Crossing all kinds of obstacles will be easy with the Cornerstone Modern Long Span Concrete Bridge. This detailed HO structure kit is typical of high-capacity railroad bridges made of prefabricated concrete sections, and used as a replacement for older bridges from the 1990s to the present. The kit features: Use to cross highways, other railroads, and natural obstacles Build with one to three spans, each 50 scale feet (15.2m) long - easily expanded by combining kits Three styles of pilings included: Highway crossing Railroad crossing w/crash wall Tee-Style (′Hammerhead′) for extra clearance Includes detailed abutments, curbs and handrails Easy to build and install on layouts old or new Molded in concrete gray Finish your installation with the WalthersTrack Code 83 (948-83001) or Code 100 Flex Track (948-10001), both sold separately Finished model measures: 20-7/8′ Long x 2-7/8′ Wide 53 x 7.3cm Height w/pilings Railroad Crossing: 4-11/16′ 11.9cm Highway Crossing or Tee-Style: 3-7/8′ 9.8cm