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MacArthur Boulevard (Washington, D.C.)
MacArthur Boulevard is a road in Montgomery County, Maryland and Washington, D.C. The road follows a northwest–southeast route from the Great Falls area of the Chesapeake and Ohio Canal National Historical Park in Potomac, Maryland, to Foxhall Road NW and 44th Street NW in the Foxhall neighborhood of Washington, D.C., near the Georgetown Reservoir. MacArthur Boulevard runs parallel to the Clara Barton Parkway and the C&O Canal for most of its route, passing through the Palisades area of the District. In Cabin John, traffic is reduced to a single alternating lane as it passes over the Union Arch Bridge, the longest span masonry arch bridge in the Western Hemisphere, and which also carries the Washington Aqueduct. History The road was originally named Conduit Road, as it was built atop the Washington Aqueduct. The aqueduct delivers water from the Potomac River to the Dalecarlia Reservoir, which is the primary source of drinking water in the District of Columbia. The road ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Douglas MacArthur
Douglas MacArthur (26 January 18805 April 1964) was an American military leader who served as General of the Army for the United States, as well as a field marshal to the Philippine Army. He had served with distinction in World War I, was Chief of Staff of the United States Army during the 1930s, and he played a prominent role in the Pacific theater during World War II. MacArthur was nominated for the Medal of Honor three times, and received it for his service in the Philippines campaign. This made him along with his father Arthur MacArthur Jr. the first father and son to be awarded the medal. He was one of only five men to rise to the rank of General of the Army in the U.S. Army, and the only one conferred the rank of field marshal in the Philippine Army. Raised in a military family in the American Old West, MacArthur was valedictorian at the West Texas Military Academy where he finished high school, and First Captain at the United States Military Academy at West Po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Union Arch Bridge
The Union Arch Bridge, also called the "Cabin John Bridge", is a historic masonry structure in Cabin John, Maryland. It was designed as part of the Washington Aqueduct. The bridge construction began in 1857 and was completed in 1864. The roadway surface was added later. The bridge was designed by Alfred Landon Rives, and built by the United States Army Corps of Engineers under the direction of Lieutenant Montgomery C. Meigs. The Union Arch Bridge was designated as a National Historic Civil Engineering Landmark by the American Society of Civil Engineers in 1972 and was listed in the National Register of Historic Places in 1973. Bridge design The bridge, with an overall length of and width of , is constructed of Massachusetts granite and red sandstone quarried at the nearby Seneca Quarry, and rises above Cabin John Creek. The main arch span is long and rises . The bridge has an internal spandrel wall structure that contains nine additional smaller arches, which are concea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roads In Montgomery County, Maryland
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", ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Downtown (Washington, D
''Downtown'' is a term primarily used in North America by English speakers to refer to a city's sometimes commercial, cultural and often the historical, political and geographic heart. It is often synonymous with its central business district (CBD). Downtowns typically contain a small percentage of a city’s employment. In some metropolitan areas it is marked by a cluster of tall buildings, cultural institutions and the convergence of rail transit and bus lines. In British English, the term "city centre" is most often used instead. History Origins The Oxford English Dictionary's first citation for "down town" or "downtown" dates to 1770, in reference to the center of Boston. Some have posited that the term "downtown" was coined in New York City, where it was in use by the 1830s to refer to the original town at the southern tip of the island of Manhattan.Fogelson, p. 10. As the town of New York grew into a city, the only direction it could grow on the island was toward the nor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maryland
Maryland ( ) is a state in the Mid-Atlantic region of the United States. It shares borders with Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware and the Atlantic Ocean to its east. Baltimore is the largest city in the state, and the capital is Annapolis. Among its occasional nicknames are '' Old Line State'', the ''Free State'', and the '' Chesapeake Bay State''. It is named after Henrietta Maria, the French-born queen of England, Scotland, and Ireland, who was known then in England as Mary. Before its coastline was explored by Europeans in the 16th century, Maryland was inhabited by several groups of Native Americans – mostly by Algonquian peoples and, to a lesser degree, Iroquoian and Siouan. As one of the original Thirteen Colonies of England, Maryland was founded by George Calvert, 1st Baron Baltimore, a Catholic convert"George Calvert and Cecilius Calvert, Barons Baltimore" William Hand Browne, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
District Of Columbia
) , image_skyline = , image_caption = Clockwise from top left: the Washington Monument and Lincoln Memorial on the National Mall, United States Capitol, Logan Circle, Jefferson Memorial, White House, Adams Morgan, National Cathedral , image_flag = Flag of the District of Columbia.svg , image_seal = Seal of the District of Columbia.svg , nickname = D.C., The District , image_map = , map_caption = Interactive map of Washington, D.C. , coordinates = , subdivision_type = Country , subdivision_name = , established_title = Residence Act , established_date = 1790 , named_for = George Washington, Christopher Columbus , established_title1 = Organized , established_date1 = 1801 , established_title2 = Consolidated , established_date2 = 1871 , established_title3 = Home Rule Act ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Traffic Circle
A roundabout is a type of circular intersection or junction in which road traffic is permitted to flow in one direction around a central island, and priority is typically given to traffic already in the junction.''The New Shorter Oxford English Dictionary,'' Volume 2, Clarendon Press, Oxford (1993), page 2632 Engineers use the term modern roundabout to refer to junctions installed after 1960 that incorporate various design rules to increase safety. Both modern and non-modern roundabouts, however, may bear street names or be identified colloquially by local names such as rotary or traffic circle. Compared to stop signs, traffic signals, and earlier forms of roundabouts, modern roundabouts reduce the likelihood and severity of collisions greatly by reducing traffic speeds and minimizing T-bone and head-on collisions. Variations on the basic concept include integration with tram or train lines, two-way flow, higher speeds and many others. For pedestrians, traffic exiting the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cabin John Creek
Cabin John Creek is a tributary stream of the Potomac River in Montgomery County, Maryland. The watershed covers an area of . The headwaters of the creek originate in the city of Rockville, and the creek flows southward for U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map, accessed August 15, 2011 to the Potomac River. History Early land records in 1715 cite Captain John's Run, now Cabin John Creek. The toponym "Cabin John" is thought to be a corruption of the name "Captain John", but the origin of the name remains unresolved. Course The headwaters of the creek originate in the city of Rockville. The Cabin John Stream Valley Trail follows the course of the creek for , passing through Cabin John Regional Park and Cabin John Local Park. The Union Arch Bridge carries MacArthur Boulevard and the Washington Aqueduct over the stream about 1/4 mile before the creek flows through a culvert under the Chesapeake and Ohio Canal and empties ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dead End (street)
A dead end, also known as a cul-de-sac (, from French for 'bag-bottom'), no through road or no exit road, is a street with only one inlet or outlet. The term "dead end" is understood in all varieties of English, but the official terminology and traffic signs include many different alternatives. Some of these are used only regionally. In the United States and other countries, ''cul-de-sac'' is often not an exact synonym for ''dead end'' and refers to dead ends with a circular end, allowing for easy turning at the end of the road. In Australia and Canada, they are usually referred to as a ''court'' when they have a bulbous end. Dead ends are added to road layouts in urban planning to limit through-traffic in residential areas. While some dead ends provide no possible passage except in and out of their road entry, others allow cyclists, pedestrians or other non-automotive traffic to pass through connecting easements or paths, an example of filtered permeability. The Internati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Geospatial-Intelligence Agency
The National Geospatial-Intelligence Agency (NGA) is a combat support agency within the United States Department of Defense whose primary mission is collecting, analyzing, and distributing geospatial intelligence (GEOINT) in support of national security. Initially known as the National Imagery and Mapping Agency (NIMA) from 1996 to 2003, it is a member of the United States Intelligence Community. NGA headquarters, also known as NGA Campus East or NCE, is located at Fort Belvoir North Area in Springfield, Virginia. The agency also operates major facilities in the St. Louis, Missouri area (referred to as NGA Campus West or NCW), as well as support and liaison offices worldwide. The NGA headquarters, at , is the third-largest government building in the Washington metropolitan area after The Pentagon and the Ronald Reagan Building. In addition to using GEOINT for U.S. military and intelligence efforts, NGA provides assistance during natural and man-made disasters, aids in sec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Luther Alexander Johnson
Luther Alexander Johnson (October 29, 1875 – June 6, 1965) was a United States Congressman from the U.S. state of Texas. Early years Luther was born in Corsicana, Texas, where he attended the public schools. He received his L.L.B. in 1896 from Cumberland University in Lebanon, Tennessee, and was admitted to the Bar association the same year. He commenced practice in Corsicana and was attorney for Central Texas Grocery Company and The Royall Coffee Company. He was a prosecuting attorney of Navarro County from 1898 to 1902 and district attorney of the thirteenth judicial district of Texas from 1904 to 1910. Congress He served as a delegate to the Democratic National Convention in 1916 and as chairman of the Democratic State convention in 1920. Johnson was elected as a Democrat to the Sixty-eighth and to the eleven succeeding Congresses and served from March 4, 1923, until his resignation on July 17, 1946. A confidential 1943 analysis of the House Foreign Affairs Committee b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dalecarlia Reservoir
Dalecarlia Reservoir is the primary storage basin for drinking water in Washington, D.C., fed by an underground aqueduct in turn fed by low dams which divert portions of the Potomac River near Great Falls and Little Falls. The reservoir is located between Spring Valley and the Palisades, two neighborhoods in Northwest Washington, and Brookmont, a neighborhood in Montgomery County, Maryland. The reservoir was completed in 1858 by the United States Army Corps of Engineers as part of the Washington Aqueduct project. It began providing water on January 3, 1859. Initially the reservoir provided water to the city from the adjacent Little Falls Branch until the aqueduct construction was completed. Regular water service from the Potomac River source through the aqueduct commenced in 1864. The reservoir was modified in 1895 and 1935 to improve water quality and increase water supply. In 1942, the headquarters of the Army Map Service was established on the grounds adjacent to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
