Doesn’t appear to be any significant steel or concrete failure to me. More a dynamic engineering deficiency.
At the moment, we are being clobbered by a cold front after having had crazy warm temperatures. Perhaps some things were contracting faster than others, and at a rate and in an uneven way that had not been anticipated.
Road construction in somewhat extreme circumstances is challenging.
This should be a big black eye to the liberals.
Looks as if the support cables shrank due to the cold. Maybe an inherent drawback in a cable stayed bridge in the cold.