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The first bridges are being built – March 2023

Published on 16 March 2023

Discover the "behind the scenes" of the manufacture of the first bridges

If you travel between Montmacq and Cambronne-lès-Ribécourt, you have certainly seen the first abutments “come out of the ground”, in particular those of the bridges which will cross the Oise and the future Canal Seine-Nord Europe.

Following the initial reinforcement work, the concrete pouring, which allows for the construction of the first abutments, was completed at the end of January 2023. Currently, the formwork and concreting of the structures are continuing. While these operations are visible on the construction site, the steel framework of the Seine-Nord Europe Canal bridge deck is taking shape in a fabrication workshop located in the Meuse region. Once finalized, the framework will be delivered to the construction site in 16-meter sections. These sections will then be joined end-to-end on-site to continue the bridge construction. See you in about a month!

Next, the existing bridges over the Oise Lateral Canal and the Oise River will be demolished to allow for the construction of three new bridges, built in a continuous line (bridge over the Oise River, over the CSNE canal, and over the Oise Lateral Canal). This operation will require the closure of the RD 66 road for several months starting at the end of 2023; the dates will be announced as soon as they are finalized.

Did you know?

  • The abutment of a bridge is the part of the structure that serves as a support for the ends of a bridge and allows the weight of the deck to be supported.
  • Apron is the horizontal structure of the bridge that supports the traffic load. It is therefore the part that will then be equipped (with asphalt for vehicles or rails for trains, for example) to allow circulation on either side of the bridge.

A few facts :

  • 105m : span of the triple girder structure crossing the Seine-Nord Europe Canal,
  • 46m : span of twin-girder structures crossing the Oise side canal and the Oise river,
  • 3T : quantity of asphalt needed to build the roads. 
RD 66 bridge and CSNE confluence and Oise side canal - © Lavigne Chéron Architectes

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