The design was supposed to be bridge supported by hanging on cables from the central support.
Idiets put up one half of the bridge, made of concrete, made to hang, but not supported over the span.
It collapsed under own weight. They needed to support it while the other half and center support tower is raised and cables ran to the anchor points on the bridges.
PC smart ass engineering, funded by tax dollars and kickbacks to politicians.
FRee advice from FRengineer.