And unfortunately, Buzz and Woody cannot help you here yet. We hope to have our "Rural Road Construction Kit" out in early March, and are making real progress, as shown in that little picture above, but we are working on some technical issues of our own. For example, it is easy to describe "attaching general purpose terrain meshs" [ to our bridges, road segments, etc.] "that mesh seamlessly with other terrain pieces you would place to either side..."  But, it is not so easy to construct such a kind of terrain mesh.  However, we still expect to have a decent kit in March for the purposes of people, such as yourself.