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Burnside Bridge
The Burnside Bridge is a 1926-built bascule bridge that spans the Willamette River in Portland, Oregon, United States, carrying Burnside Street. It is the second bridge at the same site to carry that name. It was added to the National Register of Historic Places in November 2012. Design The bridge was designed by Ira G. Hedrick and Robert E. Kremers, incorporating a bascule lift mechanism designed by Joseph Strauss. Including approaches, the Burnside has a total length of and a center span. While lowered this span is normally above the river. The deck is made of concrete, which contributes to its being one of the heaviest bascule bridges in the United States. The counterweights, housed inside the two piers, weigh . The lifting is normally controlled by the Hawthorne Bridge operator, but an operator staffs the west tower during high river levels. As of 2005, the bridge opened for river traffic an average of 35 times a month. The bridge provides shelter for the initially un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Willamette River
The Willamette River ( ) is a major tributary of the Columbia River, accounting for 12 to 15 percent of the Columbia's flow. The Willamette's main stem is long, lying entirely in northwestern Oregon in the United States. Flowing northward between the Oregon Coast Range and the Cascade Range, the river and its tributaries form the Willamette Valley, a basin that contains two-thirds of Oregon's population, including the state capital, Salem, and the state's largest city, Portland, which surrounds the Willamette's mouth at the Columbia. Originally created by plate tectonics about 35 million years ago and subsequently altered by volcanism and erosion, the river's drainage basin was significantly modified by the Missoula Floods at the end of the most recent ice age. Humans began living in the watershed over 10,000 years ago. There were once many tribal villages along the lower river and in the area around its mouth on the Columbia. Indigenous peoples lived throughout ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dreamland Skateparks
Dreamland or Dream Land may refer to: Arts, entertainment and media Film * ''Dreamland'' (2006 film), an American drama * ''Dreamland'' (2007 film), an American science fiction film * ''Dreamland'' (2009 film), an Icelandic documentary * ''Dreamland'' (2016 film), an American comedy-drama * ''Dreamland'' (2019 American film), an American drama thriller film with Finn Cole and Margot Robbie * ''Dreamland'' (2019 Canadian film), a Canadian fantasy film directed by Bruce McDonald * '' Dreamland: The Burning of Black Wall Street'', a 2021 American documentary film Television * Dreamland (TV series), an upcoming British comedy television series * ''Utopia'' (Australian TV series), a 2014 comedy renamed ''Dreamland'' for non-Australian audiences * ''Dreamland'' (''Doctor Who''), a 2009 animated serial based on ''Doctor Who'' * "Dreamland" (''The X-Files''), a 1998 sixth-season episode * "Dreamland", the title of season 8 of ''Archer'' Gaming * ''Kirby's Dream Land'', a 1992 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trolleybus
A trolleybus (also known as trolley bus, trolley coach, trackless trolley, trackless tramin the 1910s and 1920sJoyce, J.; King, J. S.; and Newman, A. G. (1986). ''British Trolleybus Systems'', pp. 9, 12. London: Ian Allan Publishing. .or trolleyDunbar, Charles S. (1967). ''Buses, Trolleys & Trams''. Paul Hamlyn Ltd. (UK). Republished 2004 with or 9780753709702.) is an electric bus that draws power from dual overhead wires (generally suspended from roadside posts) using spring-loaded trolley poles. Two wires, and two trolley poles, are required to complete the electrical circuit. This differs from a tram or streetcar, which normally uses the track as the return path, needing only one wire and one pole (or pantograph). They are also distinct from other kinds of electric buses, which usually rely on batteries. Power is most commonly supplied as 600-volt direct current, but there are exceptions. Currently, around 300 trolleybus systems are in operation, in cities and towns in 4 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Streetcar
A tram (called a streetcar or trolley in North America) is a rail vehicle that travels on tramway tracks on public urban streets; some include segments on segregated right-of-way. The tramlines or networks operated as public transport are called tramways or simply trams/streetcars. Many recently built tramways use the contemporary term light rail. The vehicles are called streetcars or trolleys (not to be confused with trolleybus) in North America and trams or tramcars elsewhere. The first two terms are often used interchangeably in the United States, with ''trolley'' being the preferred term in the eastern US and ''streetcar'' in the western US. ''Streetcar'' or ''tramway'' are preferred in Canada. In parts of the United States, internally powered buses made to resemble a streetcar are often referred to as "trolleys". To avoid further confusion with trolley buses, the American Public Transportation Association (APTA) refers to them as "trolley-replica buses". In the United ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gustav Lindenthal
Gustav Lindenthal (May 21, 1850 – July 31, 1935) was a civil engineer who designed the Queensboro and Hell Gate bridges in New York City, among other bridges. Lindenthal's work was greatly affected by his pursuit for perfection and his love of art. Having received little formal education and no degree in civil engineering, Lindenthal based his work on his prior experience and techniques used by other engineers of the time. Early life Lindenthal was born in Brünn, Austrian Empire, now Brno, Czech Republic in 1850. Lindenthal began to receive practical training in 1866 when he was employed as a mason and carpenter. At the age of 18, Lindenthal left his family to set out to make a life of his own in Vienna, Austria. Career When he arrived in Vienna he became an assistant in the engineering department for the Empress Elisabeth Railway of Austria. Two years later he joined the Union Construction Company, where he gained experience in building incline planes and railroads. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Italian Renaissance
The Italian Renaissance ( it, Rinascimento ) was a period in Italian history covering the 15th and 16th centuries. The period is known for the initial development of the broader Renaissance culture that spread across Europe and marked the transition from the Middle Ages to modernity. Proponents of a "long Renaissance" argue that it started around the year 1300 and lasted until about 1600. In some fields, a Proto-Renaissance, beginning around 1250, is typically accepted. The French word ''renaissance'' (corresponding to ''rinascimento'' in Italian) means 'rebirth', and defines the period as one of cultural revival and renewed interest in classical antiquity after the centuries during what Renaissance humanists labelled as the "Dark Ages". The Renaissance author Giorgio Vasari used the term ''rinascita'' 'rebirth' in his '' Lives of the Most Excellent Painters, Sculptors, and Architects'' in 1550, but the concept became widespread only in the 19th century, after the work of schola ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burnside Bridge East Tower
Burnside may refer to: Places Antarctica * Burnside Ridges, Oates Land Australia * City of Burnside, a local government area of Adelaide, South Australia ** Burnside, South Australia, a suburb of the City of Burnside * Burnside, New South Wales, in the Oatlands suburb of Sydney * Burnside, Queensland, a suburb in the Sunshine Coast Region * Burnside, Victoria, a suburb of Melbourne * Burnside, Western Australia, in the South West region * Lake Burnside, in the Gibson Desert, Western Australia Canada * Burnside, Nova Scotia, an urban neighbourhood in Dartmouth, Nova Scotia * Burnside Drive, a road in Dartmouth, Nova Scotia * Burnside, Colchester County, an unincorporated rural community in Nova Scotia * Burnside Hall, a building on the downtown campus of McGill University, Montreal, Quebec * Burnside, Newfoundland and Labrador, a seaside town in Newfoundland * Burnside, Ontario, in the township of Severn * Burnside River, Nunavut New Zealand * Burnside, Christchu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ku Klux Klan
The Ku Klux Klan (), commonly shortened to the KKK or the Klan, is an American white supremacist, right-wing terrorist, and hate group whose primary targets are African Americans, Jews, Latinos, Asian Americans, Native Americans, and Catholics, as well as immigrants, leftists, homosexuals, Muslims,and abortion providers The Klan has existed in three distinct eras. Each has advocated extremist reactionary positions such as white nationalism, anti-immigration and—especially in later iterations—Nordicism, antisemitism, anti-Catholicism, Prohibition, right-wing populism, anti-communism, homophobia, Islamophobia, and anti-progressivism. The first Klan used terrorism—both physical assault and murder—against politically active Black people and their allies in the Southern United States in the late 1860s. The third Klan used murders and bombings from the late 1940s to the early 1960s to achieve its aims. All three movements have called for the "purification" of Ame ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multnomah County
Multnomah County is one of the 36 counties in the U.S. state of Oregon. As of the 2020 census, the county's population was 815,428. Multnomah County is part of the Portland–Vancouver– Hillsboro, OR–WA Metropolitan Statistical Area. Though smallest in area, Multnomah County is the state's most populous county. Its county seat, Portland, is the state's largest city. History The area of the lower Willamette River has been inhabited for thousands of years, including by the Multnomah band of Chinookan peoples long before European contact, as evidenced by the nearby Cathlapotle village, just downstream. Multnomah County (the thirteenth in Oregon Territory) was created on December 22, 1854, formed out of two other Oregon counties – the eastern part of Washington County and the northern part of Clackamas County. Its creation was a result of a petition earlier that year by businessmen in Portland complaining of the inconvenient location of the Washington County seat in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sellwood Bridge
The Sellwood Bridge is a deck arch bridge that spans the Willamette River in Portland, Oregon, in the United States. The current bridge opened in 2016 and replaced a 1925 span that had carried the same name. The original bridge was Portland's first fixed-span bridge and, being the only river crossing for miles in each direction, the busiest two-lane bridge in Oregon. The Sellwood Bridge links the Sellwood and Westmoreland neighborhoods of Portland on the east side with Oregon Route 43/Macadam Avenue on the west side. At its east end it leads to Tacoma Street. The bridge is owned and operated by Multnomah County. The original span of 1925 was a steel truss bridge, while its 2016 replacement is a deck-arch-type bridge. Original bridge Designed by Gustav Lindenthal, the first bridge opened on December 15, 1925, at a final cost of $541,000 (equivalent to $6.9 million in 2011). It was long with of vertical waterway clearance. It had four continuous spans, all of Warren type. The t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ross Island Bridge
The Ross Island Bridge is a cantilever truss bridge that spans the Willamette River in Portland, Oregon. It carries U.S. Route 26 (Mount Hood Highway) across the river between southwest and southeast Portland. The bridge opened in 1926 and was designed by Gustav Lindenthal and honors Oregon pioneer Sherry Ross. It is named for its proximity to Ross Island. Although it looks like a deck arch bridge, it is a cantilever deck truss bridge, a rare type in Oregon. History and description The bridge was part of the unprecedented period of bridge building in Portland during the 1920s. It was opened on December 21, 1926, and cost $2 million to construct. The bridge was designed by a famous engineer named Gustav Lindenthal. The bridge is named for its location close to Ross Island, an island in the Willamette River which measures about one-and-a-half by one mile. The bridge is about 800 feet (250 m) north of the island and does not connect with, nor does it provide access to, Ross Isl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Truss Bridge
A truss bridge is a bridge whose load-bearing superstructure is composed of a truss, a structure of connected elements, usually forming triangular units. The connected elements (typically straight) may be stressed from tension, compression, or sometimes both in response to dynamic loads. The basic types of truss bridges shown in this article have simple designs which could be easily analyzed by 19th and early 20th-century engineers. A truss bridge is economical to construct because it uses materials efficiently. Design The nature of a truss allows the analysis of its structure using a few assumptions and the application of Newton's laws of motion according to the branch of physics known as statics. For purposes of analysis, trusses are assumed to be pin jointed where the straight components meet, meaning that taken alone, every joint on the structure is functionally considered to be a flexible joint as opposed to a rigid joint with strength to maintain its own shape, and th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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