Lots of folks seems to think the Baltimore Francis Scott Key Bridge Collapse was an unfortunate accident. Maybe it was. But lets look at some facts before conceding this. The distance between the 2 supports for the long span is 1,200 ft. Thats where the 150 ft wide ship was planning to pass through.
There's a few videos that explore the idea of charges going off at various points. The flashes may be electrical lines arcing but I wouldn't know.
If I was determined to take down the bridge I would want "insurance", ie, I'd want to rig the bridge with explosives.
Lara Logan made a big stink about what her intelligence informants told her: spoofing by Chinese cyber operatives. Have you heard about that?