Combine roads and rails in any HO scene with the Cornerstone Urban Road & Rail Overpass kits. These highly detailed HO structures are typical of common designs in use from the 1900s on as increasing auto traffic made replacement of grade crossings a better option, and many are still in use today. A realistic addition to commercial, industrial and suburban areas, they're also easy to use with the Cornerstone Asphalt, Brick and Concrete Street System kits (each sold separately). Each model features detailed plastic parts, molded in concrete and dark gray colored plastic. For more information about the entire Cornerstone Engineered Bridge System
 
The Urban Retaining Walls kit features:

• Simplifies modeling elevated tracks in new or existing scenery
• Easy to use with Urban Overpass kits & Elevated Commuter Station - adaptable to other bridge kits
• Simulates poured concrete walls built from the 1920s on
• Great value with 60 parts molded in concrete gray including:
• 8 tall, 4-panel retaining walls each 8 x 2-1/2" 20.3 x 6.3cm
• 8 short, 4-panel retaining walls each 8 x 1" 10.3 x 2.5cm
• 8 tall connectors
• 8 short connectors
• 8 customizable end plates (use with Overpasses or Elevated Station kits, each sold separately)
• railings
• 8 short wall supports
• 4 short wall corner connectors

Easily expanded by combining kits & customized with molded cut lines