Combine roads and rails easily in N Scale scenes with the Cornerstone Urban Retaining Walls kit. This highly detailed and versatile model is adaptable to new or existing layouts, and offers various options to build common designs supporting elevated railroad rights-of-way in areas where increasing auto traffic required eliminate of level tracks and grade crossings. A realistic addition to any commerical, residential or industrial area from the 1900s to the present, the kit features: Simplifies modeling elevated tracks in new or existing scenerySimulates poured concrete walls built from the 1900s onEasily expanded by combining kits and customized with molded cut linesEasy to use with Urban Steel Overpass (933-3871) - adaptable to other bridge kitsGreat value with 56 parts molded in concrete gray including:8 tall, 4-panel retaining sidewalls each: 4-3/4" Long x 1-1/2" Tall 120 x 38.40mm4 tall 3-panel retaining end walls each 3" Long x 1-1/2" Tall 76.2 x 38.40mm8 short, 4-panel retaining walls each 4-3/4" Long x 1/2" Tall 120 x 14.4mm8 tall connectors8 short connectors4 customizable interior reinforcing cross pieces8 Railings8 short wall supports