On March 26, 2024, the main spans and the three nearest northeast approach spans of the Francis Scott Key Bridge across the Patapsco River in the Baltimore metropolitan area of Maryland, United States, collapsed after one of the bridge piers was struck by the container ship Dali, which had suffered catastrophic power outages that impaired its control systems. Six members of a maintenance crew working on the roadway were killed, one was rescued from the river, and an inspector was rescued from the remaining structure.