Major construction site at the Schlossplatz tunnel: traffic jams and renovation from July!
Göppingen is planning extensive renovations to the Schlossplatz Tunnel from July 2025 to repair damage and increase safety.

Major construction site at the Schlossplatz tunnel: traffic jams and renovation from July!
The city of Karlsruhe is facing a significant challenge: comprehensive renovation work on the Schlossplatz Tunnel will begin in July 2025. Loud ka-news.de The damage to the road is significant. Ruts and cracks are just some of the problems exacerbated by road salt. These not only lead to contamination of the water that enters the tunnel, but also endanger the stability of the entire structure.
The renovation measures include renewing the road surface and installing new seals under the asphalt. In addition, cracks and joints will be repaired and new waterproofing and a protective layer for walls and supports will be installed. The work, which is expected to cost a total of 4.5 million euros, was already presented to the construction committee on October 5, 2023 and to the main committee on October 17, 2023. On May 27, 2023, the local council finally commissioned the company Leonhard Weiss GmbH & Co.KG from Göppingen to carry out the work.
Detours and traffic disruptions
Detours will be in place for drivers during construction. The work is planned until the end of 2026, which will pose a significant challenge for road users. Signs and barriers will be put up to ensure safety during the construction phase.
At the same time, the Edeltrud Tunnel is in the final stages of its modernization, which has also proven to be complex. Hundreds of meters of new cables were laid in the technical room between the Edeltrudtunnel and Alb in order to replace the outdated technology with modern systems. This work is going on loudly karlsruhe.de in full swing. Mayor Daniel Fluhrer and civil engineering department head Martin Kissel found out about the progress on site.
Important aspects of the renovation in the Edeltrud Tunnel include updating lighting, ventilation and emergency exits. Traffic in the tunnel will remain restricted until spring, but the speed restriction will be lifted once the work is completed.
The importance of tunnel construction in Germany
Tunnel construction projects are also of central importance in other cities. In Berlin, for example, the infrastructure is characterized by numerous tunnels that have to meet various requirements. How berlin.de emphasizes, the task of the responsible authorities is, among other things, the maintenance of buildings and the planning of new tunnel construction projects.
It is crucial for Karlsruhe and other cities to carry out infrastructure projects such as the renovation of the Schlossplatz Tunnel and the modernization of the Edeltrud Tunnel. This not only ensures the safety of road users, but also supports the long-term functionality of the transport infrastructure.