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Greenfield Bridge
The Greenfield Bridge, officially known as the Beechwood Boulevard (Greenfield) Bridge II, is a steel arch bridge located in Pittsburgh, Pittsburgh, Pennsylvania, United States. The bridge connects the neighborhoods of Greenfield (Pittsburgh), Greenfield and Squirrel Hill (Pittsburgh), Squirrel Hill (specifically Schenley Park) across the valley known as Four Mile Run (Pittsburgh), Four Mile Run which separates them. The bridge also spans the Parkway East (I-376), which runs along the bottom of the valley. The current steel bridge is the third bridge at this location. The original wooden bridge was built in 1891 and collapsed in 1921. This was replaced by a concrete arch bridge which was completed in 1923 and demolished in 2015 after falling into disrepair. First bridge The original crossing at the site was a wooden Truss bridge, deck truss bridge built in 1891, which was usually referred to as the Forward Avenue Bridge. It was about long and wide. In 1898, it became the southe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Four Mile Run (Pittsburgh)
Four Mile Run, also known as Ruska Dolina (Rusyn Valley), is a valley in the Greenfield section of Pittsburgh, Pennsylvania, United States. The small neighborhood formed around the growth of Pittsburgh's steel industry as Rusyn immigrants settled in the area for employment at the nearby steel mill in the Hazelwood neighborhood and formed St. John Chrysostom Byzantine Catholic Church. Essentially it is the southern portion of Junction Hollow that lies beneath the heavily-traveled Interstate 376, or Parkway East, which is elevated above "The Run" via the Four Mile Run Bridge. For Pittsburghers, it is a place driven over and seldom seen, although St. John Chrysostom Byzantine Catholic Church's golden lit domes can be observed from the Parkway East (Interstate 376). The Run "The Run" itself is reference for a stream—about above The Point—that empties there into the Monongahela River. The neighborhood is distinctive because of its severe geographic isolation from the rest o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Last Week Tonight With John Oliver
''Last Week Tonight with John Oliver'' (often abridged as ''Last Week Tonight'') is an American late-night talk and news satire television program hosted by comedian John Oliver. The half-hour-long show premiered in April 2014 on HBO. ''Last Week Tonight'' shares some similarities with Comedy Central's ''The Daily Show'' (where Oliver was previously featured as a correspondent and fill-in host), as the show takes a satirical look at news, politics and current events, but on a weekly basis and primarily from a liberal bent. Oliver's initial contract with HBO was for two years with an option for extension. In September 2020, HBO announced that the show had been renewed for three additional seasons of 30 episodes each, keeping the show on the air through 2023. The show's ninth season premiered on February 20, 2022. Production Oliver described his preparations for the show to an interviewer for ''The Wire'': "... I basically have to watch everything. The only thing I kind of watch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Road Bridges In Pennsylvania
A road is a linear way for the conveyance of traffic that mostly has an improved surface for use by vehicles (motorized and non-motorized) and pedestrians. Unlike streets, the main function of roads is transportation. There are many types of roads, including parkways, avenues, controlled-access highways (freeways, motorways, and expressways), tollways, interstates, highways, thoroughfares, and local roads. The primary features of roads include lanes, sidewalks (pavement), roadways (carriageways), medians, shoulders, verges, bike paths (cycle paths), and shared-use paths. Definitions Historically many roads were simply recognizable routes without any formal construction or some maintenance. The Organization for Economic Co-operation and Development (OECD) defines a road as "a line of communication (travelled way) using a stabilized base other than rails or air strips open to public traffic, primarily for the use of road motor vehicles running on their own wheels", which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Open-spandrel Deck Arch Bridges In The United States
A spandrel is a roughly triangular space, usually found in pairs, between the top of an arch and a rectangular frame; between the tops of two adjacent arches or one of the four spaces between a circle within a square. They are frequently filled with decorative elements. Meaning There are four or five accepted and cognate meanings of the term ''spandrel'' in architectural and art history, mostly relating to the space between a curved figure and a rectangular boundary – such as the space between the curve of an arch and a rectilinear bounding moulding, or the wallspace bounded by adjacent arches in an arcade and the stringcourse or moulding above them, or the space between the central medallion of a carpet and its rectangular corners, or the space between the circular face of a clock and the corners of the square revealed by its hood. Also included is the space under a flight of stairs, if it is not occupied by another flight of stairs. In a building with more than one floor, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steel Bridges In The United States
Steel is an alloy made up of iron with added carbon to improve its strength and fracture resistance compared to other forms of iron. Many other elements may be present or added. Stainless steels that are corrosion- and oxidation-resistant typically need an additional 11% chromium. Because of its high tensile strength and low cost, steel is used in buildings, infrastructure, tools, ships, trains, cars, machines, electrical appliances, weapons, and rockets. Iron is the base metal of steel. Depending on the temperature, it can take two crystalline forms (allotropic forms): body-centred cubic and face-centred cubic. The interaction of the allotropes of iron with the alloying elements, primarily carbon, gives steel and cast iron their range of unique properties. In pure iron, the crystal structure has relatively little resistance to the iron atoms slipping past one another, and so pure iron is quite ductile, or soft and easily formed. In steel, small amounts of carbon, other ele ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Concrete Bridges In The United States
Concrete is a composite material composed of fine and coarse aggregate bonded together with a fluid cement (cement paste) that hardens (cures) over time. Concrete is the second-most-used substance in the world after water, and is the most widely used building material. Its usage worldwide, ton for ton, is twice that of steel, wood, plastics, and aluminum combined. Globally, the ready-mix concrete industry, the largest segment of the concrete market, is projected to exceed $600 billion in revenue by 2025. This widespread use results in a number of environmental impacts. Most notably, the production process for cement produces large volumes of greenhouse gas emissions, leading to net 8% of global emissions. Other environmental concerns include widespread illegal sand mining, impacts on the surrounding environment such as increased surface runoff or urban heat island effect, and potential public health implications from toxic ingredients. Significant research and development is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Demolished Bridges In The United States
Demolition (also known as razing, cartage, and wrecking) is the science and engineering in safely and efficiently tearing down of buildings and other artificial structures. Demolition contrasts with deconstruction, which involves taking a building apart while carefully preserving valuable elements for reuse purposes. For small buildings, such as houses, that are only two or three stories high, demolition is a rather simple process. The building is pulled down either manually or mechanically using large hydraulic equipment: elevated work platforms, cranes, excavators or bulldozers. Larger buildings may require the use of a wrecking ball, a heavy weight on a cable that is swung by a crane into the side of the buildings. Wrecking balls are especially effective against masonry, but are less easily controlled and often less efficient than other methods. Newer methods may use rotational hydraulic shears and silenced rock-breakers attached to excavators to cut or break through wo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridges In Pittsburgh
The Bridges of Pittsburgh play an important role in the city's transportation system. Without bridges, the Pittsburgh region would be a series of fragmented valleys, hillsides, river plains, and isolated communities. A 2006 study determined that, at the time, Pittsburgh had 446 bridges. With its proximity to three major rivers and countless hills and ravines, Pittsburgh is known as ''"The City of Bridges"''. History Pittsburgh's first river bridges, made of wood and long since replaced, opened in 1818 at Smithfield Street and 1819 at Sixth Street (then St. Clair Street). The city's oldest in-service bridge is the current Smithfield Street Bridge, which opened in 1883; it was designated a National Historic Landmark in 1976. Pittsburgh waged a massive road and bridge building campaign from 1924 to 1940; most of Pittsburgh's oldest major bridges date from this period. The coming of the Interstate Highway System triggered more construction in the second half of the twentieth centur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridges Completed In 2017
A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or rail) without blocking the way underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually something that is otherwise difficult or impossible to cross. There are many different designs of bridges, each serving a particular purpose and applicable to different situations. Designs of bridges vary depending on factors such as the function of the bridge, the nature of the terrain where the bridge is constructed and anchored, and the material used to make it, and the funds available to build it. The earliest bridges were likely made with fallen trees and stepping stones. The Neolithic people built boardwalk bridges across marshland. The Arkadiko Bridge (dating from the 13th century BC, in the Peloponnese) is one of the oldest arch bridges still in existence and use. Etymology The ''Oxford English Dictionary'' traces the origin of the wo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridges Completed In 1923
A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or rail) without blocking the way underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually something that is otherwise difficult or impossible to cross. There are many different designs of bridges, each serving a particular purpose and applicable to different situations. Designs of bridges vary depending on factors such as the function of the bridge, the nature of the terrain where the bridge is constructed and anchored, and the material used to make it, and the funds available to build it. The earliest bridges were likely made with fallen trees and stepping stones. The Neolithic people built boardwalk bridges across marshland. The Arkadiko Bridge (dating from the 13th century BC, in the Peloponnese) is one of the oldest arch bridges still in existence and use. Etymology The ''Oxford English Dictionary'' traces the origin of the wo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
YouTube
YouTube is a global online video platform, online video sharing and social media, social media platform headquartered in San Bruno, California. It was launched on February 14, 2005, by Steve Chen, Chad Hurley, and Jawed Karim. It is owned by Google, and is the List of most visited websites, second most visited website, after Google Search. YouTube has more than 2.5 billion monthly users who collectively watch more than one billion hours of videos each day. , videos were being uploaded at a rate of more than 500 hours of content per minute. In October 2006, YouTube was bought by Google for $1.65 billion. Google's ownership of YouTube expanded the site's business model, expanding from generating revenue from advertisements alone, to offering paid content such as movies and exclusive content produced by YouTube. It also offers YouTube Premium, a paid subscription option for watching content without ads. YouTube also approved creators to participate in Google's Google AdSens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pittsburgh Tribune-Review
The ''Pittsburgh Tribune-Review'', also known as "the Trib," is the second largest daily newspaper serving metropolitan Pittsburgh, Pennsylvania, in the United States. Although it transitioned to an all-digital format on December 1, 2016, it remains the second largest daily in the state, with nearly one million unique page views a month. Founded on August 22, 1811, as the ''Greensburg Gazette'' and in 1889 consolidated with several papers into the ''Greensburg Tribune-Review'', the paper circulated only in the eastern suburban counties of Westmoreland and parts of Indiana and Fayette until May 1992, when it began serving all of the Pittsburgh metropolitan area after a strike at the two Pittsburgh dailies, the ''Pittsburgh Post-Gazette'' and ''Pittsburgh Press'', deprived the city of a newspaper for several months. The Tribune-Review Publishing Company was owned by Richard Mellon Scaife, an heir to the Mellon banking, oil, and aluminum fortune, until his death in July 2014. Sca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
