This year's bridge construction excursion took place on 21.06.2024 at the invitation of Autobahn GmbH, Westphalia branch, Netphen branch office. The destination was the Eisern and Rinsdorf viaducts south of Siegen, which are being replaced by new structures as part of the A45 expansion project. The participants (left photo, Eisern viaduct in the background) were welcomed on site by Mr. Samuel Freund, head of the Netphen branch office, as well as Ms. Jennifer Johannsen and Mr. Michael Stahl, who provided comprehensive information on the process and current status of the construction project.
The northern sections of the replacement structures for both bridges have already been completed and are open to traffic. Work on the southern substructures is also well advanced. On the Eisern viaduct, the penultimate section of the superstructure (single-cell prestressed concrete box girder) was recently concreted on launching scaffolding (left photo). At the Rinsdorf viaduct (right photo), the final sections of the reinforced concrete deck slab are currently being laid on the steel trough of the superstructure (hollow box girder in steel composite construction), which was built using the incremental launching method. In spring 2025, the northern section of the Rinsdorf viaduct is due to be cross-pushed.
