Hello
You can definitely use floors, those are much better.
If the ramp is straight and rectangular, probably only then use Ramp.. or just for the guide.
In future if you update the topography and if Ramp / road is following the topo, then sub-divide works amazing.
probably not for this project but just thought to show it.
Sub-divide and create profile in plan...closed loope or in parts.
and can be given any thickness and material.
changing the topo will update that sub-division..
further slope annotation can be used as well.