The Walthers cornerstone 70' single-track railroad deck girder bridge is based on one of the most common North American railroad bridges to offer unlimited overhead and side clearance for passing trains. Deck girder bridges are ideal for steam, classic diesel and modern-era scenes. 70' bridge installations are often used as approach spans to larger bridges, or as Overpasses for multiple-track rail lines, highways and streams. This easy-to-build HO scale plastic kit can be built with an open or ballasted deck. Add to new or existing scenery with center Piers #933-4550 and abutments #933-4551, both sold separately. Use with Walthers code 83 bridge track #948-886 or #948-899, both sold separately. Parts are molded in dark gray.