IN Brief:
- CAP 2020 represents a total investment of €303m excluding VAT.
- Works include an extended basin and a deep-water quay with two unrestricted berths.
- The completed terminal is intended to double Dunkirk’s container-handling capacity.
The Port of Dunkirk has moved its €303m CAP 2020 container expansion into the principal construction phase, beginning a programme intended to double the French port’s handling capacity.
Work will extend the Atlantic basin and create a deep-water quay capable of receiving the largest container vessels without tidal restrictions. Two new berths are planned for continuous operation, allowing ships to be handled throughout the day.
The port’s investment is valued at €303m excluding VAT at 2024 prices. European Commission state-aid approval and the port authority’s final investment decision cleared the way for construction and the later appointment of a terminal operator.
A consortium led by Spie batignolles fondations is delivering the principal quay package, with Spie batignolles nord, ETPO, Spie batignolles travaux publics, Ramery TP, and Fayat Fondations also participating.
Valued at approximately €132m excluding VAT, the package covers the deep-water structure, ground engineering, reinforced concrete, excavation, filling, utilities, connections, and supporting infrastructure required before terminal equipment and operational systems can be installed.
The main civil engineering phase follows an initial preparation period and is expected to continue for around 32 months. Peak activity could involve approximately 200 workers across marine construction, foundations, concrete, earthworks, surveying, logistics, temporary works, and related disciplines.
Project quantities indicate the scale of the operation, including extensive diaphragm walls, substantial reinforced-concrete volumes, and more than one million cubic metres each of excavation and fill as the basin and quay line are reconfigured.
Marine construction combines heavy civil engineering with an unusually dense range of operational and environmental constraints. Dredging, retaining structures, groundwater, navigation, concrete durability, existing terminal activity, and the movement of excavated material must be coordinated before cargo-handling equipment reaches the site.
Diaphragm-wall construction will govern much of the quay’s structural performance. Panels must be installed to tight alignment and depth tolerances before excavation and tie-in work expose the completed wall to permanent earth and water loads.
Quality records for joints, reinforcement cages, concrete, embedded components, and panel continuity will remain important throughout the excavation sequence. Defects concealed within the retaining structure become increasingly difficult to address once the basin has been opened and the quay deck advanced.
The quantity of excavated and imported material creates a substantial logistics programme in its own right. Haul routes, stockpiles, testing, treatment, reuse, disposal, dust, noise, and traffic all need to be integrated with the main construction sequence.
Maximising reuse can reduce transport movements and environmental impact, although geotechnical properties and contamination levels will determine how much material can return as engineered fill. Suitable material must also be available in the correct sequence rather than merely existing somewhere within the site.
Exposure to the marine environment raises durability requirements across the permanent works. Concrete mix design, reinforcement cover, crack control, corrosion protection, fenders, bollards, rails, and embedded services must withstand salt, impact, cyclic loading, and intensive operation.
Construction will proceed within an active port serving industrial, bulk, ferry, vehicle, energy, and container traffic. Marine access, road movements, security, work zones, and temporary restrictions therefore have to preserve existing operations rather than treating the surrounding estate as a closed construction site.
The civil structures must also align with the future terminal operator’s equipment and systems. Ship-to-shore cranes, yard layouts, power, drainage, lighting, communications, security, gates, rail connections, and automated systems require interfaces to be fixed before all operating decisions are complete.
Dunkirk plans to make the quay available before full terminal commissioning so that the selected operator can complete its own equipment and infrastructure investment. The finished facility is scheduled to enter service in 2029.
Located close to major North Sea shipping routes and the industrial markets of northern France, Belgium, and the wider European hinterland, the port has a strong geographic case for additional capacity. Greater quay throughput will still depend on road, rail, customs, storage, and inland distribution absorbing the additional volume.
CAP 2020 therefore extends well beyond the quay wall. Long-term performance will depend on terminal productivity, intermodal connections, energy supply, equipment availability, and the port’s ability to attract regular services.
The civil engineering programme now under way establishes the physical platform for that expansion. Completion of the marine works will transfer the emphasis towards terminal equipment, systems integration, testing, and commissioning ahead of the 2029 opening.
