April 6 morning, South Sichuan Inter-City Railway Neijiang Sanyuan Tuojiang Bridge officially closed. This bridge is a continuous beam arch with the largest single-aperture span in the South Sichuan Inter-city railway, and is also the most critical controlling key project of the entire South Sichuan Inter-city Railway. The next step will be steel pipe arch installation and bridge deck system construction. The whole project is expected to be completed by the end of 2020.