Going to work on a road today since it is kind of dreary outside. I will be using chipboard as described by Bruce Arbo in the T-TRAK Wiki under Tutorials.
It is hard to see the chipboard in the picture but I like to weight it down while the glue dries. I'm using my inexpensive weights: gallon milk containers filled with water which weigh about 8 pounds each.
After about an hour for the glue to dry some I added some spackling to help contour the shoulders of the road. Once it dries thoroughly I will sand it down and adjust accordingly. The spackling is the kind that goes on pink and turns white when dry.
I have been involved with N Scale for a long time (not as long as some) but N Scale has always been my choice of scales. I have had different layouts over the years, mostly what some would call traditional layouts ranging from hollow core doors to starting on an around the room project.