China's Qingdao bridge, has been recorded as the world's longest bridge over water.Qingdao bridge opened to the public yesterday after four years of construction.The bridge is over 26 miles long and carries its eight lanes of traffic over the Qingdao bay. Motorists will be able to travel from downtown Qingdao to the Huangdao city centre in about 20 minutes, saving themselves a 40-minute journey around the bay's edge.