Check out railway level crossing 100m 3D model on CGTrader for $2. High-quality mesh by cagdasc: 65724 polys, 197172 vertices.
SKP (Sketchup, filesize: 1.33 MB), BLEND (Blender, filesize: 6.13 MB), OBJ (OBJ, filesize: 4.47 MB), FBX (Autodesk FBX, filesize: 1.37 MB), GLTF (glTF, filesize: 2.25 MB), ABC (Alembic, filesize: 2.17 MB), STL (Stereolithography, filesize: 3.13 MB), DAE (Collada, filesize: 4.89 MB)