<p>This study investigates the extreme rainstorm that struck Beijing, China on July 29, 2023, causing damage to transportation infrastructure in Mentougou District. The purpose of this study is to provide an overview of the event, highlighting the causes and adverse consequences of this extreme disaster. In addition, the study analyzes and discusses the emergency response and reconstruction planning, aiming to draw lessons and provide recommendations for mitigating future rainstorm-induced damage to transportation infrastructure. The work presented is based on an integration of information from newspapers, government documents, and research literature, as well as data and interviews collected during multiple field visits to the affected areas. The damage to transportation infrastructure hampered the implemented emergency response operations. The disruption of transportation during the rainstorm, when many residents were being urgently evacuated, exposed more residents to greater danger. They were eventually trapped in isolated areas, and supply shortages indirectly affected them. Notably, the study also found that multiple instances of transportation damage have occurred in the same area since the extreme rainstorm, highlighting the need to strengthen preparation and develop more effective prevention strategies. Disaster preparedness efforts should be strengthened, specifically considering the potential for natural disasters and related technical scenarios, especially regarding secondary disaster chains triggered by rainstorms. Due to climate change leading to unprecedented extreme rainstorms, all regions of the world are experiencing more intense rainfall events. Governments, therefore, should consider the growing potential for compound disasters associated with extreme weather events when planning and implementing climate change adaptation strategies.</p>