The Rix Modern Highway Overpass for HO scale is modeled after the bridges built today to span over railroad tracks. This style of bridge is typical of most new construction and is used all over the country. The Rix Modern Highway Overpass consist of 50 foot spans which interlock together so that any length bridge can be built. The piers are designed to be adjustable so that raising or lowering the bridge for different heights is quick and easy.