The goal is to assess the material’s condition and determine whether similar structural elements elsewhere in Germany could be at risk of failure.
Heavy machinery was brought in as demolition crews began removing the severely damaged bridge, with one direction already dismantled and debris clearance underway. But the operation has become more than just a standard demolition. The remains of the structure are now part of a wider safety investigation.
Experts Focus on Steel Hidden Within the Structure
Among the rubble, bridge engineer Christoph Miller from Nuremberg’s municipal infrastructure department examined the exposed components closely. He noted that this level of scrutiny during demolition is unusual and explained that the focus was specifically on the bridge’s prestressing steel.
This material is now being sent to specialists in Berlin for a comprehensive analysis. According to Miller, prestressing steel poses a potential vulnerability. The issue gained national attention after a partial collapse of the Carolabrücke in Dresden in September 2024, which highlighted the risk of stress corrosion cracking. Such failures may occur without any visible surface damage.
Critical Areas Identified for Testing
To ensure an accurate picture of the steel’s durability, Miller selected samples from the most heavily stressed sections of the bridge—particularly areas at mid-span and above the support columns. These locations are key for understanding how the material performs under maximum load.
Miller reported that the same type of prestressing steel was used in nine additional bridges within Nuremberg. As a precaution, authorities have intensified inspections on these structures. The frequency of safety checks has already increased to twice annually, reflecting a more rigorous monitoring approach.
Findings Could Influence Bridge Assessments Nationwide
Preliminary results from the Berlin laboratories are expected within two to three months. The findings could have significant implications for evaluating the integrity and load-bearing capacity of similar bridges across Germany. Depending on the outcomes, there may be broader calls to reassess existing infrastructure that relies on this material.
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