The existing around 1,500 m long Rader High Bridge near Rendsburg crosses the Borgstedter Enge as a 15-span steel bridge with span widths between around 76 and 221 m, and the Kiel Canal with a clear height of 42 m/clear width of 216m. It is thus Germany’s second largest steel road bridge. The bridge was completed in 1972 and plays a central role on the motorway A7 with traffic coming from and going to Denmark and Scandinavia.
Due to deficits of the load-bearing capacity the structure only has remaining service life of 11 years and has to be replaced by a new bridge.
The new construction comprises two new superstructures per direction, and traffic will be continued during construction. The new alignment is implemented with axle offset in the structure’s area and the bridge’s cross section is widened.
One particularity is the integrated planning between traffic installations and bridge construction.
Services: project planning and structural engineering of engineering structures: preliminary and draft design, preparation of tenders; elaboration of construction management concept; detailed planning of construction phases.
Der Bauingenieur 48(1973) Heft 12