Essentially I was trying to create a topography that had a road carved out.
The problem with this is usually GIS roads are not closed crv’s or just all kinds of messed up.
Workflow to do this.
Create or download your roads. _projecttocplane (delete input) > place topography below your roads > turn your roads into a crv outline however you have to do it > top view > turn your topo into a surface (meshtonurbs) > _project your roads onto the surface > _patch your new crv’s > delete all remaining curves > select all and _trim the unwanted surfaces > _extrudesrf your patch roads to the depth you want your road to be > extrude srf downwards your topogrphy to the depth you want it to be > _booleandifference.
The workaround was the patch command.