Gennevilliers motorway bridge

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Coordinates: 48 ° 56 ′ 57 ″  N , 2 ° 16 ′ 49 ″  E

Gennevilliers motorway bridge
Gennevilliers motorway bridge
Convicted A15 Autoroute A 15
Crossing of His
Subjugated Ligne de la Grande Ceinture
place Argenteuil - Gennevilliers
construction Prestressed concrete - box girder bridges
overall length 636 m
width 2 × 18.50 m
Number of openings five
Longest span 172 m
start of building 1974; 1990
completion 1976; 1992
planner Jacques Mathivat , Alain Spielmann
location
Gennevilliers motorway bridge (Hauts-de-Seine)
Gennevilliers motorway bridge

The Gennevilliers motorway bridge ( French Viaduc de Gennevilliers ) leads the Autoroute A 15 between Argenteuil in the Val-d'Oise department and Gennevilliers in the Hauts-de-Seine department in the north- west of Paris over the Seine and the eastern entry channel to the port of Gennevilliers, the ( after Duisburg ) second largest inland port in Europe. The motorway is then led on an elevated road along the harbor basin 5 to the motorway junction with the A 86 ring motorway .

At his inauguration in 1976, the highway bridge Genneviliers was the largest in the cantilever built prestressed concrete bridge in France.

Parallel to the bridge built between 1974 and 1976, a second viaduct was built east of it between 1990 and 1992 . Since then, each bridge has been used with four lanes and one hard shoulder in one direction of travel.

The four-story house under the bridge on Rue des Grand Saules was only demolished in the late 2000s.

First bridge (1976)

When tendering for the bridge, 12 bids were submitted, 5 for a steel and 7 for a concrete variant. The bid from Campenon Bernard for the prestressed concrete bridge planned by Jacques Mathivat , who consulted Alain Spielmann on the architectural design, was accepted. Mathivat received the ordre de service de commencer (invitation to start construction) on March 15, 1974 , which is customary in France .

The 636 m long bridge is curved in plan and has five openings with pillar spacing of 105 + 172 + 74 + 172 + 113 m, whereby the two 172 m wide fields lead over the Seine and the port entrance.

The carriageway girder consists of an 18.5 m wide slab on a two-cell, haunched hollow box with a trapezoidal cross-section, the height of which decreases from 9.0 m at the pillars to 3.5 m in the middle of the field.

The reinforced concrete - pillars are 15 to 22 m high and have a solid cross-sections of 3.5 m × 9.0. They had to be founded with bored piles to a depth of 40 m.

The bridge was by the system Dywidag in cantilever carried out with in-situ concrete.

The elevated road along the harbor basin 5 was built by CITRA at the same time. The 962 m long bridge has pillar center distances of 40 + 44 + 42.22 + 2 × 44.70 + 15 × 49.40 m. The prestressed concrete bridge has two parallel, rectangular, single-cell box girders with an unchanged overall height of 2.7 m, which are supported by central pillars via large trusses. The superstructure is divided into 4  continuous girders of 174.9 + 292.2 + 247.5 + 243.5 m length and was carried out with an advancing armor .

Both bridge structures together are therefore 636 m + 962 m = 1598 m long.

Second Bridge (1992)

The second bridge, built east of the first bridge, has practically the same dimensions, but its box girder is single-celled and has a rectangular cross-section. It was carried out by Spie Batignolles from 1990 to 1992 .

The extension along the harbor basin 5 was created by a joint venture consisting of Fougerolle and GTM Construction using the incremental launching method.

Collapse of a retaining wall (2018)

On May 15, 2018, a retaining wall collapsed in the area of ​​the western abutment of the first bridge from 1976. Some filler material slid down the steep slope, which led to the lowering of the road towards Paris. Initially, the bridge was completely closed, but after the first renovation measures, the two left lanes could be opened again on May 20, 2018. The ground anchoring and refurbishment measures lasted until March 19, 2019, when the construction site was completed and all four lanes were again unrestricted. The incident was presented in a report to the Senate .

Web links

Commons : Viaduc de Gennevilliers  - collection of images, videos and audio files

Individual evidence

  1. ^ Serge Montens: Les 500 plus beaux ponts de France . Christine Bonneton, Chamalière 2009, ISBN 978-2-86253-648-4 , pp. 225 .
  2. ↑ 50 ans du Val d'Oise: l'A15 on the department's website
  3. ↑ Bernard Marrey: Les Ponts Modern; 20 e siècle. Picard éditeur, Paris 1995, ISBN 2-7084-0484-9 , p. 186
  4. ↑ Marcel Prade: Les grands ponts du monde . Première partie, Ponts remarquables d'Europe. Brissaud à Poitiers, ISBN 2-902170-65-3 , p. 245
  5. ↑ Viaduct No. 15 along the Darse near Gennevilliers. In: Structurae
  6. ↑ Gennevilliers Bridge over the Seine (1991). In: Structurae
  7. ↑ Viaduct No. 15 along the Darse near Gennevilliers (1991). In: Structurae
  8. ↑ A15 - Réparation du mur de soutènement sur l'A15 à Argenteuil on the DiRIF website - Direction des routes Îles-de-France
  9. ^ Report d'information sur la sécurité des ponts. Annexe 3: Examples de ponts présentant des dégradations. Publication by the Senate on December 3, 2019