Major metropolitan transportation construction works usually employ underground tunneling methods and carry great risks. According to past experiences, the collapse of tunneling works always triggered a chain reaction of collateral damage and caused a considerable urban impact. Therefore, the damage control and restoration in the event of MRT tunneling failure have drawn great attention of researchers and industrial practitioners. This study used the tunnel collapse of the Kaohsiung MRT project as a research subject. The project was executed by a JV entity through an international joint venture between a Taiwanese and a Japanese construction firm. Conclusions are made based on the analysis of information collected from written documents and in-depth interviews with people involved in the remedial and restoration works. This study discusses the series of measures taken for the collapse event in question, and may serve as a reference to highlight the importance of disaster prevention for future.