COWI is a multidisciplinary, internationally operating, engineering company in design, assessment and repair activities within traditional disciplines of civil, transportation, building and environmental engineering and planning. Since the start in 1930, COWI has participated in more than 15000 projects in 75 countries. Infrastructure construction is a speciality of COWI. Lately COWI has designed very large tunnels like the Great Belt East Tunnel,
Denmark, the Prevesa Tunnel, Greece and the Spree Tunnel in Berlin, Germany. Currently the Malmų City Tunnel is being designed by COWI in JV with VBB in Sweden. Major R&D work has been performed in house following the involvement in analysing the fires in the Great Belt tunnel and the Channel tunnel. COWI has designed more than 1500 bridges built throughout the world.