On April 23, 2019, big bridge of the Yangtse River of white sanded a small bay in a river retires ceremony and " I and railroad 70 years " informal discussion, be versed in be held inside courtyard of work area of examination of road of bridge of Wu Duan Xiaona sea in Chongqing of company of group of bureau of Chinese railroad Chengdu, 50 time are participated in up to now build, the member that conserve and guard cross the Laodang of big bridge, old advanced, old key member in all 56 people assemble in, witness this historic momently. Big bridge of the Yangtse River of white sanded a small bay in a river big bridge of the Yangtse River of name small Nanhai, it is the big bridge of the first the Yangtse River of hill city Chongqing, also be 10 thousand lis of the Yangtse River the 2nd bridge, be located in area of Chongqing big crossing Ou Luohuang presses down white Sha Tuo and Jiang Jin between, for bridge of railway of a crewel. Big bridge is full-length 820 meters, in all 16 aperture, the biggest 80m that cross path. In September 1958 start working, built crewel pier, except 4 cross 80m to fall bear bridge of type steel joist presses crewel erect outside, the others each aperture erect upriver line (namely plain Guizhou line) steel Ban bridge, on November 10, 1959 complete, be well versed in of the whole line of Sui Chuanqian line is formal on July 8, 1965 be open to traffic, formal on October 1, 1965 operation. Especially big bridge is in the Yangtse River of new white sanded a small bay in a river old bridge controls the position 100 meters to span downstream the Yangtse River, make an appointment with 5.3 kilometers endlong, play bridge of railway of two 6 lines to go up, superstratum is special railway line of passenger traffic of 4 lines railroad, as Yu Guitie distance have transport service threw operation formally on January 25, 2018. This bridge is dimensions of all fronts of Yu Guitie road the control sex project with the biggest, most sophisticated technology, it is joist of steel of railroad of on the world first 6 lines Liang Xie plays the bridge, also be every delay rice load to measure the biggest bridge on the world, also be joist of steel of railroad of on the world first double deck at the same time Liang Xie plays the bridge. Optimize ceaselessly as what Chongqing railroad carries, station of Luo semi-annular jade pendant changed an end on April 23, circuitry of lower level of big bridge of the Yangtse River of new white sanded a small bay in a river is in station of Luo semi-annular jade pendant and UniCom of plain Guizhou line, since 24 days, all train the Yangtse River of over or across of by new bridge, old bridge retires formally. Optimize ceaselessly as what Chongqing railroad carries, station of Luo semi-annular jade pendant changed an end on April 23, circuitry of lower level of big bridge of the Yangtse River of new white sanded a small bay in a river is in station of Luo semi-annular jade pendant and UniCom of plain Guizhou line, since 24 days, all train the Yangtse River of over or across of by new bridge, old bridge retires formally. In September 1958 start working, built crewel pier, except 4 cross 80m to fall bear bridge of type steel joist presses crewel erect outside, the others each aperture erect upriver line (namely plain Guizhou line) steel Ban bridge, on November 10, 1959 complete, be well versed in of the whole line of Sui Chuanqian line is formal on July 8, 1965 be open to traffic, formal on October 1, 1965 operation.