Collapse of the Carola Bridge in Dresden Part 2: Investigations into the causes of the collapse and the consequences. On September 11, 2024, the partial collapse of the prestressed Carola Bridge in Dresden occurred without prior notice. The first part of the article presented the design and construction of the bridge, the measures for maintenance and renovation and the problem of stress corrosion cracking. In this second part, the comprehensive investigations into the cause of the collapse are described. An attempt is made to reconstruct the collapse process, and aspects of the further handling of bridges containing steel at risk of stress corrosion cracking are presented. In addition, the current monitoring is discussed, and an outlook on possible further action is given.