SoylentNews

The root cause of the collapse of Baltimore’s Francis Scott Key Bridge when hit by container ship Dali has been identified. It was the wrong placement, by a few millimeters, of the label on one wire. As usual, the National Transportation Safety Board has taken their time and done a detailed investigation--summarized in this short video
      https://www.youtube.com/watch?app=desktop&v=bu7PJoxaMZg [youtube.com]

tl;dr - the wire was not completely inserted into a terminal block, due to the wire label wrapped over the ferrule. Over time the connection became intermittent and eventually shut off power on the ship...after which it drifted into the bridge. Of course there were additional contributing problems as well.

The YT video comments include some more interesting details.

Original Submission