China’s massive bridge linking Hong Kong, Macau and Zhuhai is ready

China's ambitious engineering feat of linking Macau, Hong Kong and the mainland city of Zhuhai is about to become a reality. The crossing, built from 400,000 tonnes of steel, spans 55 kilometres across the Pearl River Delta with a 22.9-kilometre bridge over the sea (the world's sixth-longest) and a 6.7km tunnel.