It had been named by Communauté Urbaine de Dunkerque in July as the preferred bidder for the €112.4m (£90.3m) scheme.
The 332-month partnership contract covers design, financing, construction, operation and maintenance of the Arena. It will have two halls with a combined seating capacity of 10,700 as well as VIP seats, boxes and walkways serving the stands and the shopping and reception areas. It is home to the USDK handball club and the BCM Gravelines Dunkirk basketball club. It is scheduled for handover in time for the 2015 basketball and handball season.
Design and construction of the Arena, expected to take 36 months, will be carried out by Vinci Construction France through its subsidiaries ADIM Nord Picardie, Sogea Caroni and Dumez EPS, in association with local SMEs. Architectural input will be provided by Chabanne & Partenaires, in partnership with AvantPropos and AB+Architectes. Upkeep and maintenance will be carried out by Vinci Facilities.