Sichuan Province's first 350-400 km/h high-speed railway (ultra-high-speed subway) will be officially opened to traffic in 2024.
On March 26, 2023, the erection of bridges on the entire line of the Chengdu-Ziyi high-speed railway was completed. On May 29, the Chengdu Ziyi high-speed railway introduced into the Chengdu East Railway Station station renovation project was officially launched. On June 20, the Chengdu Ziyi high-speed railway signal was successfully connected to Chengdu East Railway Station. On July 10, the Chengziyi high-speed railway completed the track laying of the whole line. On July 24, the Tianfu Airport section of the Chengdu-Ziyi high-speed railway (including Tianfu Airport Station) was completed and officially entered the static acceptance stage. On August 15, the main project of 9 new stations on the whole line of Chengdu-Ziyi high-speed railway was completed. On August 21, the 56002 cold slip test vehicle started from Chengdu East Railway Station, marking the official opening of the cold slip test of the Chengdu Ziyi high-speed rail catenary project, providing a strong guarantee for the next stage of catenary power transmission, thermal slip test and joint commissioning and joint test, and the whole line will be completed and opened to traffic within the year. At 8 o'clock on September 21, with the 57,631 inspection vehicles leaving Chengdu East Railway Station, it marked the start of the joint commissioning and joint test of the new Chengdu-Yibin high-speed railway into the critical stage of project acceptance, laying a solid foundation for the early opening of the whole line. In October, the Chengdu-Yibin high-speed railway carried out the highest test speed level speed speed test on the basis of the joint debugging and joint test of the previous step-by-step speed-up test, and the test train successfully ran out of the test target speed value of 385 kilometers per hour, and achieved the phased goal of joint debugging and joint test. At 8:36 on November 19, the test train 55301 departed from Chengdu East Railway Station, marking the successful completion of the joint commissioning and joint test of the new Dudu-Yibin high-speed railway, and it has officially entered the operation test stage.
There are 11 stations in Chengdu-Ziyi high-speed railway: Chengdu East Railway Station, Tianfu Station, Sanchahu Station, Tianfu Airport Station, Ziyang West Station, Zizhong West Station, Weiyuan Station, Zigong Station, Yantan Station, Nanxi North Station, and Yibin East Station. The line goes to Chengdu to Zigong section of the Chengyi high-speed railway from Chengdu East Railway Station and ends at Zigong Station, passing through Chengdu Chenghua District, Jinjiang District, High-tech Zone, Tianfu New District, Jianyang City, Yanjiang District of Ziyang City, Zizhong County and Weiyuan County of Neijiang City, Da'an District and Yantan District of Zigong City. The total length of the main line is 175736 km, 89 new bridges on the main line039 km 126, 43 new double-track tunnelsThere are 17 bridges and tunnels in 814 km, and the ratio of bridges and tunnels is 756%。
The Chengdu-Ziyi high-speed railway is an important part of the national eight-vertical and eight-horizontal high-speed railway network, and is the first southbound high-speed railway corridor in Sichuan with a speed of 350-400 kilometers per hour.