Definitely! In fact that’s considerably easier than trying to match exact outside elevations.
I’ve attached two files, one a simple SVG path, the other the starting WM world (Alpine Lakes build) modified to have a road in it.
Simple Road Example.zip (16.5 KB)
Follow the steps in my first response to have the road take the elevations from the terrain.
I think the important step missing is that the path has its own elevations that you can set it to whatever you’d like. To make the elevation higher/lower than the surrounding, just right-drag on a vertex to set it:
or right click on the shape as a whole and select “Edit Lofting Curve” to set all of them at once.