The Anqing Yangtze River Railway Bridge is a cable-stayed bridge spanning the Yangtze River near Anqing, Anhui, China. Construction of the bridge began on March 20, 2009, and was completed in December 2015, with a total cost of 1.43 billion yuan.[1] The bridge has a main span of 580 metres (1,900 ft) and a total length of 2,997 metres (9,833 ft),[2] making it the longest cable-stayed railway bridge in the world. The bridge carries four railway tracks;[3] two serve the high-speed Nanjing–Anqing Intercity Railway line, and the other two serve the Lu'an-Anqing line when it is completed.[citation needed] The completion of the bridge significantly reduced the rail travel time between Nanjing and Anqing from eight hours to just 90 minutes.[4]