On August 27, with the completion of the final concrete pour, the cable tower of the Lixianjiang Grand Bridge on the Mengla-Lüchun Expressway—constructed by China Railway Development & Investment and built by China Railway No. 2 Engineering Group—was successfully capped. The bridge has now fully entered the cantilever assembly construction stage for its steel girders, laying a solid foundation for the smooth opening of the entire line and accumulating valuable experience for the construction of high-pier, long-span bridges in deep-cut river valley mountainous areas across the country.

The Lixianjiang Grand Bridge has a total length of 1,112 meters and is a (190+420+190)-meter three-span steel-concrete composite girder vase-shaped double-tower cable-stayed bridge. The cable tower capped this time is 250.18 meters high. Among bridges of the same type in the province, the bridge ranks first in cable tower height and first in main span, and is the No. 1 control project of the entire Mengla-Lüchun Expressway.

The Lixianjiang Grand Bridge is located in a deep-cut river valley area with harsh natural conditions. In addition, the bridge area has heavy fog and a long rainy season, with about 200 rainy days per year. Road transport conditions are extremely poor, raw materials are unevenly distributed and far from the site, and construction organization is difficult. Since the start of construction, the project department has strengthened Party building guidance, given full play to the vanguard and exemplary role of Party members, and carried out in depth the Yunnan Province labor competition of "connecting all routes and achieving interconnection," using a series of combined measures to efficiently and high-quality promote the bridge construction. Based on actual site conditions, resources have been organized efficiently to efficiently advance construction.

Guided by technological innovation, the project department specially established the "Mengla-Lüchun Cutting-edge Technology Research Group," vigorously researching and applying multiple technological achievements such as C55 manufactured-sand high-grade high-performance pumped concrete construction technology for high cable towers, coordinated construction technology for tower columns and steel girders, and high-position incremental launching construction technology for trough-type composite girders. Various technological innovation achievements of the project have successively won multiple honors, including the second prize of QC achievements from the China Construction Industry Association and provincial-level QC achievements from Yunnan and Sichuan.

The Mengla-Lüchun Expressway is an important component of Yunnan Province's expressway network, connecting the border prefectures of Honghe, Pu'er, and Xishuangbanna and serving the construction of the international port cities of Mohan and Mengkang in China. Once completed, it will play an important economic construction role in "linking the province's southwestern border areas and radiating both inside and outside the national gateway."