At 9:58 on July 5th, the Bingcaowan-Tanjiajing section K80+116.603 on the Qianwu Line was full of voices and firecrackers rang. The Qianwu Second Line Project Department of China Railway 21st Bureau No. 2 Company succeeded in the Dajing River Middle Bridge The erection of the first piece of T-beam marked the official start of the laying and erection construction of the second line project department of the second company's Qianwu additional construction.

According to reports, the Dajing River Middle Bridge is located at K80+116.603 between Bingcaowan and Tanjiajing on the Ganwu Line. The bridge is parallel to the business line with a line spacing of 11.7 meters. The starting and ending mileage pile number is K80+086.33—K80+148.075, and the length of the bridge is 61.745 meters, which is located at -2.2%. On the ramp and straight line, the hole span is arranged as 3-16m prestressed concrete T-beam. Since the catenary column of the Bingcaowan-Tanjiajing section is located on the left side of the line, it has little interference with the construction of the second line. The successful erection of 3-16m simply supported T-beams of the Dajing River Middle Bridge has created favorable conditions for the construction of the next track project. In addition, the subgrade attachment, track laying, and bridge erection of the Qianwu Line 2 project of China Railway 21st Bureau fully "flowered" and entered the fast lane of project construction.