2023 Yellowstone River train derailment

The collapse occurred around 6 a.m. local time on June 24, 2023. The cause of the collapse is under investigation, but some experts have suggested that repeated years of heavy river flows may have eroded the river bottom and weakened the bridge structure. The adjacent Twin Bridges Road Bridge constructed in 1931 was demolished in 2021 after decades of riverbed bridge scour had undermined its concrete piers and the Montana Department of Transportation had determined it was in danger of collapse. The river was swollen with recent heavy rains at the time of the derailment. ==Aftermath==

The collapse triggered an emergency response from local, state and federal agencies. Officials shut down drinking water intakes downstream while they evaluated the danger after the derailment. The Yellowstone County Disaster and Emergency Services asked residents to conserve water and implemented precautions at water treatment plants, irrigation districts and industrial companies. The Montana Department of Environmental Quality said it was monitoring the water quality and potential impacts to fish and wildlife. An Associated Press reporter witnessed a yellow substance coming out of some of the tank cars. The collapse also took out a fiber-optic cable providing internet service to many customers in the state, including the high-speed provider Global Net. The company said it was working to restore service as soon as possible. Montana Gov. Greg Gianforte tweeted that he was monitoring the situation and that the state was standing by to support MRL and county officials. MRL said it was committed to addressing any potential impacts and working to understand the reasons behind the crash. ==References==