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Tirantes Bridge
The Tirantes Bridge is a cable-stayed bridge that crosses the River Lérez in the city of Pontevedra, Spain, linking the south bank to the north bank at the level of the city's Congress Hall. Designed by Leonardo Fernandez Troyano and Francisco Javier Manterola Armisen in 1992, it was inaugurated in 1995. It is one of the 33 most outstanding bridges in Spain. History The construction of the bridge was planned by the Xunta de Galicia to connect the two banks of the River Lérez at the beginning of the 1990s as part of a large urban planning project for the development of the north-eastern area of the city, on the drained land of a former Marshland. The project included the construction of the Pontevedra Congress Hall and a cable-stayed bridge to serve it as a northbound exit from the city. The jury of the preliminary design competition for the bridge, chaired by the Regional Minister of Public Works, José Cuíña, announced its decision on 15 December 1991. Construction of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Motor Vehicle
A motor vehicle, also known as motorized vehicle or automotive vehicle, is a self-propelled land vehicle, commonly wheeled, that does not operate on Track (rail transport), rails (such as trains or trams) and is used for the transportation of people or cargo. The vehicle propulsion is provided by an engine or motor, usually an internal combustion engine or an electric motor, or some combination of the two, such as hybrid electric vehicles and plug-in hybrids. For legal purpose, motor vehicles are often identified within a number of vehicle classes including cars, buses, motorcycles, off-road vehicles, light trucks and regular trucks. These classifications vary according to the legal codes of each country. International Organization for Standardization, ISO 3833:1977 is the standard for road vehicle types, terms and definitions. Generally, to avoid requiring people with disabilities from having to possess an operator's license to use one, or requiring tags and insurance, powered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Counterweight
A counterweight is a weight that, by applying an opposite force, provides balance and stability of a mechanical system. The purpose of a counterweight is to make lifting the load faster and more efficient, which saves energy and causes less wear and tear on the lifting machine. Counterweights are often used in traction lifts (elevators), cranes and funfair rides. In these applications, the expected load multiplied by the distance that load will be spaced from the central support (called the "tipping point") must be equal to the counterweight's mass times its distance from the tipping point in order to prevent over-balancing either side. This distance times mass is called the load moment. A counterbalance is a weight or force that balances or offsets another as when two objects of equal weight, power, or influence are acting in opposition to each other. The objects are then said to be in counterbalance. Counterweights in action Trebuchet: There are five major components of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cable-stayed Bridges In Spain
A cable-stayed bridge has one or more ''towers'' (or ''pylons''), from which cables support the bridge deck. A distinctive feature are the cables or stays, which run directly from the tower to the deck, normally forming a fan-like pattern or a series of parallel lines. This is in contrast to the modern suspension bridge, where the cables supporting the deck are suspended vertically from the main cable, anchored at both ends of the bridge and running between the towers. The cable-stayed bridge is optimal for spans longer than cantilever bridges and shorter than suspension bridges. This is the range within which cantilever bridges would rapidly grow heavier, and suspension bridge cabling would be more costly. Cable-stayed bridges were being designed and constructed by the late 16th century, and the form found wide use in the late 19th century. Early examples, including the Brooklyn Bridge, often combined features from both the cable-stayed and suspension designs. Cable-stayed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridges Completed In 1995
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] |
Cable-stayed Bridges
A cable-stayed bridge has one or more ''towers'' (or ''pylons''), from which cables support the bridge deck. A distinctive feature are the cables or stays, which run directly from the tower to the deck, normally forming a fan-like pattern or a series of parallel lines. This is in contrast to the modern suspension bridge, where the cables supporting the deck are suspended vertically from the main cable, anchored at both ends of the bridge and running between the towers. The cable-stayed bridge is optimal for spans longer than cantilever bridges and shorter than suspension bridges. This is the range within which cantilever bridges would rapidly grow heavier, and suspension bridge cabling would be more costly. Cable-stayed bridges were being designed and constructed by the late 16th century, and the form found wide use in the late 19th century. Early examples, including the Brooklyn Bridge, often combined features from both the cable-stayed and suspension designs. Cable-staye ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Road Bridges In Spain
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] |
Bridges Completed In The 20th Century
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] |
Bridges Over The Lérez River
A bridge is a structure built to Span (engineering), 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Santiago Bridge
The Santiago Bridge (''St. James Bridge'') crosses the Lérez River in the city of Pontevedra (Spain), where the N-550 road runs alongside it. It connects the city centre with the A Xunqueira area and the O Burgo district. History The project for this bridge, designed to relieve congestion on the Burgo Bridge over which the N-550 used to run, was presented in 1980. Construction began in June 1981 and was carried out by the Spanish Government's Ministry of Public Works at a cost of 173 million pesetas. Inaugurated on 11 September 1983 by the former Minister of Public Works Jesús Sancho Rof, it was not fully operational until the redevelopment of Buenos Aires Avenue and the inauguration of Compostela Avenue on 3 July 1987, which, with four lanes, gave continuity to the Santiago Bridge and offered a new exit to the city from the north towards Santiago de Compostela and A Coruña. Description It is a reinforced concrete girder bridge with two decks supported on four pillars ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barca Bridge
The Barca Bridge is a bridge over the Lérez River, at its mouth in the Pontevedra Ria, which connects the city of Pontevedra (in the area of A Moureira) with the municipality of Poio in Spain. History According to documents from 1197, the boat passage, which gave its name to the place and the bridge, was controlled by the Benedictine monks of the monastery of St John of Poio. In the 19th century, the Society of Seamen of Pontevedra exploited the passage, which led to clashes with the monastery of Poio, the Marquis of Riestra and the Spanish Navy. To avoid these confrontations, given the need to build a bridge, the "Barca bridge building society" was created, formed by the Seafarers' Society, the inhabitants of Poio and capitalist partners. First bridge The first low wooden bridge at La Barca was built in 1867 and began operating in 1871. The structure included a lifting section, which was lifted with a winch to allow the passage of large ships to the Galera and Burgo qu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burgo Bridge
The Burgo Bridge ''(Puente del Burgo)'' is a medieval bridge, built over an older bridge of Roman origin, which crosses the Lérez River in the city of Pontevedra, Spain. It is on the route of the Portuguese Way to the north of the historic centre of Pontevedra and to the south of the Burgo neighbourhood. Between the arches above the pillars are carved the famous stone pilgrim's shells. History The present medieval bridge is the heir to the first Roman bridge over which the Roman road XIX passed according to Antonine Itinerary. This bridge still existed in the 12th century but was in ruins. It remained for a very long time the only crossing point of the Lérez River on the Portuguese Way. The first references to the current bridge date back to 1165, when King Ferdinand the Catholic of León and King Afonso I of Portugal signed the Peace of Lérez in the ''super flumen Lerice in vetula ponte'', designating the old Roman bridge as the Old Bridge. In the 15th century, the br ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Currents Bridge
The Currents Bridge (''puente de las Corrientes'' in Spanish), is a tied-arch bridge that crosses the Lérez River in the city of Pontevedra, Spain. It was inaugurated in 2012 and connects Uruguay Avenue and Domingo Fontán Street. History The location of the bridge is known as ''The Currents'' ''(Las Corrientes)'', because this is where the waters of the Rons river meet those of the Lérez river and the ria of Pontevedra. Since 1989, the construction of a new bridge in this place of ''The Currents'' was planned to connect the two banks of the Lérez river. However, it was not until the beginning of the 21st century that this idea was taken up again to provide another exit from the city centre to the north and the beaches of the ria de Pontevedra and direct access to the Autopista AP-9, AP-9 motorway, In 2008, the city council organised an ideas competition to decide on the design of the new bridge. In the end, one of the proposals for an tied-arch bridge was chosen because it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
