ABSTRACT
ABSTRACT: The Ohnaruto Bridge (Figure 1) is a suspension bridge with the main span of 876 meters, completed in 1985. Due to the severe corrosive condition, the overall recoating for the truss-type stiffening girders and the truss-type main towers was carried out from 1998 to 2005. Especially, the automatic coating method was developed and applied to the main towers of the Ohnaruto Bridge for the first time in the existing long-span bridges. This paper describes the planning and working of overall recoating for the stiffening girders and the main towers of the Ohnaruto Bridge, considering the surrounding natural condition, the working ability/safety and the coating quality/efficiency.
