Initial structural health monitoring of the nibelungen bridge in worms. The Nibelungen Bridge in Worms (NBW), constructed in 1953, serves as a pilot structure for the development and evaluation of innovative concepts in bridge preservation. Within the DFG Priority Program “Hundert plus,” a monitoring system was installed in 2023 to continuously record environmental conditions and structural responses in a selected pilot area. The primary objective is to establish a comprehensive database for condition assessment and lifecycle management of the bridge. This paper presents the monitoring concept, the implementation of the measurement system, and the user-oriented provision of data. Furthermore, two approaches for condition-based assessment are introduced: (1) a condition indicator for the qualitative assessment of corrosion risk in internal tendons and reinforcement based on condensation events within the box girder, and (2) a model-based method for realistic structural safety evaluation using a finite element model adapted to the actual structural behavior. Both approaches demonstrate the potential of structural health monitoring for lifecycle management of bridges, but also highlight the need for further in-depth validation to enable robust assessments.