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Saint-Nazaire Bridge
The Saint-Nazaire Bridge (french: Le pont de Saint-Nazaire) is a cable-stayed bridge spanning the river Loire and linking Saint-Nazaire on the north bank and Saint-Brevin-les-Pins on the south bank, in the department of Loire-Atlantique, Pays de la Loire, France. The bridge is crossed by the "''Route bleue''" (RD213). The cable-stayed metallic structure measures 720 m and, including the access viaducts, represents a total length of 3 356 m. History The bridge was commissioned on October 18, 1975, after three years of construction. Including its 404 m central span, the 720 m metal structure held, at its construction, the world record length for a cable-stayed metallic bridge. In 1992, the Loire-Atlantique general council took over the Saint-Nazaire SAEM, the contractor for the creation and operation of the bridge. Access to the bridge became toll-free on October 1, 1994. The building was returned to the department's general council road heritage organization, which has been ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loire
The Loire (, also ; ; oc, Léger, ; la, Liger) is the longest river in France and the 171st longest in the world. With a length of , it drains , more than a fifth of France's land, while its average discharge is only half that of the Rhône. It rises in the southeastern quarter of the French Massif Central in the Cévennes range (in the department of Ardèche) at near Mont Gerbier de Jonc; it flows north through Nevers to Orléans, then west through Tours and Nantes until it reaches the Bay of Biscay (Atlantic Ocean) at Saint-Nazaire. Its main tributaries include the rivers Nièvre, Maine and the Erdre on its right bank, and the rivers Allier, Cher, Indre, Vienne, and the Sèvre Nantaise on the left bank. The Loire gives its name to six departments: Loire, Haute-Loire, Loire-Atlantique, Indre-et-Loire, Maine-et-Loire, and Saône-et-Loire. The lower-central swathe of its valley straddling the Pays de la Loire and Centre-Val de Loire regions was added to the World ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prestressed Concrete
Prestressed concrete is a form of concrete used in construction. It is substantially "prestressed" ( compressed) during production, in a manner that strengthens it against tensile forces which will exist when in service. Post-tensioned concreted is "structural concrete in which internal stresses have been introduced to reduce potential tensile stresses in the concrete resulting from loads." This compression is produced by the tensioning of high-strength "tendons" located within or adjacent to the concrete and is done to improve the performance of the concrete in service. Tendons may consist of single wires, multi-wire strands or threaded bars that are most commonly made from high-tensile steels, carbon fiber or aramid fiber. The essence of prestressed concrete is that once the initial compression has been applied, the resulting material has the characteristics of high-strength concrete when subject to any subsequent compression forces and of ductile high-strength steel when sub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buildings And Structures In Loire-Atlantique
A building, or edifice, is an enclosed structure with a roof and walls standing more or less permanently in one place, such as a house or factory (although there's also portable buildings). Buildings come in a variety of sizes, shapes, and functions, and have been adapted throughout history for a wide number of factors, from building materials available, to weather conditions, land prices, ground conditions, specific uses, prestige, and aesthetic reasons. To better understand the term ''building'' compare the list of nonbuilding structures. Buildings serve several societal needs – primarily as shelter from weather, security, living space, privacy, to store belongings, and to comfortably live and work. A building as a shelter represents a physical division of the human habitat (a place of comfort and safety) and the ''outside'' (a place that at times may be harsh and harmful). Ever since the first cave paintings, buildings have also become objects or canvasses of much artistic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridges Completed In 1974
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 w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cable-stayed Bridges In France
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] |
List Of Bridges In France
This list of bridges in France lists bridges of particular historical, scenic, architectural or engineering interest. Road and railway bridges, viaducts, aqueducts and footbridges are included. Historical and architectural interest bridges {{row indexer, {, class{{="wikitable sortable" , - ! class{{="unsortable", ! scope{{=col , ! scope{{=col , Name ! scope{{=col width{{="200" , Distinction ! scope{{=col , Length ! scope{{=col , Type ! scope{{=col , Carries''Crosses'' ! scope{{=col , Opened ! scope{{=col , Location ! scope{{=col , District ! class{{="unsortable", Ref. , - , , , _row_count, , Pont Julien, , Historic monument, , {{convert, 118, m, ft, abbr=on, , {{Sort, M, Masonry3 semi-circular arches, , {{center, Via DomitiaFormer road bridge''Calavon'', , 3 BC, , Apt–Bonnieux{{Coord, 43, 51, 45.3, N, 5, 18, 23.4, E, type:landmark, display=inline, name=Pont Julien, , Vaucluse, , {{cite web , url=https://www.pop.culture.gouv.fr/notice/merimee/PA00081981 , title=Pont Ju ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pays De Retz
The Pays de Retz (; br, Bro-Raez, link=no; ) is a historical subregion of France that currently forms part of the Loire-Atlantique department, but which previously formed part of the Duchy of Brittany. The area lies between the southern shore of the Loire estuary and the '' Marais breton'' (Breton marshlands), bordered to the west by the ''Baie de Bourgneuf'' (Bourgneuf Bay) and on the east by the ''Lac de Grand-Lieu'' (Grand-Lieu Lake) and a network of small rivers. Its main towns are Rezé (which was its capital and the see of a Catholic Diocese of Rezé from 510 to 851), Pornic, Paimbœuf and Machecoul (another historical capital city). History In the early 9th century the area formed part of Frankish territory, but was coveted by the Breton ruler Nominoe. Nominoe and his son Erispoe won a series of victories over the Franks between 843 and 851, resulting in the Treaty of Angers (851) between Charles the Bald and Erispoe, which gave "''Ratense''" or ''Pays de Retz'' to Brit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coach (bus)
A coach (or coach bus/motorcoach) is a type of bus built for longer-distance service, in contrast to transit buses that are typically used within a single metropolitan region. Often used for touring, intercity, and international bus service, coaches are also used for private charter for various purposes. Coaches are also related and fall under a specific category/type of RVs. Deriving the name from horse-drawn carriages and stagecoaches that carried passengers, luggage, and mail, modern motor coaches are almost always high-floor buses, with separate luggage hold mounted below the passenger compartment. In contrast to transit buses, motor coaches typically feature forward-facing seating, with no provision for standing. Other accommodations may include onboard restrooms, televisions, and overhead luggage space. History Background Horse-drawn chariots and carriages ("coaches") were used by the wealthy and powerful where the roads were of a high enough standard from p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Traffic Jams
Traffic congestion is a condition in transport that is characterized by slower speeds, longer trip times, and increased vehicular queueing. Traffic congestion on urban road networks has increased substantially since the 1950s. When traffic demand is great enough that the interaction between vehicles slows the speed of the traffic stream, this results in some congestion. While congestion is a possibility for any mode of transportation, this article will focus on automobile congestion on public roads. As demand approaches the capacity of a road (or of the intersections along the road), extreme traffic congestion sets in. When vehicles are fully stopped for periods of time, this is known as a traffic jam or (informally) a traffic snarl-up. Traffic congestion can lead to drivers becoming frustrated and engaging in road rage. Mathematically, traffic is modeled as a flow through a fixed point on the route, analogously to fluid dynamics. Causes Traffic congestion occurs when ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Traffic Code
Traffic codes are laws that generally include provisions relating to the establishment of authority and enforcement procedures, statement of the Traffic#Rules of the road, rules of the road, and other safety provisions. Administrative regulations for driver license, driver licensing, vehicle ownership and Registry of Motor Vehicles, registration, insurance, vehicle safety inspections and parking violations may also be included, though not always directly related to driving safety. Violations of traffic code (i.e., a "moving violation") are often dealt with by forfeiting a Fine (penalty), fine in response to receiving a valid citation ("getting a Ticket (notification), ticket"). Other violations, such as drunk driving or vehicular homicide are handled through the Criminal law, criminal courts, although there may also be lawsuit, civil and administrative cases that arise from the same violation (including payment of damages and loss of driving privileges). In some jurisdictions, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Estuary
An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime environments and are an example of an ecotone. Estuaries are subject both to marine influences such as tides, waves, and the influx of saline water, and to fluvial influences such as flows of freshwater and sediment. The mixing of seawater and freshwater provides high levels of nutrients both in the water column and in sediment, making estuaries among the most productive natural habitats in the world. Most existing estuaries formed during the Holocene epoch with the flooding of river-eroded or glacially scoured valleys when the sea level began to rise about 10,000–12,000 years ago. Estuaries are typically classified according to their geomorphological features or to water-circulation patterns. They can have many different names, such as bays, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saint-Nazaire
Saint-Nazaire (; ; Gallo: ''Saint-Nazère/Saint-Nazaer'') is a commune in the Loire-Atlantique department in western France, in traditional Brittany. The town has a major harbour on the right bank of the Loire estuary, near the Atlantic Ocean. The town is at the south of the second-largest swamp in France, called "la Brière". Given its location, Saint-Nazaire has a long tradition of fishing and shipbuilding. The Chantiers de l'Atlantique, one of the largest shipyards in the world, constructed notable ocean liners such as , , and the cruise ship , the largest passenger ship in the world until 2022. Saint-Nazaire was a small village until the Industrial Revolution but became a large town in the second half of the 19th century, thanks to the construction of railways and the growth of the seaport. Saint-Nazaire progressively replaced upstream Nantes as the main haven on the Loire estuary. As a major submarine base for the Kriegsmarine, Saint-Nazaire was subject to a succes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
