Pont de Neuilly

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Coordinates: 48 ° 53 ′ 12 ″  N , 2 ° 15 ′ 17 ″  E

Pont de Neuilly
Pont de Neuilly
use Road and metro bridge
Crossing of Seine and embankments
place Neuilly-sur-Seine , Courbevoie , Puteaux
construction Steel arch bridge
overall length 250 m
width 40 m
Clear width 69 m / 82 m
completion 1942
location
Pont de Neuilly (Hauts-de-Seine)
Pont de Neuilly

The Pont de Neuilly is a bridge over the Seine between Neuilly-sur-Seine on the right and Courbevoie and Puteaux on the left bank. All three places belong to the Hauts-de-Seine department in the greater Paris area in France .

location

The bridge lies in the course of the Ax historique from the Louvre over the Place de la Concorde , the Avenue des Champs-Élysées , the Arc de Triomphe , the Avenue de la Grande Armée, the Porte Maillot , the Avenue Charles-de-Gaulle and the Pont de Neuilly to the Grande Arche in the high-rise district of La Défense .

function

The bridge serves the traffic on Avenue Charles-de-Gaulle with two tracks in the middle of metro line 1 as well as four lanes and wide sidewalks, which runs towards it underground, drives openly over the bridge and immediately behind the bridge again in one Tunnel disappears. This tunnel under the Défense is also the beginning of the Autoroute A14 , which joins the Autoroute A13 further to the west (also called Autoroute de Normandie and Autoroute de l'Ouest ).

description

Right steel arch bridge

The Pont de Neuilly with a total length of around 250 m consists of four individual bridges: First, a segmented arch bridge made of reinforced concrete, clad with natural stone, crosses the four lanes of the right bank street Boulevard du Général Kœnig / Boulevard du Général Leclerc . This bridge also serves as an abutment for the following two-articulated steel arch bridge with an elevated deck slab, which spans a side arm of the Seine to the Île du Pont with a clear width of 69 m . From the approximately 60 m long central part, monumental stone stairs lead down to the island. On the other side of the island there is a similar steel arch bridge with a clear width of 82 m over the other arm of the Seine and finally a reinforced concrete bridge again crosses the three lanes of the left bank street Quai de Dion Bouton . The two steel bridges are 40 m wide, the concrete front bridges protrude a little further.

history

Until 1606 there was only one ferry connection to the north across the Seine. A poorly loaded ferry was supposed to bring Henri IV and Queen Maria de 'Medici back from St-Germain-en-Laye to Paris via Neuilly on June 9, 1606 . The ferry capsized and the queen had to be pulled out of the Seine by the hair. Then Henri IV had a wooden bridge built over the Seine in 1606. This became dilapidated over time and was partially destroyed by the ice drift in 1768. Louis XV therefore had a 219 m long stone arch bridge built by Jean-Rodolphe Perronet from 1768 , which was inaugurated on September 22, 1772.

Perronet, the head of the École royale des ponts et chaussées , dealt with the construction of a stone bridge that should also withstand the ice drift. The construction work was awarded on March 29, 1768. Together with the bridge, the extension of the Avenue des Champs-Elysées , today's Avenue de la Grande Armée , was created. The bridge was completed in what was then a short construction time of only six years. Not only the very large spans of the arches of the same size caused a sensation, but also the narrow pillars. Perronet thus expressly turned away from the view still prevailing at the time that the pillar strength had to be a fifth of the span. With an arch opening of 39 m, this would have required 7.80 m thick piers. Perronet emphasized, however, that more important than the thickness of the pillars is their careful foundation, if necessary on piling, which really reached down to a stable floor. Given the well-known good quality of the stone blocks from Saillancourt, 9 miles away, 4.20 thick pillars were sufficient, even 3.25 m would be sufficient. In addition, it is crucial to leave as much space as possible for the water flowing through and thereby avoid a backwater in the upper water of the bridge, which poses major problems for shipping. Last but not least, an elegant appearance of the structure corresponding to the importance of the bridge is also important. Perronet presented these considerations in detail in his work Description des projets ... , in which he also printed the service description ( Devis ) on which the award was based . From today's point of view, the information contained therein of the (very minor) settlement to be expected when removing the falsework is remarkable. It consisted of 5 identical basket arches with a span of 39 m. The basket arches were widened at both ends by so-called cornes de vache . From the keystone , a significantly wider cage arch opens to the narrow pillar porches, from where it runs diagonally inward to the actual bridge arch. This makes the pillars, which were only an astonishing 4.22 m thick, appear even narrower and lighter and gives the bridge a more pleasing appearance. The bridge had a 9.42 m wide carriageway and two sidewalks of almost 2 m each; in total it was 14.6 m wide. The roadway and the roads leading to it were on a horizontal level, there were no ramps leading to the bridge and no inclines on the bridge. On April 27, 1887, the Pont de Neuilly was the starting point of the first automobile race in history; the goal was in Paris' Bois de Boulogne .

Perronets stone bridge was the forerunner of today's Pont de Neuilly , opened on December 2, 1942. On April 1, 1992, the new steel bridge was inaugurated, which had been extended by some additional sheets to accommodate the extension of the metro line 1 to La Défense to create .

literature

Web links

Commons : Pont de Neuilly  - Collection of images, videos and audio files

Individual evidence

  1. ↑ gazoline.net; De Dion-Bouton