Hi @Domziman. It is pretty interesting what you are trying to do, however, I couldn't find an option to achieve it in C3D.
A workaround for this would be to get a points report (NEZ) along the Edge Of Pavement, and later compute the superelevation values on a spreadsheet. Then, you can create a polyline from the end result that represents the superelevation values of your corridor. I do this for existing corridors' superelevation, but I think it might work in your case also.
I hope this helps. Best regards!
Camilo Fernández
Civil engineer | Specialist in design, construction, and maintenance of roadways