Bouygues Construction is responsible for constructing the L2 bypass in Marseille, linking the A7 motorway to the north of the city and the A50 to the east. The bypass project, designed to relieve congestion in the centre of Marseille, takes the form of a 30-year public-private partnership signed with the French Ministry of Ecology, Sustainable Development and Energy covering the financing, design, construction, upkeep, maintenance and renewal of the engineering structures and equipment of the infrastructure, some of which dates back around twenty years. The new link deploys the most energy-efficient and eco-friendly lighting and ventilation systems.