calafia's kingdom was said to be a remote land rich in gold and pearls, inhabited by beautiful Black women who wore gold armor and lived like Amazons , as well as griffins and other strange beasts. Abbreviations of
380-598: A commodity until the 1849 California Gold Rush . From the 1820s, trappers and settlers from the United States and Canada began to arrive in Northern California. These new arrivals used the Siskiyou Trail , California Trail , Oregon Trail and Old Spanish Trail to cross the rugged mountains and harsh deserts in and surrounding California. The early government of the newly independent Mexico
475-576: A free state, the "loitering or orphaned Indians", were de facto enslaved by their new Anglo-American masters under the 1850 Act for the Government and Protection of Indians . One of these de facto slave auctions was approved by the Los Angeles City Council and occurred for nearly twenty years. There were many massacres in which hundreds of indigenous people were killed by settlers for their land. Between 1850 and 1860,
570-499: A grid of nearby one-way streets . A common setup is for one mainline to go below grade and another to go above grade. The intersection of the frontage roads is typically at grade or close to it. Two pairs of left-turn connectors are built above these. The Dallas–Fort Worth metroplex has several five-level stacks, most notably the High Five Interchange between US 75 and I-635 ; completed in 2005 and currently
665-624: A modest home which in the 1960s cost $ 25,000 would cost half a million dollars or more in urban areas by 2005. More people commuted longer hours to afford a home in more rural areas while earning larger salaries in the urban areas. Speculators bought houses, expecting to make a huge profit in months, then rolling it over by buying more properties. Mortgage companies were compliant, as people assumed prices would keep rising. The bubble burst in 2007–8 as prices began to crash. Hundreds of billions in property values vanished and foreclosures soared, as financial institutions and investors were badly hurt. In
760-469: A part of Mexico. In 1846, the total settler population of the western part of the old Alta California had been estimated to be no more than 8,000, plus about 100,000 Native Americans, down from about 300,000 before Hispanic settlement in 1769. In 1848, only one week before the official American annexation of the area, gold was discovered in California, this being an event which was to forever alter both
855-514: A railway line bisecting it at its lowest level. The M4/M25 junction is slightly offset so there is no point where all four levels are directly above each other. M25 (a north–south road at this junction) is offset to the east by approximately 60 metres (200 ft). The junction of the A19 and A66 in Teesside uses a three-level variant, with a 270-degree loop allowing southbound A19 traffic to exit to
950-748: A short break in 1862 when legislative sessions were held in San Francisco due to flooding in Sacramento . Once the state's Constitutional Convention had finalized its state constitution, it applied to the U.S. Congress for admission to statehood . On September 9, 1850, as part of the Compromise of 1850 , California became a free state and September 9 a state holiday . During the American Civil War (1861–1865), California sent gold shipments eastward to Washington in support of
1045-612: A state Constitutional Convention was first held in Monterey. Among the first tasks of the convention was a decision on a location for the new state capital. The first full legislative sessions were held in San Jose (1850–1851). Subsequent locations included Vallejo (1852–1853), and nearby Benicia (1853–1854); these locations eventually proved to be inadequate as well. The capital has been located in Sacramento since 1854 with only
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#17327931246671140-481: A viaduct, with connector flyover ramps crossing on two further levels. This type of interchange does not usually permit U-turns . The four-level stack creates two "inverse" dual-carriageways —the turn ramps crossing the middle section have traffic driving on the opposite side of oncoming traffic to usual (see diagram for clarity). The first stack interchange was the Four Level Interchange (renamed
1235-621: Is Sacramento . The state's diverse geography ranges from the Pacific Coast and metropolitan areas in the west to the Sierra Nevada mountains in the east, and from the redwood and Douglas fir forests in the northwest to the Mojave Desert in the southeast. Two-thirds of the nation's earthquake risk lies in California. The Central Valley , a fertile agricultural area, dominates the state's center. The large size of
1330-584: Is a six-level stack on the Yan'an East Road Interchange ( Chinese : 延安东路立交 ) in Puxi, Shanghai, with no dedicated HOV/bus/truck lanes. It is six-level stack because it is formed by two elevated highways, Nanbei Elevated Road and Yan'an Elevated Road with service roads and a footbridge underneath. The centrally located interchange has a central pillar known as the Nine-Dragon Pillar ( 九龙柱 ). The story
1425-624: Is also the only true four-level stack in Canada. Highway 407's other proposed four-level stacks at Highway 410 and Highway 404 were reduced to three-level cloverstack interchanges , with loop ramps being built instead of a fourth level of semi-directional ramps. Similarly, the interchange with Highway 427 has four levels but only two semi-directional flyover ramps that cross each other connecting to Highway 427 south of that junction. Two loop ramps link Highway 407 with Highway 427 north of that junction. In Belgium, on
1520-514: Is not located near a body of water, most of the city's exports travel through the Port of Durban . The N2 connects Cape Town with Durban and serves the South African cities of Port Elizabeth , East London and George and the towns of Grahamstown , Port Shepstone , Richards Bay and the iSimangaliso Wetland Park . Two busy roads intersect at the junction. A four-level stack interchange
1615-570: Is that after several construction accidents, a monk suggested the nine-dragon be welcomed with a bas relief sculpture depicting the dragon. An unusual six-level stack is located at the junction between Interstate 35E and I-635 in Dallas, Texas , and does not contain any service or frontage roads. The interchange features two levels of highway with the top three levels consisting of direct connection ramps and HOV connectors. A single ramp leading from I-635 westbound to I-35E southbound weaves underneath
1710-526: Is the home of Hollywood , the oldest and one of the largest film industries in the world, profoundly influencing global entertainment. The San Francisco Bay and the Greater Los Angeles areas are seen as the centers of the global technology and U.S. film industries, respectively. The Spaniards gave the name Las Californias to the peninsula of Baja California (in modern-day Mexico). As Spanish explorers and settlers moved north and inland,
1805-504: The Battle of Providencia near Los Angeles, he convinced each side that they had no reason to be fighting each other. As a result of Marsh's actions, they abandoned the fight, Micheltorena was defeated, and California-born Pio Pico was returned to the governorship. This paved the way to California's ultimate acquisition by the United States. In 1846, a group of American settlers in and around Sonoma rebelled against Mexican rule during
1900-652: The Bear Flag Revolt . Afterward, rebels raised the Bear Flag (featuring a bear, a star, a red stripe and the words "California Republic") at Sonoma. The Republic's only president was William B. Ide , who played a pivotal role during the Bear Flag Revolt. This revolt by American settlers served as a prelude to the later American military invasion of California and was closely coordinated with nearby American military commanders. The California Republic
1995-746: The Brussels Ring there are two four-level stack interchanges: The Grand-Bigard and Machelen interchange (only partly in use). In Germany, there is one, the Wetzlarer Kreuz . In Greece, there is also one four stack interchange near Metamorfosi , which connects the A1 and A6 (Attiki Odos) motorways. In the Netherlands there is currently one four-level stack interchange: the Prins Clausplein near The Hague . It forms
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#17327931246672090-715: The California Master Plan for Higher Education in 1960 to develop an efficient system of public education. Meanwhile, attracted to the mild Mediterranean climate, cheap land, and the state's variety of geography, filmmakers established the studio system in Hollywood in the 1920s. California manufactured 9% of US armaments produced during World War II , ranking third behind New York and Michigan . California easily ranked first in production of military ships at drydock facilities in San Diego, Los Angeles, and
2185-566: The Graham Affair , which was resolved in part with the intercession of Royal Navy officials. One of the largest ranchers in California was John Marsh . After failing to obtain justice against squatters on his land from the Mexican courts, he determined that California should become part of the United States. Marsh conducted a letter-writing campaign espousing the California climate, the soil, and other reasons to settle there, as well as
2280-553: The Indigenous people of California had not yet developed a natural immunity. Under its new American administration, California's first governor Peter Hardeman Burnett instituted policies that have been described as a state-sanctioned policy of elimination of California's indigenous people. Burnett announced in 1851 in his Second Annual Message to the Legislature: "That a war of extermination will continue to be waged between
2375-616: The Presidio of San Diego , the first religious and military settlements founded by the Spanish in California. By the end of the expedition in 1770, they would establish the Presidio of Monterey and Mission San Carlos Borromeo de Carmelo on Monterey Bay. After the Portolà expedition, Spanish missionaries led by Father-President Serra set out to establish 21 Spanish missions of California along El Camino Real ("The Royal Road") and along
2470-774: The Route 66 . From 1900 to 1965, the population grew from fewer than one million to the greatest in the Union. In 1940, the Census Bureau reported California's population as 6% Hispanic, 2.4% Asian, and 90% non-Hispanic white. To meet the population's needs, engineering feats like the California and Los Angeles Aqueducts ; the Oroville and Shasta Dams ; and the Bay and Golden Gate Bridges were built. The state government adopted
2565-527: The Treaty of Guadalupe Hidalgo (February 2, 1848) that ended the war, the westernmost portion of the annexed Mexican territory of Alta California soon became the American state of California, and the remainder of the old territory was then subdivided into the new American Territories of Arizona, Nevada, Colorado and Utah . The even more lightly populated and arid lower region of old Baja California remained as
2660-521: The Valley of the Sun to include design icons on the support columns in addition to the retaining walls. There are no HOV connections at this time, although they are planned in the future. The name SuperRedTan is a portmanteau of the names of three area freeways that intersect at this point. The name borrows the bolded portions of the following to form the word SuperRedTan. In order to successfully create
2755-673: The coast of California were the members of a Spanish maritime expedition led by Portuguese captain Juan Rodríguez Cabrillo in 1542. Cabrillo was commissioned by Antonio de Mendoza , the Viceroy of New Spain , to lead an expedition up the Pacific coast in search of trade opportunities; they entered San Diego Bay on September 28, 1542, and reached at least as far north as San Miguel Island . Privateer and explorer Francis Drake explored and claimed an undefined portion of
2850-544: The 16th and 17th centuries led to the colonization by the Spanish Empire . The area became a part of Mexico in 1821, following its successful war for independence , but was ceded to the United States in 1848 after the Mexican–American War . The California gold rush started in 1848 and led to social and demographic changes, including depopulation of Indigenous tribes. The western portion of Alta California
2945-513: The 18th century. The Portolá expedition of 1769–70 was a pivotal event in the Spanish colonization of California, resulting in the establishment of numerous missions, presidios , and pueblos . The military and civil contingent of the expedition was led by Gaspar de Portolá , who traveled over land from Sonora into California, while the religious component was headed by Junípero Serra , who came by sea from Baja California . In 1769, Portolá and Serra established Mission San Diego de Alcalá and
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3040-491: The 1992 Rodney King riots. California was the hub of the Black Panther Party , known for arming African Americans to defend against racial injustice. Mexican, Filipino, and other migrant farm workers rallied in the state around Cesar Chavez for better pay in the 1960s and 70s. During the 20th century, two great disasters happened: the 1906 San Francisco earthquake and 1928 St. Francis Dam flood remain
3135-403: The 21st century, droughts and frequent wildfires attributed to climate change have occurred. From 2011 to 2017, a persistent drought was the worst in its recorded history. The 2018 wildfire season was the state's deadliest and most destructive. One of the first confirmed COVID-19 cases in the United States occurred in California on January 26, 2020. A state of emergency was declared in
3230-784: The Bill Keene Memorial Interchange), built in Los Angeles , California, and completed in 1949, at the junction of US Route 101 (US 101) and State Route 110 (SR 110). Since then, the California Department of Transportation (Caltrans) has built eight more four-level stacks throughout the state of California , notably the Judge Harry Pregerson Interchange , as well as a larger number of three-level and four-level stack– cloverleaf hybrids (where
3325-522: The California coast in 1579, landing north of the future city of San Francisco . The first Asians to set foot on what would be the United States occurred in 1587, when Filipino sailors arrived in Spanish ships at Morro Bay . Coincidentally the descendants of the Muslim Caliph Hasan ibn Ali in formerly Islamic Manila and had converted, then mixed Christianity with Islam, upon Spanish conquest, transited through California (Named after
3420-526: The California coast, 16 sites of which having been chosen during the Portolá expedition. Numerous major cities in California grew out of missions, including San Francisco ( Mission San Francisco de Asís ), San Diego ( Mission San Diego de Alcalá ), Ventura ( Mission San Buenaventura ), or Santa Barbara ( Mission Santa Barbara ), among others. Juan Bautista de Anza led a similarly important expedition throughout California in 1775–76, which would extend deeper into
3515-534: The California government in 2022. These groups were also diverse in their political organization, with bands, tribes, villages, and, on the resource-rich coasts, large chiefdoms , such as the Chumash , Pomo and Salinan . Trade, intermarriage, craft specialists, and military alliances fostered social and economic relationships between many groups. Although nations would sometimes war, most armed conflicts were between groups of men for vengeance . Acquiring territory
3610-443: The California state government paid around 1.5 million dollars (some 250,000 of which was reimbursed by the federal government) to hire militias with the stated purpose of protecting settlers, however these militias perpetrated numerous massacres of indigenous people. Indigenous people were also forcibly moved to reservations and rancherias, which were often small and isolated and without enough natural resources or funding from
3705-643: The I-635 eastbound bridge, making the interchange six levels. The interchange between I-35E and the Sam Rayburn Tollway in Lewisville, Texas , although similar in design to five-level stacks elsewhere in Texas, also qualifies as a six-level stack, since the ramp connecting the eastbound Sam Rayburn Tollway with northbound I-35E goes over the fifth-level ramps connecting I-35E in both directions with
3800-530: The Nanjing's Yingtian Street Elevated has one each where it intersects the Inner Ring Road twice. Sometimes a fifth level is added for HOV connectors. An example of this exists in Los Angeles, California , at the Judge Harry Pregerson Interchange . The connector from HOV southbound 110 to HOV westbound 105 can be at the same level as the connector from mixed eastbound 105 to mixed northbound 110, but
3895-642: The Sam Rayburn Tollway. The ramp connecting the westbound Sam Rayburn Tollway with southbound I-35E is on the fourth level of the interchange, going under the fifth-level ramps connecting both directions of I-35E with the Sam Rayburn Tollway. California California is a state in the Western United States , lying on the American Pacific Coast . It borders Oregon to the north, Nevada and Arizona to
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3990-624: The San Francisco Bay Area. Due to the hiring opportunities California offered during the conflict, the population multiplied from the immigration it received due to the work in its war factories, military bases, and training facilities. After World War II, California's economy expanded due to strong aerospace and defense industries, whose size decreased following the end of the Cold War . Stanford University began encouraging faculty and graduates to stay instead of leaving
4085-504: The SuperRedTan Interchange, twelve bridges were built for a combined bridge deck area of 321,000 square feet (29,800 m). All of the bridges were built using cast-in-place concrete, with post-tensioned box girders . There was 60,511 feet (18,444 m) of mechanically stabilized earth walls with some segments reaching up to 53 feet (16 m) tall. 162,040 feet (49,390 m) of soundwalls were also built within
4180-497: The U.S. Army. In the 20th century, thousands of Japanese people migrated to California. The state in 1913 passed the Alien Land Act , excluding Asian immigrants from owning land. During World War II, Japanese Americans in California were interned in concentration camps; in 2020, California apologized. Migration to California accelerated during the early 20th century with the completion of transcontinental highways like
4275-454: The Union . However, due to the existence of a large contingent of pro-South sympathizers within the state, the state was not able to muster any full military regiments to send eastwards to officially serve in the Union war effort. Still, several smaller military units within the Union army, such as the "California 100 Company" , were unofficially associated with the state of California due to a majority of their members being from California. At
4370-508: The beltway's northwest quadrant. The newly reconstructed interchange of I-610 and I-69, with the new I‑610 northbound feeder road built underground and the new I-610 southbound feeder road overpass, is also a five-level stack interchange. Though not a Texas-style stack in the above sense, an unusual stack is nonetheless found in Houston that features more than four levels of traffic but whose fifth level exists in only one direction. In 2011,
4465-454: The best land in the state, were secularized by 1834 and became the property of the Mexican government. The governor granted many square leagues of land to others with political influence. These huge ranchos or cattle ranches emerged as the dominant institutions of Mexican California. The ranchos developed under ownership by Californios (Hispanics native of California) who traded cowhides and tallow with Boston merchants. Beef did not become
4560-464: The best route to follow, which became known as "Marsh's route". His letters were read, reread, passed around, and printed in newspapers throughout the country, and started the first wagon trains rolling to California. After ushering in the period of organized emigration to California, Marsh became involved in a military battle between the much-hated Mexican general, Manuel Micheltorena and the California governor he had replaced, Juan Bautista Alvarado. At
4655-454: The city of Hartford . Most of the I‑291 beltway was later cancelled, and the sprawling stack lay dormant for almost 25 years. In 1992 the extension of Connecticut Route 9 to I-84 used the I‑291 right-of-way and some sections of the abandoned interchange. Several ramps still remain unused, including abandoned roadbed for I-291 both north and south of the complex. Four-level stacks are used for
4750-662: The connector from HOV southbound 110 to HOV eastbound 105 needs to be higher level, since it crosses over the former connector. Another case is where connection to nearby arterials suggests that another level may be useful, thus making the interchange more complicated but easier to use. In the Atlanta area, a side ramp forms the fifth level of the Tom Moreland Interchange , colloquially known as Spaghetti Junction , found in DeKalb County, Georgia . There
4845-551: The conquest include the Battle of San Pasqual and the Battle of Dominguez Rancho in Southern California, as well as the Battle of Olómpali and the Battle of Santa Clara in Northern California. After a series of defensive battles in the south, the Treaty of Cahuenga was signed by the Californios on January 13, 1847, securing a censure and establishing de facto American control in California. Following
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#17327931246674940-535: The deadliest in U.S. history. Although air pollution has been reduced, health problems associated with pollution continue. Brown haze known as " smog " has been substantially abated after federal and state restrictions on automobile exhaust. An energy crisis in 2001 led to rolling blackouts , soaring power rates, and the importation of electricity from neighboring states. Southern California Edison and Pacific Gas and Electric Company came under heavy criticism. Housing prices in urban areas continued to increase;
5035-618: The east, and shares an international border with the Mexican state of Baja California to the south. With nearly 39 million residents across an area of 163,696 square miles (423,970 km ), it is the most populous U.S. state, the third-largest by area, and most populated subnational entity in North America . Prior to European colonization , California was one of the most culturally and linguistically diverse areas in pre-Columbian North America . European exploration in
5130-562: The eastern end of C-470 and the southern end of E-470 . In Thornton, Colorado , there is another stack serving I-25 and E-470 at its northern end as it continues west as the Northwest Parkway . The initial design of Highway 407 had several four-level stack interchanges planned at junctions with existing 400-series highways , but only one example was built: the interchange at Highway 400 in Vaughan, Ontario , which
5225-626: The government to adequately sustain the populations living on them. As a result, settler colonialism was a calamity for indigenous people. Several scholars and Native American activists, including Benjamin Madley and Ed Castillo , have described the actions of the California government as a genocide , as well as the 40th governor of California Gavin Newsom . Benjamin Madley estimates that from 1846 to 1873, between 9,492 and 16,092 indigenous people were killed, including between 1,680 and 3,741 killed by
5320-459: The highest output of any U.S. state, and is led by its dairy , almonds , and grapes . With the busiest port in the country ( Los Angeles ), California plays a pivotal role in the global supply chain, hauling in about 40% of goods imported to the US. Notable contributions to popular culture , ranging from entertainment , sports , music , and fashion , have their origins in California. California
5415-430: The highest vehicle capacity, and vehicles travel shorter distances when compared to different types of interchanges. The first directional interchange built in the world was the Four Level Interchange which opened to Los Angeles traffic in 1949. A directional interchange is a grade separated junction between two roads where all turns that require crossing over or under the opposite road's lanes of travel to complete
5510-410: The indigenous peoples developed complex forms of ecosystem management, including forest gardening to ensure the regular availability of food and medicinal plants . This was a form of sustainable agriculture . To mitigate destructive large wildfires from ravaging the natural environment, indigenous peoples developed a practice of controlled burning . This practice was recognized for its benefits by
5605-568: The interchange the fifth level, as US 90 to I-10 westbound merges onto I-10 before crossing I-610. (None of the frontage roads for these highways cross the interchange itself, and thus do not factor into the complexity of the stack.) More than 40 bridges make up the five-level stack interchange known as the Big ;I between I-40 and I-25 in Albuquerque, New Mexico . China is also home to many Texas-style stack interchanges. For example
5700-409: The interchanges between: Another well-known stack interchange lies west of Baltimore, Maryland , serving as the junction between I-695 and I-70 . It was originally built for a planned extension of I‑70 into the city. Due to strong opposition, I‑70 ends at a park and ride three miles (4.8 km) east. As a result, the road east of I‑695 sees little traffic compared to the high volumes to and from
5795-439: The interior and north of California. The Anza expedition selected numerous sites for missions, presidios, and pueblos, which subsequently would be established by settlers. Gabriel Moraga , a member of the expedition, would also christen many of California's prominent rivers with their names in 1775–1776, such as the Sacramento River and the San Joaquin River . After the expedition, Gabriel's son, José Joaquín Moraga , would found
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#17327931246675890-430: The junction of the A4 and A12. In the United Kingdom there are three four-level stacks: at the junction of the M4 and M25 near Heathrow Airport in London (the Thorney Interchange ), at the junction of the M23 and M25 to the south of London (the Merstham Interchange), and at the junction of the M4 and M5 near Bristol (the Almondsbury Interchange ). The M4/M25 junction is particularly unusual as it also has
5985-469: The largest dam removal and river restoration project in US history was announced for the Klamath River , as a win for California tribes. Covering an area of 163,696 sq mi (423,970 km ), California is the third-largest state in the United States in area, after Alaska and Texas . California is one of the most geographically diverse states in the union and is often geographically bisected into two regions, Southern California , comprising
6080-492: The least-used left-turning ramp is built as a cloverleaf-like 270-degree loop). The stack interchange between I-10 and I-405 is a three-level stack, since the semi-directional ramps are spaced out far enough so they do not need to cross each other at a single point as in a conventional four-level stack. The first four-level stack interchange in Texas was built in Fort Worth at the intersection of I-35W and I-30 (originally I-20) near downtown. This interchange, finished in 1958,
6175-414: The middle of the state lies the California Central Valley , bounded by the Sierra Nevada in the east, the coastal mountain ranges in the west, the Cascade Range to the north and by the Tehachapi Mountains in the south. The Central Valley is California's productive agricultural heartland. Divided in two by the Sacramento-San Joaquin River Delta , the northern portion, the Sacramento Valley serves as
6270-414: The population of San Francisco increased from 500 to 150,000. The seat of government for California under Spanish and later Mexican rule had been located in Monterey from 1777 until 1845. Pio Pico, the last Mexican governor of Alta California, had briefly moved the capital to Los Angeles in 1845. The United States consulate had also been located in Monterey, under consul Thomas O. Larkin . In 1849,
6365-404: The previously four-level stack interchange between I-610 and I-10 on the city's east side gained a new (though long-planned) level of complexity with the opening of four ramps connecting the new US 90 (Crosby Freeway) to the east, featuring direct movements for the new freeway to and from the southeast quadrant of I-610, to westbound I-10, and from eastbound I-10. It is the latter ramp which gives
6460-433: The project area to minimize the amount of decibels that the interchange was projected to generate the surrounding communities. The SuperRedTan Interchange project also consisted of widening the Superstition Freeway between Power and Crismon Roads, and constructing Loop 202 from scratch from the interchange north to University Drive. Phased construction lasted four years, from 2003 to 2007, and cost $ 116 million USD . It
6555-535: The pueblo of San Jose in 1777, making it the first civilian-established city in California. During this same period, sailors from the Russian Empire explored along the northern coast of California. In 1812, the Russian-American Company established a trading post and small fortification at Fort Ross on the North Coast . Fort Ross was primarily used to supply Russia's Alaskan colonies with food supplies. The settlement did not meet much success, failing to attract settlers or establish long term trade viability, and
6650-416: The races until the Indian race becomes extinct must be expected. While we cannot anticipate the result with but painful regret, the inevitable destiny of the race is beyond the power and wisdom of man to avert." As in other American states, indigenous peoples were forcibly removed from their lands by American settlers , like miners, ranchers, and farmers. Although California had entered the American union as
6745-403: The region known as California , or Las Californias , grew. Eventually it included lands north of the peninsula, Alta California , part of which became the present-day U.S. state of California. A 2017 state legislative document states, "Numerous theories exist as to the origin and meaning of the word 'California, ' " and that all anyone knows is the name was added to a map by 1541 "presumably by
6840-654: The state as part of the Gold Rush or to seek work. Even though the Chinese proved indispensable in building the transcontinental railroad from California to Utah, perceived job competition with the Chinese led to anti-Chinese riots in the state, and eventually the US ended migration from China partially as a response to pressure from California with the 1882 Chinese Exclusion Act . Under earlier Spanish and Mexican rule, California's original native population had precipitously declined, above all, from Eurasian diseases to which
6935-521: The state on March 4, 2020, and remained in effect until Governor Gavin Newsom ended it in February 2023. A mandatory statewide stay-at-home order was issued on March 19, 2020, which was ended in January 2021. Cultural and language revitalization efforts among indigenous Californians have progressed among tribes as of 2022. Some land returns to indigenous stewardship have occurred. In 2022,
7030-430: The state results in climates that vary from moist temperate rainforest in the north to arid desert in the interior, as well as snowy alpine in the mountains . Droughts and wildfires are an ongoing issue. California's economy is the largest of any U.S. state, with a $ 4.0 trillion gross state product as of 2024 . It is the largest sub-national economy in the world. California's agricultural industry has
7125-515: The state's demographics and its finances. Soon afterward, a massive influx of immigration into the area resulted, as prospectors and miners arrived by the thousands. The population burgeoned with United States citizens, Europeans, Middle Easterns, Chinese and other immigrants during the great California gold rush . By the time of California's application for statehood in 1850, the settler population of California had multiplied to 100,000. By 1854, more than 300,000 settlers had come. Between 1847 and 1870,
7220-522: The state's name include CA, Cal., Calif., Califas , and US-CA . California was one of the most culturally and linguistically diverse areas in pre-Columbian North America . Historians generally agree that there were at least 300,000 people living in California prior to European colonization. The Indigenous peoples of California included more than 70 distinct ethnic groups , inhabiting environments ranging from mountains and deserts to islands and redwood forests. Living in these diverse geographic areas,
7315-620: The state, and develop a high-tech region, now known as Silicon Valley . As a result of this, California is a world center of the entertainment and music industries, of technology, engineering, and the aerospace industry, and as the US center of agricultural production. Just before the Dot Com Bust , California had the fifth-largest economy in the world. In the mid and late twentieth century, race-related incidents occurred. Tensions between police and African Americans, combined with unemployment and poverty in inner cities, led to riots, such as
7410-741: The tallest interchange in the world. Others can be found at the interchanges between State Highway 121 (SH 121) and the Dallas North Tollway , SH 121 and I-35E / US 77 , I-30 and I-35W , I-30 and President George Bush Turnpike and others which are technically five levels but do not fit under a Texas-style stack configuration (i.e. the extra level being located away from the central stack or existing in only one direction). The Houston area has seven five-level stack interchanges along Beltway 8 : at I-10 east and west of downtown, I-69 northeast and southwest of downtown, I-45 north and south of downtown, and US 290 in
7505-511: The ten southernmost counties, and Northern California , comprising the 48 northernmost counties. It is bordered by Oregon to the north, Nevada to the east and northeast, Arizona to the southeast, the Pacific Ocean to the west and shares an international border with the Mexican state of Baja California to the south (with which it makes up part of The Californias region of North America , alongside Baja California Sur ). In
7600-407: The time of California's admission into the Union, travel between California and the rest of the continental United States had been a time-consuming and dangerous feat. Nineteen years later, and seven years after it was greenlighted by President Lincoln, the first transcontinental railroad was completed in 1869. California was then reachable from the eastern States in a week's time. Much of the state
7695-570: The transition from Spanish colonial rule to independent Mexican rule. In 1821, the Mexican War of Independence gave the Mexican Empire (which included California) independence from Spain. For the next 25 years, Alta California remained a remote, sparsely populated, northwestern administrative district of the newly independent country of Mexico, which shortly after independence became a republic. The missions , which controlled most of
7790-401: The turn utilize ramps that make a direct or semi-direct connection. The difference between direct and semi-direct connections is how much the motorist deviates from the intended direction of travel while on the ramp. Direct ramps are shorter and can handle higher traveling speeds than semi-direct. The four-level stack (or simply four-stack ) has one major freeway crossing another freeway with
7885-455: The upgraded interchange opened in October 2018. A four-level stack interchange was chosen to serve the increasing volumes of traffic in the uMhlanga/Mount Edgecombe area. In Texas , many stacks contain five levels. They usually have the same configuration as four-level stacks, but frontage roads add a fifth level. The frontage roads usually intersect with traffic lights and are similar to
7980-458: The west. Another four-level stack interchange in the Baltimore area is located at the northeastern junction between I-695 and I-95 . The stack was built as part of a massive I-95 reconstruction project that includes high-occupancy toll lanes (HOT lanes), designed to relieve congestion between Baltimore and its northeastern suburbs. The Springfield Interchange , south of Washington, D.C. ,
8075-668: The westbound A66. The Light Horse Interchange at the junction of the M4 and M7 is a four-level stack interchange in Sydney , New South Wales, Australia. Opened in late 2005, it is the largest in the Southern Hemisphere. The EB Cloete Interchange just outside Durban, South Africa , is another four-level stack interchange. The N3 is the busiest highway in South Africa and a very busy truck route. Because Johannesburg
8170-544: Was abandoned by 1841. During the War of Mexican Independence , Alta California was largely unaffected and uninvolved in the revolution, though many Californios supported independence from Spain , which many believed had neglected California and limited its development. Spain's trade monopoly on California had limited local trade prospects. Following Mexican independence, California ports were freely able to trade with foreign merchants. Governor Pablo Vicente de Solá presided over
8265-504: Was chosen to serve the high volumes of traffic. The Mount Edgecombe Interchange is another four-level stack interchange just outside Durban, South Africa , and is the intersection between the N2 (to Durban and KwaDukuza ) and the M41 (to Mount Edgecombe and uMhlanga ). The interchange which was previously a simple diamond interchange was upgraded to a four-level/four-stack interchange, with
8360-552: Was extremely well suited to fruit cultivation and agriculture in general. Vast expanses of wheat, other cereal crops, vegetable crops, cotton, and nut and fruit trees were grown (including oranges in Southern California), and the foundation was laid for the state's prodigious agricultural production in the Central Valley and elsewhere. In the nineteenth century, a large number of migrants from China traveled to
8455-413: Was funded through Proposition 300, which was passed in 1985 by Maricopa County voters. Stack interchange A directional interchange , colloquially known as a stack interchange , is a type of grade-separated junction between two controlled-access highways that allows for free-flowing movement to and from all directions of traffic. These interchanges eliminate the problems of weaving , have
8550-607: Was highly unstable, and in a reflection of this, from 1831 onwards, California also experienced a series of armed disputes, both internal and with the central Mexican government. During this tumultuous political period Juan Bautista Alvarado was able to secure the governorship during 1836–1842. The military action which first brought Alvarado to power had momentarily declared California to be an independent state, and had been aided by Anglo-American residents of California, including Isaac Graham . In 1840, one hundred of those residents who did not have passports were arrested, leading to
8645-494: Was known as "The Pretzel" or the "Mixmaster" by locals. The original contract cost was $ 1,220,000. Improvements to the old Mixmaster over the past 60 years include an upgrade to a Texas-style five-level stack exchange (see below). One of the first four-level stack interchanges in the northeastern United States was constructed in the late 1960s over I-84 in Farmington, Connecticut , for the controversial I-291 beltway around
8740-714: Was not usually the purpose of these small-scale battles. Men and women generally had different roles in society. Women were often responsible for weaving, harvesting, processing, and preparing food, while men for hunting and other forms of physical labor. Most societies also had roles for people whom the Spanish referred to as joyas , who they saw as "men who dressed as women". Joyas were responsible for death , burial , and mourning rituals , and they performed women's social roles. Indigenous societies had terms such as two-spirit to refer to them. The Chumash referred to them as 'aqi. The early Spanish settlers detested and sought to eliminate them. The first Europeans to explore
8835-584: Was rebuilt into a four-level stack to accommodate I-95 's transition from the Capital Beltway to its own alignment further south into Virginia. This was necessitated by the inadequacy of the original configuration that was caused by the rerouting of I-95 onto the Beltway after its cancellation within Washington and points north. In Lone Tree, Colorado , there is a four-level stack serving I-25 ,
8930-502: Was short-lived; the same year marked the outbreak of the Mexican–American War (1846–1848). Commodore John D. Sloat of the United States Navy sailed into Monterey Bay in 1846 and began the U.S. military invasion of California , with Northern California capitulating in less than a month to the United States forces. In Southern California, Californios continued to resist American forces. Notable military engagements of
9025-399: Was then organized and admitted as the 31st state in 1850 , as a free state , following the Compromise of 1850 . The Greater Los Angeles and San Francisco Bay areas are the nation's second- and fifth-most populous urban regions , with 19 million and 10 million residents respectively. Los Angeles is the state's most populous city and the nation's second-most ; California's capital
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