Fangshan line
The Fangshan Line of the Beijing Subway () is a rapid transit line in western Beijing that runs from in Fangshan District north and east to in Fengtai District. The line is . It is mainly elevated, including 10 elevated stations and 6 underground stations. It allows residents of Beijing's western suburbs to connect to the rest of the Beijing Subway network. It was opened on December 30, 2010. An expansion of the line came on December 30, 2017, with the opening of the one-station western extension to . The line was extended further north from Guogongzhuang Station to  the southwest corner of the Third Ring Road. The extension has of new route tunnel all underground. The extension is fully underground. The northern extension opened on December 31, 2020. Route. The Fangshan Line starts at , just west of the East Yancun Bridge, where it interchanges with the Yanfang Line. Previously, it started at which is located at the intersection of Changhong Xi Lu and Suzhuang Dajie in the Liangxiang area of Fangshan District. The line makes four stops in Liangxiang including at the Fangshan Campus of the Beijing Institute of Technology. The line then heads north to the towns  of Guangyang and Changyang. After crossing the Yongding River, the Fangshan Line enters Fengtai District where the line makes two more stops, at Dabaotai near the Beijing World Park, and at Guogongzhuang, also the southern terminus of Line 9. The line then makes four stops further northeast connecting with Line 10 at and will connect with Line 16 at . Stations. List of stations from northeast to southwest: Future Development. Through service. In 2021 it was announced that there will be some through service between Line 9 and the Fangshan line. The operator is retrofitting the signal systems of both lines  to achieve this. Through service will start in the first half of 2022. Phase 3. The Phase 3 of the line will add 9.4 km, with 7 stations. The extension start from station on the Phase 2 of the Fangshan line and end at Jinrongjie station (now renamed as station, interchange to Line 19). A further extension to Lingjing Hutong station on Line 4 is also being considered. This project is the Phase 3 expansion of the Fangshan line. New interchange stations on this project includes station (interchange to Line 14, 16, Daxing Airport Express), Jinrongjie station (now renamed as  station, interchange to Line 19) and Lingjing Hutong station (interchange to Line 4). According to the information released on January 11, 2022, the extension is included in the "Beijing Rail Transit Phase III Construction Plan". History. Construction of the Fangshan Line was originally set to begin in 2012 but was moved up to April 1, 2009, to use stimulus funding provided by the government to counter the Financial Crisis of 2007-08. The names of Phase 1 stations was announced on March 25, 2010, as a 7-day publicity. On December 30, 2010, the line began operating from Suzhuang to  Dabaotai, but was not connected to any other line of the subway system. One year later, on December 31, 2011, the Dabaotai to section opened, linking the Fangshan Line with Line 9 and the rest of the subway network. On December 30, 2017, the line was extended one stop westward to Yancun Dong (E). On December 31, 2020, the line was extended north by 4 stations.