We are building these Rail Crossing Kits for a customer, each “kit” comes with 5 middle pieces (between the rails) and 2 outside pieces (outside the rails). The pieces closest to the rails are bevelled to allow for the rail plates/nails to clear. This makes the installation simple and quick. Additional features might be treating the material for rot resistance. The kits are 20′ long, 50″ inside the rails and 12″ outside the rails.