World's First Four Railway Track Bridge Under Construction In Wuhan

WUHAN, CHINA - MARCH 7: (CHINA OUT) Migrant workers lay the sleepers at the Tianxingzhou Yangtze River Bridge under construction on March 7, 2009 in Wuhan of Hubei Province, China. The Tianxingzhou Yangtze River Bridge is the world's first bridge with four railway tracks spanning 504 meters (about 1,653 feet) and designed for a load capacity of 20,000 tons. The main part of the cable-stayed bridge has been completed, making Wuhan a leading railway hub following Beijing, Shanghai and Guangzhou. (Photo by China Photos/Getty Images)