$23 rail flyover Low-poly 3D model by gilanghidayat. Available on CGTrader with 21484 polys and 43868 vertices. Check it out on CGHub.
BLEND (Blender, filesize: 30.1 MB), OBJ (OBJ, filesize: 497 KB), FBX (Autodesk FBX, filesize: 1.2 MB), STL (Stereolithography, filesize: 2.09 MB), TEXTURES (Textures, filesize: 26.9 MB)