ABSTRACT
This paper deals with the replacement of existing highway bridges by the example of two bridges over the river Rhine in Duisburg-Neuenkamp and in Leverkusen. Both mainly welded cable stayed bridges are under traffic since circa 1970–1965 and are constructed as welded steel girder bridges with an orthotropic bridge deck. Recent damage to the steel structure of the bridge deck reduced the service lives of both bridges significantly, therefore, the bridges needed to be replaced within a short time, while maintaining the traffic during all construction stages. The replacement strategies and the design requirements are described in the following.
