A Concrete bridge for model trains and diaramas modeled in N scale (1:160) 4% gradeThis is in N scale (1:160) so you may need to scale according to your needs.To go from one level to another, print six copies of the Deck Truss, Pillar Base, seven Pillar Cap files, one copy of the Ramp, and one each of the Pillar files. To go up and over just double the number of copies.The Pillars and Ramp are all printed Upside down.The Pillar segments need to be assembled, the Pillars slide into the Base,and the cap slides on top.Use the Bridge Deck Truss pieces to span between the Piers to give a 4% grade.The Ramp connects to a single Pillar Cap with no Pillars or Pillar Base.The Bridge Deck Truss is designed to be flexible, once the bridge is in place, cover the Trusses with either paper or sheet styrene to complete the deckPlease comment and let me know what you think and tell me if I need to make any changes.