I have been having problems with my model getting surfaces to close after draping linework onto a topo map. When I draped it a few surfaces were created but nothing like I needed. There's a road and a playground and sidewalks that I need to apply materials to to render in Lumion. Usually I would just do "intersect" and it would work, but it's not working here.

I can't seem to upload it here though as it's too big (despite having very little information)so if you want a copy of it let me know.

Thanks