China opened Thursday, June 30, 2011, the world’s longest cross-sea bridge links China’s eastern port city of Qingdao to an offshore island, Huangdao. A sign that reads: “Shandong Highway Corp. invests to operate Shangdong Highway Jiaozhou Bay Bridge” is seen at Qingdao Jiaozhou Bay Bridge in Qingdao, Shangdong province June 27, 2011. It is the world’s longest sea bridge spanning Jiaozhou Bay of Qingdao City, June 30, 2011. The bridge is 36 km (22 miles) long. CCTV says the bridge has passed construction appraisals and an undersea tunnel opened to traffic is now open. The bridge supported by more than 5000 pillars was built in four years. Guinness World Records says the previous record holder for a bridge over water is the Lake Pontchartrain Causeway in Louisiana. The Chinese bridge is more than 4km longer.