To replace the cables of the Galecopper Bridge, the structure first had to be strengthened and new anchor points installed. Works included replacing pylon bearings, reinforcing the lower 12 meters, adding stiffeners at the top, and installing new anchorage beams. The paper explores the challenges of modifying an existing bridge, such as weldability issues and design adjustments due to site constraints. Accurate steelwork installation was achieved using a 3D model, point clouds, and precise measurements.Mounting new anchor blocks beneath the deck required millimetre-level accuracy. Heavy lifting, sliding systems, and temporary supports enabled the safe installation of 5-ton components. Executed under an operational bridge, the project demanded high safety standards and close coordination. The paper details the engineering and teamwork that enabled success in a complex, confined environment.
Grieving et al. (Wed,) studied this question.