Pont de Tancarville
Coordinates: 49 ° 28 ′ 23 " N , 0 ° 27 ′ 51" E
| Pont de Tancarville | ||
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| use | Road bridge | |
| Crossing of | His | |
| place | Tancarville , Marais-Vernier | |
| construction | Suspension bridge | |
| overall length | 1420 m | |
| width | 15 m | |
| Longest span | 608 m | |
| Clear height | 50.85 m | |
| completion | 2nd July 1959 | |
| toll | Yes | |
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The Pont de Tancarville is a road bridge over the Seine near the village of Tancarville in the Seine-Maritime department to Marais-Vernier in the Eure department , France . The suspension bridge was at its opening in 1959 with 608 m the longest wingspan of all bridges in Europe and is still the longest suspension bridge in France.
location
The Pont de Tancarville stands about 25 km above Le Havre and the mouth of the Seine in the English Channel . Until the completion of the Pont de Normandie in 1995, it was the last bridge over the Seine before its mouth. For a long time, the next bridges upstream were the almost 100 river kilometers or 45 km as the crow flies in Rouen , until the 30 km upstream Pont de Brotonne was opened in 1977 .
The bridge uses the steep slope near Tancarville to the north bank of the Seine in order to avoid a long access ramp; on the other bank, on the flat terrain south of the Seine, it was necessary.
traffic
The Pont de Tancarville is on the A 131 / E 5 from Le Havre to the A 13 to Paris, which is classified as N 182 in the area of the bridge and its access roads . The bridge is subject to a toll , but can be used free of charge by small motorbikes , cyclists and pedestrians.
description
The Pont de Tancarville has four lanes and two very narrow walkways. The driving directions on the bridge are only separated by a white line, but not by crash barriers . It is 1,420 m long including the southern access ramp. Measured from anchor block to anchor block, it has a length of 960 m, which is divided into a central field with a span of 608 m and two lateral fields of 176 m each. Its 125 m high pylons stand directly on the banks of the Seine. Its deck girder has a clearance height of 50.85 m to allow the cargo ships, some of which are traveling to Rouen, to pass through.
The roadway girder made of riveted trusses is the result of model tests in the wind tunnel, which excluded excessive vibrations in the bridge.
The pylons consist of two reinforced concrete pillars of constant cross-section, which are connected and stiffened below the roadway and in the upper area by concrete slabs. Its caisson foundations extend to a depth of 18 m on the right bank and to a depth of 28 m on the left bank with swampy soil conditions.
The bridge originally had two suspension ropes made of 60 wire ropes each . 1996 to 1998 the suspension ropes were renewed and doubled. Their ends are fastened in anchor blocks made of prestressed concrete , which transfer the tensile force of the suspension cables into the ground. The anchor block on the left bank is 47 m high, about as high as the Arc de Triomphe and weighs 36,000 tons. The anchors on the right bank are sunk 30 m into the bedrock.
The 400 m long southern access ramp consists of 8 prestressed concrete fields. Its pillars stand on 21 m deep bored piles.
history
The project of a suspension bridge near Tancarville goes back to the time before the Second World War , but construction could not begin until November 15, 1955. On July 2, 1959, the bridge was opened to traffic. It was the first larger suspension bridge with concrete pylons.
Web links
- Pont de Normandie, Pont de Tancarville on the website of the Chambre de commerce et d'industrie du Havre (French)
- Tancarville suspension bridge on Karl Gotsch's website
- Tancarville, anatomie d'un pont suspendu 1/2
- Tancarville, anatomie d'un pont suspendu 2/2
Individual evidence
- ↑ Tolls for the Pont de Tancarville on the website of the Chambre de commerce et d'industrie du Havre (French)
- ↑ Histoire des Ponts on the website of the Chambre de commerce et d'industrie du Havre (French)
- ↑ Leonardo Fernández Troyano: Tierra sobre el Agua. Vision Histórica Universal de los Puentes. Colegio de Ingenieros de Caminos, Canales y Puentes, Madrid 1999, ISBN 84-380-0148-3 , p. 519