On August 11, as the last cubic meter of concrete was slowly poured into the pile shaft, the pile foundation construction of the Haixing Grand Bridge on the Tianjin-Weifang High-Speed Railway was fully completed. This is the **bridge project within the Hebei Province construction section of the Tianjin-Weifang High-Speed Railway to complete pile foundation construction, laying a solid foundation for the bridge to fully transition to pile cap and pier body construction.

Construction site

　　The Tianjin-Weifang High-Speed Railway is an important component of the national high-speed "Eight Vertical and Eight Horizontal" backbone network, and also an important component of the Beijing-Shanghai auxiliary corridor and the coastal corridor. The project starts from Binhai Station on the extension line of the Beijing-Tianjin Intercity Railway, passes through Binhai New Area of Tianjin, Cangzhou City of Hebei Province, and Binzhou City, Dongying City, and Weifang City of Shandong Province, and ends at Weifang North Station on the Jinan-Qingdao High-Speed Railway, with a total length of 348.9 kilometers. The entire line has 10 stations: Binhai, Binhai East, Binhai South, Huanghua North, Haixing West, Wudi, Binzhou, Dongying South, Shouguang East, and Weifang North.

　　Among them, Section 4 in front of the station of the newly built Tianjin-Weifang High-Speed Railway, which is responsible for construction by Xiong'an High-Speed Railway Co., Ltd. and undertaken by China Railway 15th Bureau Group, is located within Haixing County. The line has a total length of 27.224 kilometers and a construction period of 58 months, mainly including the Haixing Grand Bridge, the Huanghua Grand Bridge, and the civil works of the Haixing West Station yard.

　　The Haixing Grand Bridge is one of the key projects of this section, with a total length of 13.801 kilometers. It spans Haixing County and extends to Wudi County, Shandong Province. The project crosses the Zhangwei New River, where the hydrological conditions of the river section are complex. During the pile foundation construction, the Tianjin-Weifang High-Speed Railway project department strengthened on-site dedicated supervision, optimized resource allocation, and carried out scientific and reasonable construction to ensure closed-loop connection among all processes such as pile foundation drilling, hole formation, hole inspection, rebar cage lowering, and concrete pouring, successfully completing the construction task of 3,576 pile foundations of the Haixing Grand Bridge.

　　Next, the Tianjin-Weifang High-Speed Railway project department will accelerate subsequent construction tasks such as pile caps, pier bodies, and girders.