Thanks a lot for your suggestion!
It shows me that my splines were too complicated. I assume you extracted the front splines of the bridge/connection and generated the center spline with the curve command from the old bridge. Didn't you?

The UV mesh was not in the right direction, so I did the sweep differently: activated the long splines first and then took the short ones as rails. Then the uv-set was right with the rest. There I also took this order.

And it shows when extruding to a slightly thicker thickness in c4d (with the cloth tag) that the mesh has a quirk.
In Moi I can't make the texture thicker as a whole by extruding.
I think overall, I'll recreate your approach once and see if it's a cursory error.


Texturdirection wrong:


Artefakt after cloth-extrude in c4d


P.S.:
I can't get the object to fit together as one piece in MOI. Neither by bool-union. Nor by join.
That makes it complicated in further handling in Cinema...I must try to keep it together...

Thanks, Mala