Société des Ports du Détroit gathers same shareholders than the Société d’Exploitation des Ports du Détroit ones -the SEPD is Boulogne-sur-Mer and Calais port concession’s holder- plus the Grand Port Maritime of Dunkerque whose participation aims at promoting and developing the Channel ports. SPD and SEPD common shareholding federates both leading investment funds together with the historical operator of Boulogne-sur-Mer and Calais ports.


Created in 2005, Meridiam is an independent investment company specializing in the development, financing and management of public infrastructure projects in the long term. With offices in Paris, New York, Toronto and Istanbul, Meridiam is the European and North American leading company investing in public infrastructures. Nowadays Meridiam has invested in more of 100 projects for a € 18 billion total amount. Meridiam is a founding member of the Long Term Infrastructure Investors Association.

Meridiam develops, builds, finances and operates :

  • Transport infrastructures : high-speed lines, highways, tunnels, airports ;

  • Social and educational facilities : schools, universities, health centers, hospitals, public research centers ;

  • Service buildings for the public : courthouses, administrative centers, government and ministry buildings ;

  • Network infrastructures for water, energy, telecommunications, waste management.

Meridiam is involved in the company group constitution in which it participates by choosing industrial and financial partners to lead to contract awards. Meridiam provides expertise throughout the bidding and is an active shareholder from the construction to the operational step. Its shareholders are financial institutions and institutional investors.


CDC Infrastructure is a 100 % subsidiary of the Caisse des Dépôts et Consignations and a long term investor in key assets for the economic development and attractiveness in a country : energy networks, high-speed railways, tram networks, ports, airports, highways, very high speed telecommunications networks, water and waste management facilities, etc.

CDC Infrastructure has a significant experience with a “track record” in its leading investments including in particular :

  • for transport : Sanef, Millau overpass, Eurotunnel, Orlyval, Alicorne A88, LGV Sud Europe Atlantique and Rhônexpress, the Company La Rocade 2 in Marseille ;

  • for energy transport networks : Gaz de Strasbourg, GRTgaz and Nord Gas Infrastructure.

CDC Infrastructure belongs to the Caisse des Dépôts Group, made of Caisse des Dépôts et Consignations public institution and its subsidiaries. This public institution includes the operational activities of general interest such as regulated banking services, savings funds, retirement and solidarity, territorial development, etc. and the functional activities such as general administration, communication, etc. Its subsidiaries conduct market activities. Their activities directly contribute to the Group corporate purpose and indirectly to the Caisse des Dépôts result employing this resource to finance general interest missions.


The Côte d’Opale Chamber of Commerce and Industry is born from the merger of Boulogne-sur-Mer, Calais and Dunkirk Chambers of Commerce and Industries and has been operating for a long time Boulogne and Calais ports with a unique expertise in both Channel traffic and fishing. Calais is the first port in the continental Europe for traffic with Great-Britain. Boulogne-sur-Mer is the first French fishing port with a European place for the processing of sea products.


The 4 territorial Chambers of Commerce and Industries compose the Nord de France Chamber of Commerce and Industry which federates them by contributing to the economic, territorial development and attractiveness as well as giving business support to companies.


The Port of Dunkirk is the third French port, well known as a heavy bulk cargo port for its many industrial facilities and the Ro-Ro traffic with Great-Britain, transport of containers, fruits, etc.

Dunkirk is the 7th northern European Range port from Le Havre to Hamburg. Dunkirk is the first French port for importing ores and coal, fruits in containers, copper, for its railway network and the second French port for trade with Great Britain.