The Noyon lock opens the ball for the main consultations of 2025

The Noyon lock will be located on the western edge of the city, close to the current Canal du Nord. It is one of the highest locks on the Seine-Nord Europe Canal, with a water drop height of 21,07 metres. As with the 5 other large-gauge locks that will be built, the internal dimensions of the lock chamber are 12,5 metres wide and 195 metres long.

The execution of the contract will take place in 2 phases:

• a first phase of 63 months corresponding to the works, including 9 months of preparation (preparatory work to clear the rights-of-way, site installations and access roads),
• a second phase of 16 months of special operating assistance services (which begin during the last months of work).

The contract, the procedure for which will involve negotiations with companies, will cover the main construction works of the lock, including:

• Special foundation works: retaining screens in diaphragm walls and their associated works (for example: injected plug, struts, tie rods, drainage and sanitation),
• Devices for exhausting drainage flows for the excavations of the lock carried out under the water table including the buffer basin for the drainage water,
• Earthworks in excavation within the enclosure created and their provisional or permanent storage,
• The construction of the mainly reinforced concrete structures of the lock: airlock, upstream and downstream heads, valve tower, savings basins, connection aqueducts, pumping station and its ancillary works (intermediate chamber, discharge structure, pipelines),
• Earthworks in embankment in contact with and around structures,
• The manufacture and assembly of part of the equipment including lock gates, lock sluices, floating bollards for easy mooring of boats in the lock, etc.
• The insertion and coordination of this equipment with other equipment,
• Assembly of metal equipment of the airlock such as bollards, ladders or walkways,
• Construction work on port facilities in the outer ports,
• Waterproofing work outer harbors,
• Operating operations works constructed or assembled between the partial or total completion of construction and the start of operation of the Seine-Nord Europe Canal.

The Noyon lock site will be the subject of other contracts that will be launched later: equipment, building and landscaping. Sourcing and early consultation with companies have made it possible to define this allocation, with the aim of providing access for SMEs. The sourcing work with professional federations is continuing, in particular for the establishment of a relevant and balanced contractual framework for this type of project. It will then be broken down, for the main works contracts (including the lock contracts), in the DCEs given to the candidates selected for the "offers" phase.