The Oissel Viaduct under construction to reduce water pollution in the Seine

The Oissel Viaduct under construction to reduce water pollution in the Seine

Work is underway on the Oissel viaduct with the installation of a gutter ledge to collect rainwater. (©Le Journal d’Elbeuf)

Lhighway A13 and its axis Paris-Rouen is very busy (up to 100,000 vehicles per day). In order to reduce the pollution of the waters of the Seine, the Oissel Viaduct will treat itself to the medicine of youth and modernity. Work carried out by Sanef (North and East French Motorway Company), which manages track and structure maintenance on the A13.

As part of the reconstruction work, gutter ledges were installed all over the viaduct to collect rainwater, which will be drained into the reservoir. “It’s a bit of a strange place because usually we always manage to remove a lane during the works. Traffic imposed three lanes. We are in a shortened track mode, which is difficult to manage,” says Aubry Palouzier, responsible for the SAPN (Société des Autoroutes Paris Normandie) artwork.

Recycled concrete pool

The settling tank is located under the Oissel Viaduct.
The settling tank is located under the Oissel Viaduct. (©Le Journal d’Elbeuf)

In addition, a 33,000 m2 reservoir was built under the viaduct on the Tourville-la-Rivière side. These basins at altitude, “in case of floods we built it much higher than the Seine” suggests Mikaël Olmo, responsible for operations within the Sanef group. The purpose of this tank is to ensure cleaning by decantation of chronic pollution from highway traffic. Near the Seine, a second so-called compensation reservoir was created under the construction to handle an exceptional flood.

A gutter was installed to collect runoff water.
A gutter was installed to collect runoff water. (©Le Journal d’Elbeuf)

And in case of pollution, the manual valve can close the water inlet to the tank and treat the polluted water. With the environment in mind, this pool was also built from recycled concrete. “We try to manage recycling and work while trying to reduce our carbon emissions,” says Mikaël Olmo.

Oissel Viaduct.
Oissel Viaduct. (©Le Journal d’Elbeuf)

The work, which began in April, is in the final stages, with an end scheduled for November and a return to the original three lanes for motorists. The motorway company also has several construction projects, with the construction of a shared car park in Tourville-la-Rivière next year and work on the Criquebeuf-sur-Seine viaduct within two years.

Was this article helpful to you? Note that you can follow Le Journal d’Elbeuf in the My News section. With one click, after registration, you will find all the news of your favorite cities and brands.

Author Image
adel

Leave a Reply

Your email address will not be published.