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Blue Line (MBTA)
The Blue Line is a rapid transit line in the Greater Boston metropolitan area, one of MBTA subway, four rapid transit lines operated by the Massachusetts Bay Transportation Authority (MBTA). It runs from Bowdoin (MBTA station), Bowdoin station in downtown Boston under Boston Harbor to East Boston and Revere, Massachusetts, Revere on the inner North Shore, where it terminates at Wonderland station, Wonderland. The stop at Airport Station (MBTA), Airport Station, by way of a free shuttle bus, is one of two rapid transit connections to Logan International Airport. In 1967, during a systemwide rebranding, the line was assigned the blue color because it passes under the Boston Harbor. With an end-to-end travel time of less than twenty minutes, the Blue Line is the shortest of Boston's heavy-rail lines and the only line to have both third rail and overhead catenary sections. The East Boston Tunnel was built as a streetcar tunnel in 1904 with Howard Adams Carson, Howard A. Carson as ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
State Station
State station (also called State Street) is an underground Massachusetts Bay Transportation Authority (MBTA) rapid transit station located in downtown Boston, Massachusetts. It is the transfer point between the Orange Line (MBTA), Orange Line and the Blue Line (MBTA), Blue Line, and one of four "hub stations" on the MBTA subway system. The Orange Line has two side platforms on two levels, while the Blue Line has two side platforms on a single level. The station is fully accessible. The East Boston Tunnel (predecessor of the modern Blue Line) opened as a streetcar tunnel in 1904, with Devonshire one of its two stations in downtown Boston. The Washington Street Tunnel opened to carry the Main Line (predecessor of the Orange Line) in 1908, with platforms at Milk and State. In 1924, the East Boston Tunnel was converted to use metro rolling stock. The MBTA renamed the lines to the Blue Line and Orange Line in 1965, and renamed both stations to State in 1967. The Orange Line platfor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Howard Adams Carson
Howard Adams Carson (1842–1931) was an American civil engineer and pioneer of tunnel construction.obit in ''Boston Herald'', Tuesday October 27, 1931 Carson received his B.S. from MIT in 1869. He was an assistant engineer at the Providence, Rhode Island water works from 1871 to 1877. He then became an engineer for Boston's metropolitan engineering department. He was appointed as the chief engineer for Boston's new sewage and drainage system, which he designed in 1887. When the Boston Transit Commission was created in 1894, he was appointed as the Commission's Chief Engineer. Carson is most famous as the chief engineer for the Tremont Street subway, which was begun in March 1895 and completed in September 1897. He was also the chief engineer of the East Boston and Washington Street subways. In 1909 he resigned from the Boston Transit Commission and then served as a consultant for several engineering projects, including the construction of the New York subway and a two-track rai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red Line (MBTA)
The Red Line is a rapid transit line operated by the Massachusetts Bay Transportation Authority (MBTA) as part of the MBTA subway system. The line runs south and east underground from Alewife station in North Cambridge, Massachusetts, North Cambridge through Somerville, Massachusetts, Somerville and Cambridge, Massachusetts, Cambridge, surfacing to cross the Longfellow Bridge then returning to tunnels under Downtown Boston. It continues underground through South Boston, splitting into two branches on the surface at JFK/UMass station. The Ashmont branch runs southwest through Dorchester, Boston, Dorchester to Ashmont station, where the connecting light rail Mattapan Line (shown as part of the Red Line on maps, but operated separately) continues to Mattapan station. The Braintree branch runs southeast through Quincy, Massachusetts, Quincy and Braintree, Massachusetts, Braintree to Braintree station (MBTA), Braintree station. The Red Line operates during normal MBTA service hours (al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rapid Transit Technology
Rapid transit or mass rapid transit (MRT) or heavy rail, commonly referred to as metro, is a type of high-capacity public transport that is generally built in urban areas. A grade separated rapid transit line below ground surface through a tunnel can be regionally called a subway, tube, metro or underground. They are sometimes grade-separated on elevated railways, in which case some are referred to as el trains – short for "elevated" – or skytrains. Rapid transit systems are usually electric railways, that unlike buses or trams operate on an exclusive right-of-way, which cannot be accessed by pedestrians or other vehicles. Modern services on rapid transit systems are provided on designated lines between stations typically using electric multiple units on railway tracks. Some systems use guided rubber tires, magnetic levitation (''maglev''), or monorail. The stations typically have high platforms, without steps inside the trains, requiring custom-made trains in order to m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Square, Cambridge
Central Square is an area in Cambridge, Massachusetts centered on the junction of Massachusetts Avenue (Cambridge), Massachusetts Avenue, Prospect Street and Western Avenue. , formed by the junction of Massachusetts Avenue, Columbia Street, Sidney Street and Main Street, is also considered a part of the Central Square area. Harvard Square is to the northwest along Massachusetts Avenue, Inman Square is to the north along Prospect Street and Kendall Square is to the east along Main Street. The section of Central Square along Massachusetts Avenue between Clinton Street and Main Street is designated the Central Square Historic District, and was added to the National Register of Historic Places in 1990. Culture Central Square was designated an official Cultural District in the state of Massachusetts by the Mass Cultural Council in October 2012. Central Square is known for its wide variety of ethnic restaurants, churches, bars, and live music and theatre venues. Richard B. Modica Way ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Longfellow Bridge
The Longfellow Bridge is a steel rib arch bridge spanning the Charles River to connect Boston's Beacon Hill, Boston, Massachusetts, Beacon Hill neighborhood with the Kendall Square area of Cambridge, Massachusetts. The bridge carries Massachusetts Route 3, the Massachusetts Bay Transportation Authority, MBTA Red Line (MBTA), Red Line, bicycle, and pedestrian traffic. The structure was originally known as the Cambridge Bridge, and a predecessor structure was known as the West Boston Bridge; Boston also continued to use "West Boston Bridge" officially for the new bridge. The bridge is also known to locals as the "Salt-and-Pepper Bridge" due to Salt and pepper shakers, the shape of its central towers. The bridge falls under the jurisdiction and oversight of the Massachusetts Department of Transportation (MassDOT). The bridge carries approximately 28,600 cars and 90,000 mass-transit passengers every weekday. A portion of the MBTA subway's elevated Charles/MGH station lies at the ea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bowdoin Station
Bowdoin station ( ) is a Massachusetts Bay Transportation Authority (MBTA) rapid transit station in Bowdoin Square in Boston, Massachusetts. The station is the downtown terminus of the Blue Line (MBTA), Blue Line, part of the MBTA subway system. It has a single wedge-shaped island platform located inside a balloon loop. Bowdoin is the only Blue Line station that is not MBTA accessibility, accessible. Bowdoin opened in 1916 as part of an extension of the East Boston Tunnel, serving as the terminal for streetcar lines from East Boston. The line was converted to use high-floor trains in 1924, with raised platforms constructed at the stations. The station was modernized in 1968, with a new brutalist headhouse designed by Josep Lluís Sert. Bowdoin was closed for two periods in the early 1980s due to budget cuts; it was open for limited hours on weekdays only until 2014, when it returned to full-time service during the reconstruction of nearby Government Center station (MBTA), Gover ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joy Street Incline, 1915
Joy is the state of being that allows one to experience feelings of intense, long-lasting happiness and contentment of life. It is closely related to, and often evoked by, well-being, success, or good fortune. Happiness, pleasure, and gratitude are closely related to joy but are not identical to it. Distinction vs similar emotions saw a clear distinction between joy, pleasure, and happiness: "I sometimes wonder whether all pleasures are not substitutes for Joy", and "I call it Joy, which is here a technical term and must be sharply distinguished both from Happiness and Pleasure. Joy (in my sense) has indeed one characteristic, and one only, in common with them; the fact that anyone who has experienced it will want it again... I doubt whether anyone who has tasted it would ever, if both were in his power, exchange it for all the pleasures in the world. But then Joy is never in our power and Pleasure often is." Michela Summa says that the distinction between joy and happiness ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlantic Avenue Elevated
The Atlantic Avenue Elevated was an elevated railway around the east side of Downtown Boston, Massachusetts, providing a second route for the Boston Elevated Railway's Main Line Elevated (now the MBTA's Orange Line) around the Washington Street tunnel. It was in use from 1901 to 1938, when it was closed due to low ridership, later being demolished. History The Atlantic Avenue El was conceived as a part of a greater mass transit proposal by the Boston Transit Commission in 1896. After the success of the Tremont Street subway (now the Green Line) the Commission began looking at options for a unified system that would serve all of downtown Boston and reach out into the growing suburbs. As conceived, there would be two corridors through which elevated trains would run: the Washington Street tunnel – the heart of today's MBTA Orange Line subway – under Washington Street from a portal at Oak Street to the then-existing subway portal north of Haymarket Square, and an all- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Streetcar
A tram (also known as a streetcar or trolley in Canada and the United States) is an urban rail transit in which vehicles, whether individual railcars or multiple-unit trains, run on tramway tracks on urban public streets; some include segments on segregated right-of-way. The tramlines or tram networks operated as public transport are called tramways or simply trams/streetcars. Because of their close similarities, trams are commonly included in the wider term '' light rail'', which also includes systems separated from other traffic. Tram vehicles are usually lighter and shorter than main line and rapid transit trains. Most trams use electrical power, usually fed by a pantograph sliding on an overhead line; older systems may use a trolley pole or a bow collector. In some cases, a contact shoe on a third rail is used. If necessary, they may have dual power systems—electricity in city streets and diesel in more rural environments. Occasionally, trams also carry frei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tunnelling Shield
A tunnelling shield is a protective structure used during the excavation of large, human-made tunnels. When excavating through ground that is soft, liquid, or otherwise unstable, there is a potential health and safety hazard to workers and the project itself from falling materials or a cave-in. A tunnelling shield can be used as a temporary support structure. It is usually in place for the short-term from when the tunnel section is excavated until it can be lined with a permanent support structure. The permanent structure may be made up of, depending on the period, bricks, concrete, cast iron, or steel. Although modern shields are commonly cylindrical, the first "shield", designed by Marc Isambard Brunel, was actually a large, rectangular, scaffold-like iron structure with three levels and twelve sections per level, with a solid load-bearing top surface. The structure protected the men from cave-ins as they laboured within it, digging the tunnel out in front of the shield. Histor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
