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Cypress Street Viaduct
The Cypress Street Viaduct, often referred to as the Cypress Structure or the Cypress Freeway, was a 1.6-mile-long (2.5 km), raised two-deck, multi-lane (four lanes per tier) freeway constructed of reinforced concrete that was originally part of the Nimitz Freeway ( State Route 17, and later, Interstate 880) in Oakland, California. It replaced an earlier single-deck viaduct constructed in the 1930s as one of the approaches to the San Francisco–Oakland Bay Bridge. It was located along Cypress Street between 7th Street and Interstate 80 in the West Oakland neighborhood. It officially opened to traffic on June 11, 1957, and was in use until October 17, 1989. At approximately 5:04 p.m. that day, a magnitude 6.9 earthquake struck the Bay Area, resulting in a large portion of the freeway's upper deck collapsing onto the lower deck. The collapse killed 42 people and resulted in the subsequent demolition of the structure. The Cypress Freeway Memorial Park is located in Oa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nimitz Freeway
Nimitz may refer to: People * Chester W. Nimitz (1885–1966), fleet admiral of the United States Navy * Chester Nimitz Jr. (1915–2002), an American officer and submarine commander * Jack Nimitz (1930–2009), American musician Named for Fleet Admiral Nimitz * USS Nimitz, USS ''Nimitz'' (CVN-68), a U.S. Navy supercarrier ** Nimitz-class aircraft carrier, ''Nimitz''-class aircraft carrier, a class of ten nuclear-powered aircraft carriers ** USS Nimitz UFO incident, USS ''Nimitz'' UFO incident, a 2004 unexplained aerial phenomenon * Nimitz High School (Harris County, Texas), Houston, Texas * Nimitz High School (Irving, Texas) * Nimitz Elementary School, Sunnyvale, California * Nimitz Freeway, a designation of Interstate 880 in the San Francisco Bay Area * Nimitz Highway, a local name for Hawaii Route 92, a major east–west highway on the island of Oahu * Nimitz, West Virginia * Nimitz Glacier, an Antarctic glacier * Nimitz Strike Group, a deployment of the U.S. Navy's Carrier ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ground Motion
Ground motion is the movement of the earth's surface from earthquakes or explosions. Ground motion is produced by seismic waves that are generated by sudden slip on a fault or sudden pressure at the explosive source and travel through the earth and along its surface. This can be due to natural events, such as earthquakes and volcanic eruptions, or human activities, such as the detonation of nuclear weapons. There are two main types of seismic waves: body waves and surface waves. Body waves travel through the interior of the earth, while surface waves travel along the earth's surface. Ground motion is typically caused by surface waves, which are the most destructive type of seismic waves. Ground motion is measured using a seismometer, a device that detects and records the movement of the earth's surface. Seismometers are used by seismologists to study earthquakes and other types of ground motion. The recordings produced by a seismometer are known as seismograms, and they can be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oakland Army Base
The Oakland Army Base, also known as the Oakland Army Terminal, is a decommissioned United States Army base in the San Francisco Bay Area of California. The base was located at the Port of Oakland on Maritime Street just south of the eastern entrance to the San Francisco–Oakland Bay Bridge. Construction of the base commenced in 1941 as a part of the expanding San Francisco Port of Embarkation which was headquartered at Fort Mason on the San Francisco waterfront. Initially named the ''Oakland Sub-Port of the San Francisco Port of Embarkation'', the base was renamed the Oakland Army Base in 1944. The installation moved in excess of 8.5 million tons of cargo during World War II, and 7.2 million tons of cargo passed through the terminal during the Korean War. In 1946, the Oakland Army Base expanded to incorporate the administrative and cantonment area of the Port formerly known as Camp John T. Knight in honor of World War I Brigadier General John Thornton Knight. In 1955 the ''San ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Postal Service
The United States Postal Service (USPS), also known as the Post Office, U.S. Mail, or Postal Service, is an independent agency of the executive branch of the United States federal government responsible for providing postal service in the U.S., including its insular areas and associated states. It is one of the few government agencies explicitly authorized by the U.S. Constitution. The USPS, as of 2021, has 516,636 career employees and 136,531 non-career employees. The USPS traces its roots to 1775 during the Second Continental Congress, when Benjamin Franklin was appointed the first postmaster general; he also served a similar position for the colonies of the Kingdom of Great Britain. The Post Office Department was created in 1792 with the passage of the Postal Service Act. It was elevated to a cabinet-level department in 1872, and was transformed by the Postal Reorganization Act of 1970 into the U.S. Postal Service as an independent agency. Since the early 1980s, many di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emeryville (Amtrak Station)
Emeryville station is an Amtrak station in Emeryville, California, United States. The station is served by the ''California Zephyr'', ''Capitol Corridor'', ''Coast Starlight'', and ''San Joaquins''. The station is the primary connection point for Amtrak Thruway buses serving San Francisco. Emeryville station has one side platform and one island platform serving the eastern two tracks of the Union Pacific Railroad Martinez Subdivision. The other three tracks are only used by freight trains. A pedestrian bridge connects the side platform and station building with commercial areas on Shellmound Street to the west. History Southern Pacific Railroad Central Pacific Railroad completed the Berkeley Branch Railroad in 1876, followed by the mainline toward Richmond and beyond in 1878. Stations were located on the mainline at Emerys (Park Avenue), Shellmound, and Montague Street (now 59th Street), plus at San Pablo Avenue on the branch line. By the time the lines were under Southern P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oakland – Jack London Square (Amtrak Station)
Oakland is the largest city and the county seat of Alameda County, California, United States. A major West Coast port, Oakland is the largest city in the East Bay region of the San Francisco Bay Area, the third largest city overall in the Bay Area and the eighth most populated city in California. With a population of 440,646 in 2020, it serves as the Bay Area's trade center and economic engine: the Port of Oakland is the busiest port in Northern California, and the fifth busiest in the United States of America. An act to incorporate the city was passed on May 4, 1852, and incorporation was later approved on March 25, 1854. Oakland is a charter city. Oakland's territory covers what was once a mosaic of California coastal terrace prairie, oak woodland, and north coastal scrub. In the late 18th century, it became part of a large ''rancho'' grant in the colony of New Spain. Its land served as a resource when its hillside oak and redwood timber were logged to build San Francisc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
16th Street Station, Oakland, California
16th Street station (Oakland Central) is a former Southern Pacific Railroad station in the Prescott neighborhood of Oakland, California, United States. The Beaux-Arts building was designed by architect Jarvis Hunt, a preeminent railroad station architect, and opened in 1912. The station has not been served by trains since 1994. History Southern Pacific The original 16th Street depot was a smaller wood structure, built when the tracks were on the shoreline of San Francisco Bay. Later the shoreline was filled and now lies nearly a mile west. It was replaced in 1912 by a Beaux-Arts building designed by architect Jarvis Hunt. For decades the 16th Street station was the main Oakland station for Southern Pacific (SP) through trains, almost entirely replacing the 7th Street station. It was a companion (or "city station") for Oakland Pier, two miles away, where passengers could board ferries to San Francisco. (After 1958, the ferries were replaced by buses from 16th Street station ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amtrak
The National Railroad Passenger Corporation, doing business as Amtrak () , is the national passenger railroad company of the United States. It operates inter-city rail service in 46 of the 48 contiguous U.S. States and nine cities in Canada. ''Amtrak'' is a portmanteau of the words ''America'' and ''trak'', the latter itself a sensational spelling of ''track''. Founded in 1971 as a quasi-public corporation to operate many U.S. passenger rail routes, Amtrak receives a combination of state and federal subsidies but is managed as a for-profit organization. The United States federal government, through the Secretary of Transportation, owns all the company's issued and outstanding preferred stock. Amtrak's headquarters is located one block west of Union Station in Washington, D.C. Amtrak serves more than 500 destinations in 46 states and three Canadian provinces, operating more than 300 trains daily over of track. Amtrak owns approximately of this track and operates an addit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern Pacific Railroad
The Southern Pacific (or Espee from the railroad initials- SP) was an American Class I railroad network that existed from 1865 to 1996 and operated largely in the Western United States. The system was operated by various companies under the names Southern Pacific Railroad, Southern Pacific Company and Southern Pacific Transportation Company. The original Southern Pacific began in 1865 as a land holding company. The last incarnation of the Southern Pacific, the Southern Pacific Transportation Company, was founded in 1969 and assumed control of the Southern Pacific system. The Southern Pacific Transportation Company was acquired in 1996 by the Union Pacific Corporation and merged with their Union Pacific Railroad. The Southern Pacific legacy founded hospitals in San Francisco, Tucson, and Houston. In the 1970s, it also founded a telecommunications network with a state-of-the-art microwave and fiber optic backbone. This telecommunications network became part of Sprint, a comp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eastern Span Replacement Of The San Francisco–Oakland Bay Bridge
The eastern span replacement of the San Francisco–Oakland Bay Bridge was a construction project to replace a seismically unsound portion of the Bay Bridge with a new self-anchored suspension bridge (SAS) and a pair of viaducts. The bridge is in the U.S. state of California and crosses the San Francisco Bay between Yerba Buena Island and Oakland. The span replacement took place between 2002 and 2013, and is the most expensive public works project in California history, with a final price tag of $6.5 billion, a 2,500% cost overrun from the original estimate of $250 million. Originally scheduled to open in 2007, several problems delayed the opening until September 2, 2013. With a width of , comprising 10 general-purpose lanes, it is the world's widest bridge according to Guinness World Records. The Bay Bridge has two major sections: the western suspension spans and their approach structures between San Francisco and Yerba Buena Island (YBI) and the structures between ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benicia–Martinez Bridge
The Benicia–Martinez Bridge refers to three parallel bridges which cross the Carquinez Strait just west of Suisun Bay in California; the spans link Benicia, California, Benicia on the north side with Martinez, California, Martinez on the south. The original deck truss bridge opened in 1962 to replace the last Roll-on/roll-off, automotive ferry service in the San Francisco Bay Area. The 1962 bridge has seven spans and of vertical clearance, now carrying four lanes of southbound traffic, as well as a path for pedestrians and bicyclists. It was named the George Miller Jr., Memorial Bridge in 1975 after California state legislator George Miller Jr. A bridge was built alongside and opened on August 25, 2007 with five lanes of northbound traffic. In 2007, it was named the Congressman George Miller Benicia–Martinez Bridge after U.S. Congressman George Miller (California politician), George Miller, Miller Jr.'s son. The cost of the 1962 span was United States dollar, US$25 million ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Interstate 80 In California
Interstate 80 (I-80) is a transcontinental Interstate Highway in the United States, stretching from San Francisco, California, to Teaneck, New Jersey. The segment of I-80 in California runs east from San Francisco across the San Francisco–Oakland Bay Bridge to Oakland, where it turns north and crosses the Carquinez Bridge before turning back northeast through the Sacramento Valley. I-80 then traverses the Sierra Nevada, cresting at Donner Summit, before crossing into the state of Nevada within the Truckee River Canyon. The speed limit is at most along the entire route instead of the state's maximum of as most of the route is in either urban areas or mountainous terrain. I-80 has portions designated as the Eastshore Freeway and Alan S. Hart Freeway. Throughout California, I-80 was built along the corridor of US Route 40 (US 40), eventually replacing this designation entirely. The prior US 40 corridor itself was built along several historic corridors in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
