If you wish to have an intermodal yard, street running, or just a plain paved highway crossing, there are may ways to do it. Dave n has two thread here that show his process for creating a street running scene. Techniques and procedures should apply to all scales. These threads are not too long, but they do have pictures. Thanks to dave n for this HTF entry. Concept and materials decision thread. Constructing the scene thread. Additional search terms: highway asphalt flange