Creative Use of Roadbed
Just because it says "roadbed" doesn't mean the Woodland Scenics product has to be used just as roadbed. Anytime a level wall or foundation is required, the flexible foam roadbed is ideal for creating shapes on a model railroad.
In these views, I am providing the walls to form the South Branch of the Arkansas River as it goes through the territory served by the Monarch Branch of the Denver and Rio Grande Railroad. The foam roadbed provides the support structure for the edge of the deep cutting stream and it also will provide support for the towns of Monarch and Garfield.
Foundation for the Foundation
Since I would like to use switch machines to control the HOn3 turnouts around Monarch and Garfield, I will place a sheet of plywood over the top of the oval-ish area, supported by the foam roadbed.
Just the Right Weight
Books are a good way to weigh down the foam roadbed to ensure that the glue sets with the foam as level as possible. I put wax paper between the foam roadbed and the books to prevent any contact between the Elmer's White Glue and the books.
I prefer using Elmer's White Glue because there is at least a half-hour or so that things can be adjusted. In the overhead shot, you can see the long path of the South Branch of the Arkansas River, which is a critical feature of the Monarch Branch.