We have some structural models that our structural designer created using CADWorx structure, they are fine in the drawing but when they are opened in Navisworks they zoom way out. It appears that there is something connecting the plate steel in these models that make it zoom to 0,0,0
Does anyone know what is causing this or how to fix it?

There's something sitting at the WCS origin, something with geometry. Use the selection tree window in Navisworks to identify what it is.

It's not necessarily a CADWorx item; it could be an unsupported Civil3D object, for example - those usually come up as a text string at the origin.

I have used the selection tree and it shows that all the plate put in with CADWorx steel has this problem.