I wasn't sure. Intuitively rail would seem to be cheaper, it looks like it should be a lot easier to lay a rail line than build a road. But rail lines need a lo

I wasn't sure. Intuitively rail would seem to be cheaper, it looks like it should be a lot easier to lay a rail line than build a road. But rail lines need a lot more fill or bridging over low areas since heavy freight trains cannot climb grades of more than a few percent. On the other hand, rail switches and diamonds have got to be way less expensive than highway interchanges.