I haven't yet seen any articles that describe HOW the bridge sways.
Left-right, up-down, twisting, etc..
That is a key portion of analysis that would help us predict the future of the bridge.
As I remember my Physics 102 breakdown of the Tacoma Narrows collapse, the biggest factor was the speed and force of the wind.
Essentially, the downwind side of the bridge had wind eddies which created a low pressure "pull" on the bridge. As the wind speed increased, the eddies would become unstable and "fall" off the edge of the bridge, swirling off down wind. The persistence of the wind would quickly create new eddies, recreating the pull. This had the effect of repeatedly plucking the bridge like a guitar string.
Most of the time, the windspeed was low enough that the eddies were reasonably stable. But the end came when the wind reached a speed that "plucked" the bridge in harmony with its resonant frequency.
You don't have to be Niikola Tesla to figure out what had to happen as a result of that.
So my question is, does anyone know what kind of swaying the bridge is doing?
Left and right is not so bad.
Up and down suggests problems in the future.
If it is twisting, I'd stay off it and get my camera ready to document the show.