I think someone noted the lack of spreader plates in use when the bridge was being transported… that too could have been a factor since plates tend to spread the amount of stress on the supported structure out. And you have to tension the rods properly to account for the redistributed stress… if the rods were tensioned under the assumption of there being spreader plates when there aren’t any, then things could have gone wrong.
That whole bridge seems like a ridiculous mess. I can’t believe they’d go to all the trouble of building decorative cable stays and then having those cables rip up the concrete because the rods used to attach the cables to the bridge are underspecced. Then again, there have been a lot of engineering boondoggles with regard to cable-stayed bridges, like giant chunks of ice forming on cables and falling to the bridge deck…
