en.Wedoany.com Reported - On June 15, 2026, the Shiziyang Bridge, the world's first double-deck suspension bridge with a main span exceeding 2,000 meters, successfully completed the hoisting and measurement of the first set of main saddles on its main tower at the construction site in the Pearl River Estuary, Guangdong Province, China. This marks the official transition of the bridge construction into a critical phase of process conversion, laying the foundation for subsequent superstructure works such as pilot cable crossing and catwalk erection.
The Shiziyang Bridge is a key control project of the Shiziyang Passage, connecting Nansha District in Guangzhou with Dongguan City. The bridge adopts a double-deck steel truss girder suspension bridge design, with a main span of 2,180 meters and a total of 16 lanes across two decks (8 lanes on the upper deck and 8 lanes on the lower deck), making it the world's largest-span and highest-lane-count double-deck suspension bridge. The main saddle is a critical load-bearing and guiding component of the suspension bridge's superstructure, installed atop the main tower to support and secure the main cable, evenly transferring the immense tensile force of the main cable to the tower body. The successful hoisting and precise positioning of the first set of main saddles marks the starting point for the superstructure construction, with its installation accuracy directly affecting the subsequent main cable alignment and the overall stress state of the bridge.
According to the project contractor, CCCC Second Highway Engineering Co., Ltd. (referred to as "CCCC-SHEC"), each main saddle hoisted in this operation weighs over 200 tons, utilizing large tower cranes in conjunction with precision measurement systems for high-altitude positioning. The construction team overcame challenges posed by the complex wind field of the Pearl River Estuary and the difficulties of high-altitude work, employing digital pre-assembly and real-time monitoring technologies to control installation errors within millimeter-level precision. In the next phase, the project will sequentially complete the hoisting of the remaining main saddles and commence the pilot cable crossing operation—using boats or drones to pull the pilot cable from the south bank to the north bank, followed by the gradual erection of catwalks (temporary construction pathways) and the main cable.
The Shiziyang Passage is a vital component of the national expressway network, with a total length of approximately 35 kilometers. Once completed, it will effectively alleviate traffic pressure on both sides of the Pearl River Estuary and promote infrastructure connectivity in the Guangdong-Hong Kong-Macao Greater Bay Area. As its core project, the Shiziyang Bridge is scheduled to open to traffic in 2028. The successful hoisting of the first set of main saddles has validated the feasibility of the superstructure construction plan for an ultra-large suspension bridge, providing a technical reference for similar projects.
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