CRT Line 6 (and the branch line branded as International Expo line) is the second heavy rail subway line in Chongqing, as well as being the longest rapid transit line in China, at 85.6 km long. It opened with provisional revenue service on September 28, 2012, and connects Nan'an, Yuzhong, and Jiangbei districts in central Chongqing. Opening timeline Stations (south to north) Operational Under Construction Covering a distance of 6.7 km, this extension starts from Liujiaping station and branches off towards Chongqing East Station, with 2 stations in between. The project began on 28 March 2022. Features Caijia Rail Transit Bridge The line crosses the Jialing River via Caijia Rail Transit Bridge (). Construction work began in October 2010 and it was completed in December 2013. References Railway lines opened in 2012 2012 establishments in China