So I redeisgned what I used to refer to as a cattle grid, before realising that the line in question is not likely to have these.
Instead it has a small culvert with sleepers and support rails underneath them. The only problem is that they are located almost immediately after a level crossing. With TS's prehistoric in game grid, there is no room to manipulate the terrain neatly to depict a gap several feet in height like shown in the attached image.
I have also attached what I am faced with in the actual game.
I have thought of creating road lofts with embankments, which might work. But then I might create other issues that I haven't even identified yet. I may not. But I am just wondering some here. Has anyone had a similar problem like this, and found a solution to it?
What I am thinking of is creating an object which hides the terrain (like with Scaleroad) and enables the culvert to be shown in it's full glory. But I have no idea how to do this in the style that Marc has. It's still a mystery to me.
Thanks for reading.
Edited to add more info.