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List Of Crossings Of The Allegheny River
This is a list of current bridges and other crossings of the Allegheny River starting from Pittsburgh, Pennsylvania, where it joins the Monongahela to form the Ohio River. Crossings Pennsylvania New York Pennsylvania See also * * * * * List of crossings of the Ohio River * List of crossings of the Monongahela River This is a complete list of current bridges and other crossings of the Monongahela River starting from Pittsburgh, Pennsylvania, where the river helps to form the headwaters of the Ohio River, and ending in Fairmont, West Virginia, where the West F ... References {{DEFAULTSORT:Allegheny River * Allegheny Lists of river crossings in the United States Allegheney ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridge
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fort Wayne Railroad Bridge
The Fort Wayne Railroad Bridge, listed as the Pennsylvania Railroad Bridge on the National Register of Historic Places, is a double-deck steel truss railroad bridge spanning the Allegheny River in Pittsburgh, Pennsylvania. The upper deck carries the Fort Wayne Line with two tracks of Norfolk Southern and Amtrak traffic. The lower deck is unused. The bridge crosses above the Allegheny and its longest span is . History The bridge was built between 1901 and 1904 by American Bridge Company on new piers immediately next to the 1868 bridge it replaced while the old bridge remained in use. The 1868 bridge was a five-span wrought-iron lattice truss built for the Pittsburgh, Fort Wayne and Chicago Railway with two simple plate girder spans as approach roads at each end. In 1918 the bridge and associated approaches were raised (as were other neighboring bridges) to increase navigable headroom. The lower level was used by local freight trains switching in the Downtown area and the Str ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
31st Street Bridge, Pittsburgh
31 (thirty-one) is the natural number following 30 and preceding 32. It is a prime number. In mathematics 31 is the 11th prime number. It is a superprime and a self prime (after 3, 5, and 7), as no integer added up to its base 10 digits results in 31. It is a lucky prime and a happy number; two properties it shares with 13, which is its dual emirp and permutable prime. 31 is also a primorial prime, like its twin prime, 29. 31 is the number of regular polygons with an odd number of sides that are known to be constructible with compass and straightedge, from combinations of known Fermat primes of the form 22''n'' + 1. 31 is the third Mersenne prime of the form 2''n'' − 1. It is also the eighth Mersenne prime exponent, specifically for the number 2,147,483,647, which is the maximum positive value for a 32-bit signed binary integer in computing. After 3, it is the second Mersenne prime not to be a double Mersenne prime. 127, which is the 31st prime number, is a doubl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
31st Street Bridge
The William Raymond Prom Memorial Bridge, commonly known as the 31st Street Bridge, is an arch bridge that carries vehicular traffic across the Allegheny River between the Pittsburgh neighborhoods of Troy Hill and the Strip District. The bridge passes over, but does not serve, Washington's Landing, which is connected to the mainland by the 30th Street Bridge. Sidewalks along the bridge feature viewing platforms. History The bridge was built in 1927–1928 to replace an earlier through truss bridge aligned with 30th Street. This earlier bridge was built in 1887 but was destroyed by fire on July 8, 1921. The 1887 bridge itself replaced a two span iron truss which was destroyed by a flood in 1882. A cable suspension footbridge was provided as a crossing whilst the new 31st Street bridge was being constructed. The bridge was due to close on Tuesday January 31, 2006 for a proposed $27 million refurbishment which would take two years. It eventually closed on February 14, 2006 and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
30thstpgh
3 (three) is a number, numeral and digit. It is the natural number following 2 and preceding 4, and is the smallest odd prime number and the only prime preceding a square number. It has religious or cultural significance in many societies. Evolution of the Arabic digit The use of three lines to denote the number 3 occurred in many writing systems, including some (like Roman and Chinese numerals) that are still in use. That was also the original representation of 3 in the Brahmic (Indian) numerical notation, its earliest forms aligned vertically. However, during the Gupta Empire the sign was modified by the addition of a curve on each line. The Nāgarī script rotated the lines clockwise, so they appeared horizontally, and ended each line with a short downward stroke on the right. In cursive script, the three strokes were eventually connected to form a glyph resembling a with an additional stroke at the bottom: ३. The Indian digits spread to the Caliphate in the 9th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
30th Street Bridge
The 30th Street Bridge, is a girder bridge that carries vehicular traffic across the Allegheny River between the Pittsburgh neighborhoods of Troy Hill and Herrs Island (known by the moniker of Washington's Landing). This is the fourth bridge that has stood on this site. A wooden 19th Century bridge was washed away during an 1882 flood. This was replaced by an arch bridge that spanned the entire width of the Allegheny River; after a 1921 fire destroyed the span across the main channel, the 31st Street Bridge was constructed as a replacement, and this bridge was again relegated to taking traffic to Herrs Island. A 1939 truss bridge then stood on this site, and it was replaced by the current structure as part of the redevelopment of the island to feature condominiums and a business park instead of warehouses and stockyards. See also *List of crossings of the Allegheny River This is a list of current bridges and other crossings of the Allegheny River starting from Pittsburgh, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herr's Island Railroad Bridge
The Herr's Island Railroad Bridge, also known as the West Penn Railroad Bridge, is a truss bridge across the Allegheny River in the United States between the Pittsburgh neighborhoods of Troy Hill and Herrs Island (commonly referred to as Washington's Landing). History The bridge was built in 1890 by the Western Pennsylvania Railroad (West Penn) to gain access to Herr's Island. It left the main line on the mainland by means of a curving red brick viaduct and three plate girder spans over River Avenue and the B&O before crossing the back channel on a Whipple truss to reach the stockyards and warehouses on the island. In 1903, the West Penn was purchased by the Pennsylvania Railroad, becoming the Western Penn branch. The bridge was strengthened and raised later in the same year to match the raised land level on the island. Between 1970 and 1990, the brick viaduct and three plate girder spans were removed. In 1999, about a decade after the redevelopment of the island with condomini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
16th St From The Strip
16 (sixteen) is the natural number following 15 and preceding 17. 16 is a composite number, and a square number, being 42 = 4 × 4. It is the smallest number with exactly five divisors, its proper divisors being , , and . In English speech, the numbers 16 and 60 are sometimes confused, as they sound very similar. Sixteen is the fourth power of two. For this reason, 16 was used in weighing light objects in several cultures. The British have 16 ounces in one pound; the Chinese used to have 16 ''liangs'' in one ''jin''. In old days, weighing was done with a beam balance to make equal splits. It would be easier to split a heap of grains into sixteen equal parts through successive divisions than to split into ten parts. Chinese Taoists did finger computation on the trigrams and hexagrams by counting the finger tips and joints of the fingers with the tip of the thumb. Each hand can count up to 16 in such manner. The Chinese abacus uses two upper beads to represent the 5s and 5 low ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David McCullough Bridge
The David McCullough Bridge, commonly and historically known as the 16th Street Bridge, is a steel trussed through arch bridge that spans the Allegheny River in Pittsburgh, Pennsylvania. The 16th Street Bridge replaced the Mechanics Street Bridge which had been completed at the behest of the State of Pennsylvania in 1838. The 16th Street Bridge was constructed in 1922 with a length of and a width of . The bridge was listed on the National Register of Historic Places in 1979. The 16th Street Bridge is one of the more popular bridges in the city of Pittsburgh and provides easy access to the Strip District and the North Shore. Days after the disastrous St. Patrick's Day Flood of 1936, reports spread on March 20 that the bridge had collapsed from the pressure of the receding flood waters and debris, prompting Pittsburgh Police Chief Jacob Dorsey to close all city bridges for fear of receding waters and debris weakening or collapsing them. However, the reports were soon disco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Veterans Bridge (Pittsburgh)
The Veterans Bridge is a steel and welded girder bridge that carries Interstate 579 over the Allegheny River in Pittsburgh, Pennsylvania. Completed in 1988 it cost $420 million (or $ in terms). It opened on November 11, 1988 complete with 107th National Guard howitzers firing ceremoniously from the deck, as the last link in I-579. The bridge, in length, has a main span of and is above the water. The roadway atop the structure is seven lanes wide, with six lanes dedicated to northbound and southbound traffic (three per direction) and one lane designed for reversible High Occupancy Vehicle (HOV-2) movements. The bridge is also designated "pghe585-17". See also * * * * List of crossings of the Allegheny River References See also *List of crossings of the Allegheny River This is a list of current bridges and other crossings of the Allegheny River starting from Pittsburgh, Pennsylvania, where it joins the Monongahela to form the Ohio River. Crossings Pennsylvania ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fort Wayne Line
The Fort Wayne Line and Fort Wayne Secondary is a rail line owned and operated by the Norfolk Southern Railway (NS), Chicago, Fort Wayne and Eastern Railroad (CFE), and CSX Transportation in Pennsylvania, Ohio, and Indiana. The line runs from Pittsburgh, west via Fort Wayne, Indiana, to Gary, Indiana, along what was once the Pennsylvania Railroad's Pittsburgh to Chicago main line. From downtown Pittsburgh, at the west end of the Pittsburgh Line, west to the junction with CSX's Greenwich Subdivision at Crestline, Ohio, NS owns the line. Major junctions include the Conemaugh Line in northern Pittsburgh, the Cleveland Line at Rochester, Pennsylvania, the Youngstown Line at New Brighton, Pennsylvania, the Lordstown Secondary east of Alliance, Ohio, and the Cleveland Line again at Alliance. From Crestline west to Adams junction in Allen County, Indiana, (Fort Wayne Line) and beyond to the Gary, Indiana, neighborhood of Tolleston (Fort Wayne Secondary), the line is owned by CS ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
