The Mianyang-Suining-Neijiang Intercity Railway has a design speed of 250 km/h. It starts at the Anlan Station of the Chenglan Railway, passes through Mianyang City, Santai, Suining Shehong, Chuanshan, Anju, and Ziyang Anyue to Neijiang to connect Neiziyi railway whose main line is 299.1 kilometers in length.