X-Plane Ornamental Stone Arch Bridges And Ramp. Here are four ornamental stone bridges. These are one, two, three and four arches long. The approach ramp was created as a separate object because you may have hills at the side of the bridge and not need it. If you do, simply add a ramp at each end of the bridge in Overlay Editor and adjust it carefully to fit. You could always add more bridge objects together to make infinitely long Spans. Created from scratch using SketchUp 2015 and photographic textures. Converted for X-Plane with Marginal's SketchUp2XPlane Utility. The bridges all have extended basements (below ground or water level) so they won't levitate on uneven ground. By Paul Mort.