I was looking around trying to find a quicker way to do exactly this and it brought me here. I hit the limit playing yesterday and God knows how many random ramps and paths between raised areas I've built. That's going to take a while, and without a high limit I'd at least like a way to put them on the map so I can tear them down more easily. Now I know to tear them down as I go.
Hey! I know this is a bit of an old post but as an update, I just wanted to let you know we increased the construction limit by 10 times the amount it was!