Workers mend cracks under a bridge in Haikou, on Aug 8, 2013, which was open to traffic in 2007 but have developed more than 200 cracks, each wider than 0.25 millimeters, due to too many overloaded vehicles passing through. The city authority said the bridge is safe to use, and the repairs will be finished in three months. [Photo by Luo Yunfei/China News Service]