Bangkok authorities were still searching through the wreckage of an under-construction expressway bridge on March 15, 2025 after a collapse in the city’s Chom Thong district killed seven people, injured 16 others, and left about 30 people believed trapped beneath the debris.
The collapse hit the Dao Khanong Expressway Bridge project just after 1.48am, according to the reporting available in the packet. The structure fell onto Rama II Road near the Bang Mod area, severing a major route and blocking traffic through the surrounding district. The source account says emergency workers arrived quickly and that officials from the Bangkok Metropolitan Administration’s disaster department, police, and a rescue foundation were already on scene when responders reached the area.
The scale of the damage made the response slower and more cautious than an ordinary rescue. The source says crews feared further collapse because the structure remained unstable, so the search was being carried out methodically. Specialized tools and search dogs were brought in to help locate survivors and recover victims from under the debris.
The incident hit a construction zone that was part of the Rama III–Dao Khanong Expressway project. The same source says a concrete beam structure from the new bridge came down onto the existing expressway bridge located about 200 meters from the toll booth. That left the road closed and badly disrupted access to nearby districts including Bang Mod, Bang Khun Thian, and Chom Thong.
The death toll moved quickly as the rescue scene was secured. Initial reports from the source packet described fatalities and injuries, and later updates raised the confirmed number of dead to seven with 16 injured and roughly 30 still missing. The piece also notes that the collapse came on a route already under strain and that the closure affected adjoining roads, including Chom Thong Burana Road, which was blocked in all lanes.
The packet does not provide a cause for the failure, and it does not include any official conclusion on whether construction error, material failure, or some other factor triggered the collapse. It does, however, say investigators were still working to determine what happened.
For Bangkok, the immediate priority on March 15 was rescue and accountancy: who had been pulled clear, who was in hospital, and who remained missing. The source material available here does not identify the dead or injured, and it does not say how many of the missing might still have been under the structure by the time of the latest update.
The collapse adds to pressure on a major infrastructure corridor in the Thai capital and leaves the surrounding district facing a prolonged recovery effort. Emergency crews were still working the site as the reporting in the packet was updated, with authorities treating the area as dangerous and unstable.
