Crossing the Masan Bay, close to Busan, the second largest city in South Korea, is a magnificent 1,750-metre long cable stay suspension bridge. Bouygues Travaux Publics et Hyundai Engineering Corp are responsible for this concession operation, involving design, construction and operation for 30 years. During the entire period of construction, environmental issues were taken extremely seriously. To give one example, nets were installed to ensure that no construction waste fell into the water.