Okay. So you can Page Up to make the road lift up and make a bridge, but can you also Page Down while at ground level to push the ground down slightly and make underpasses? I'd rather my overpasses, when they're for two roads that are at the same ground level, kind of go downward into the ground instead of up. I'd prefer it sort of average it out and push one road down slightly and the other up slightly but not up a full level. I think it looks really silly when the road just suddenly goes up to make a bridge then goes back down. Since I don't think you can modify the terrain after starting the game (Why did that die off with SimCity? I want to be able to modify the terrain) I fear you can't even do it manually. So having it do it automatically would be nice. I haven't seen during game terrain modification aside from the buildings flattening ground out when on slopes so thought it would be nice if forcing roads downward was a thing.
Also, tunnels. Will we get tunnels eventually? For all travel types. Road, sidewalk and train. Another thing that seems to have died out with SimCity.
Could mods add either of these features to the game?