高架正线“桥通”

Group 1 - The Cheng-Mei Line's Meishan section has successfully achieved "bridge connection," marking a significant milestone in the construction of the elevated railway [3] - The total length of the Meishan section is 32 kilometers, and the project will now transition to track laying and electromechanical installation [3][4] - The construction involved precise control during the installation of a 500-ton prefabricated box girder, with strict speed regulations during transportation and placement to ensure accuracy [3][4] Group 2 - The Cheng-Mei Line spans approximately 59.139 kilometers, with 13 stations planned; as of now, 11 stations have completed their main structures [4] - A total of 9 tunnel boring machines have completed 99% of the excavation, while 87% of the box girders have been prefabricated and 75% have been installed [4] - Track laying has reached 35% completion, and the next steps will include the installation of the contact network and signal systems [4]