On June 14, the Mozhai Wujiang River Bridge on the Chongqing-Hunan secondary expressway, invested in by China Railway Construction Kunlun Investment Group Co., Ltd. under China Railway Construction Corporation Limited (CRCC), designed by China Railway First Survey and Design Institute Group Co., Ltd., and constructed by CRCC Harbour & Channel Engineering Bureau Group Co., Ltd., was completed.
It marks the full connection of the Pengshui to Youyang section of the Chongqing-Hunan secondary expressway.
The Mozhai Wujiang River Bridge, the first high-pier low-pylon cable-stayed bridge in Asia, is located in Pengshui county, Southwest China's Chongqing municipality. Spanning the Wujiang River and crossing the G211 National Highway, the bridge extends 708 meters in length. It boasts a maximum pier height of 216 meters and a pylon height of 44 meters, with the top of the pylon standing approximately 320 meters above the river's surface. This bridge is characterized by its exceptionally high piers and large cross-sections, situated in the steep, V-shaped gorge of the Wujiang River, which made its design and construction a formidable challenge.
The bridge has utilized approximately 150,000 cubic meters of concrete and around 22,000 tons of steel bars. The construction was divided into 37 segments, each 5 to 6 meters in length, completed segment by segment in multiple cycles. The project team custom-designed a super high-pier, large-section, heavy-duty fully-enclosed intelligent hydraulic climbing formwork system. This system seamlessly integrates displacement values, differential displacement values, hydraulic system pressure, and wind speed into the control cabinet's display screen. Construction personnel can remotely monitor the formwork's operational data and real-time status, completing the entire operation with fingertip control. With the aid of this intelligent and digital system, the bridge can "grow" over one meter per day, enhancing efficiency by 25 percent compared to that of traditional manual mechanical systems.
Currently, the main structures of the Pengshui to Youyang section of the Chongqing-Hunan secondary expressway, including 45 bridges, 26 tunnels, and seven interchanges, have been completed. The construction of road surfaces, electrical systems, traffic safety measures, and building projects is being expedited.
Upon completion, the Chongqing-Hunan secondary expressway will significantly reduce the travel distance between the southeastern Chongqing region and the Chongqing metropolitan economic circle, fostering closer connections between the districts and counties in southeastern Chongqing. It will effectively alleviate congestion on the existing Chongqing-Hunan expressway and play a pivotal role in developing tourism resources along the route. Its integration of transportation and tourism, and driving, will sustain rapid economic and social development in the region.
Construction of the Mozhai Wujiang River Bridge is completed on June 14 in southwest China's Chongqing. [Photo/sasac.gov.cn]
Spanning the Wujiang River and crossing the G211 National Highway, the bridge extends 708 meters in length. [Photo/sasac.gov.cn]
The bridge has utilized approximately 150,000 cubic meters of concrete and around 22,000 tons of steel bars. [Photo/sasac.gov.cn]
The main structures of the Pengshui to Youyang section of the Chongqing-Hunan secondary expressway are completed. [Photo/sasac.gov.cn]
(Executive editor: Zhu Zeya)
