Check out Locomotive and bridge trestle complete textures and materials 3D Model Pack 3D model on CGTrader for $50. High-quality mesh by GQP.
BLEND (Blender, filesize: 464 MB), OBJ (OBJ, filesize: 8.61 MB), FBX (Autodesk FBX, filesize: 8.78 MB), GLTF (glTF, filesize: 449 MB), TEXTURES (Textures, filesize: 419 MB), DAE (Collada, filesize: 173 MB), PLY (Ply, filesize: 3.07 MB)