At the invitation of Autobahn GmbH, Westphalia branch, Netphen branch, this year's bridge construction excursion took place on 08.07.2022. The destination was the Eisern viaduct south of Siegen. The participants were informed in detail about the planning and execution of the structure under construction by Ms. Jennifer Johannsen from Autobahn GmbH.
The existing Eisern viaduct dates back to 1967 and, alongside the Rinsdorf and Rälsbach viaducts, is the third and last viaduct between the Siegen-Süd and Wilnsdorf junctions to be demolished and rebuilt. The six-lane expansion of the A45 will then complete the construction work between the Siegen-Süd and Wilnsdorf junctions. The Eisern viaduct has a length of 327 meters and is 50.6 meters high. In 2024, highway traffic is expected to flow over the six-lane bridge.
The photo on the left shows the new prestressed concrete superstructure, which is being built on launching scaffolding. The photo on the right shows the interior of the single-cell box girder with the external tendons not yet stressed.
