Media Focus | Successful Completion! The construction of the Yuntai Tongjiang River Special Bridge on the Zhenguang Expressway has made new progress

On March 6th, the main arch of the Yuntai Tongjiang River Special Bridge on the Zhenguang Expressway, constructed by the Bridge Company, was successfully joined together, marking a new stage in the construction of the main bridge's main structure and laying a solid foundation for the early completion and opening to traffic of the Tongguang section of the Zhenguang Expressway.

The Yuntai Tongjiang River Special Bridge is located in Pingchang County, Bazhong City, a revolutionary old area in Sichuan and Shaanxi provinces. It spans the Tongjiang River and connects Pingchang County and Tongjiang County. It is an important control project of the Zhenguang Expressway. The total length of the bridge is 974.5 meters, with four lanes in both directions. The main bridge is designed as an upper-bearing stiffened frame wrapped concrete arch bridge. The clear span of its main arch ring reaches 380 meters, and the rigid framework of the main arch ring consists of 69 sections, spanning the Tongjiang River. The bridge shape is magnificent and elegant.

It is worth mentioning that in order to facilitate the travel of people in the surrounding areas, a two-lane rural road has been added to one side of the bridge. The width of the bridge deck is 6.5 meters wider than that of a general expressway bridge, with a total width of 33 meters. After the bridge was opened to traffic, the driving time for residents on both sides to reach the opposite bank was shortened from one hour to two minutes, greatly facilitating the travel of people on both sides.

During the construction process, the construction team has always adhered to the management concept of "service + control", strictly managing quality, safety, environmental protection and water conservation. Each participating unit made precise arrangements and briefings in advance, and applied the "BIM+ intelligent monitoring" system to collect dynamic data from 60 key measurement points across the entire bridge, achieving digital control of the entire construction process. Through the dual control mechanism of "video surveillance + manual inspection", the intelligent monitoring and control system is applied in coordination with the safety monitoring of the main bridge, providing dual guarantees of "safety and quality" for the hoisting and closure. Eventually, the millimeter-level precise closure of the rigid frame of the bridge is achieved.

As of now, the 90-kilometer construction of the Tongguang section of the Zhenguang Expressway from Shiqiao to Hucheng has entered the final sprint stage. For the planned section to be opened to traffic in 2025, 91% of the subgrade works, 95% of the culvert works, and 99% of the tunnel works have been completed. A total of 81 kilometers of subgrade inspection have been completed, and the pavement construction is steadily advancing.

Extended reading

The Zhenba (Sichuan-Shaanxi border) to Guang 'an Expressway (Zhenguang Expressway) consists of the Sichuan-Wang section, the Wang-Tong section and the Tong-Guang section. The Wang-Tong section was opened to traffic on January 18, 2022. By the end of 2025, the Tongguang section of the Zhenguang Expressway will be 90 kilometers open to traffic.

The Zhenguang Expressway is one of the 13 vertical lines in the "Sichuan Province Expressway Network Layout Plan" (2022-2035), with a total length of 250.825 kilometers and a total investment of 48.9089 billion yuan. After its completion, it will connect the Bawan, Badar, Yingda, Nandaliang and Guang 'an Ring Expressways, which is of great significance for improving the regional road network, supporting the construction of the Chengdu-Chongqing Twin-City Economic Circle, developing tourism resources along the line and promoting regional development.