Luis,
I love the fine work you have done on the trestle and the way you have set the benchwork up ready for the "river".
I want to include a similar "below grade" feature (river or creek) on my *dead flat* NTRAK module just to provide a little visual interest to the topography. I was imagining setting it up much the same as I see you have done. Thanks for the inspiration.
Share with us when you have "fleshed it out" with scenery, water, etc.
Gavin