Mesh road edges be GONE

So yeah, everyone knows how the edges of MESH roads, unlike surface-applied decal roads, must be manually worked into the terrain, with much, much effort on your part. That's a real pain, especially if you have rather smallish grid squares, or obtusely LARGE ones on a HUUUUGE map to the point where it's near impossible to mesh the road in without getting gobs of clipping/flickering etc.
Nevermind this obscenely-almost-too-large-for-Beam 12mi x 12mi map (144sq mi!) of REAL Tennessee I'm...

Mesh road edges be GONE