I think this was a pure constructor screwup.
See this video animation of the bridge:
This shows a cable-stayed bridge design. The upper stays were not in place, yet they had no temporary supports at the midpoint of the bridge until that tower on the one side was constructed and the cable stays in place. There was nothing providing necessary up force, and the bridge was simply not able to support itself.
I don’t think this had a thing to do with tweaking the tension on the post-tensioning cables/tendons. Or if it did, that was not the root of the problem.
Any bets that the replacement bridge will be a much simpler design?
My apologies if this has already been posted.
What the hell were they thinking? Someone needs to go to jail.