The Busch Concrete underpass is a model train accessory designed for use in model railroad layouts. It is a part of the Buildings, Tunnels & Bridges category and is manufactured by the Busch brand. The product is made of concrete and is designed to be used as an underpass for model trains. It is a part of the Parts & Accessories subcategory of the Model Railroads & Trains category and is suitable for use in a variety of different model train layouts.