MegaShapes Conform feature
https://assetstore.unity.com/lists/me...
A new feature added to MegaShapes now allows you to conform your lofts to a target object such as a Terrain or a mesh object. So you can now easily make your lofts fit your world and have roads or levels fit your levels automatically instead of having to adjust the spline. The system updates in realtime so you can position the loft exactly where you need it or change your terrain and the loft will change to. More conform features coming soon.
More information on MegaShapes can be found on our website at http://www.megafiers.com