In addition to the nine lines currently in operation, there are at least ten lines with about 220 km of track length now under construction. Work on Subway Lines 14 and the Western Suburban Line is set to begin in 2010. Line 14 will run 42 km in length with a total of 22 stations. Line 14 is expected to open in 2012. Line 14 will run from the southwest to the northeast, begins in the west at Lugou Bridge; goes eastward to the Beijing’s southern Jinsong Station; and then north via Si Hui, Chaoyang Park and other stations, to end in Wangjing. Line 7 will run 27.3 km with 17 stations, including transfer stations to Line 9 at the Beijing West Railway Station.