Municipal Bridge Steel Structure Project
General Contractor: China Railway 21st Bureau Group Fifth Engineering Construction Co., Ltd.
Designer: Shanghai Urban Construction Design and Research Institute (Group) Co., Ltd.
Project Overview: This project involves the demolition and reconstruction of the Donggang Interchange in Lanzhou. The main bridge features a continuous steel box girder with a span of 23 meters + 42 meters + 35 meters + 30 meters, a standard deck width of 25.5 meters, a beam height of 1.8 meters, and a total weight of 1,050 tons. Construction is carried out using the integral jacking and sliding method, with an overall jacking length of 51 meters.
