This specific 3D model, "Concrete Barrier 3D model get", is an asset made available by "Unknown author".
Can be downloaded at "Unknown platform" by following the link.
The licensing terms for this digital asset are governed by "Unknown license".
MAX (Autodesk 3ds Max, filesize: 5.79 MB), OBJ (OBJ, filesize: 391 KB), FBX (Autodesk FBX, filesize: 128 KB), MAX (Autodesk 3ds Max, filesize: 5.79 MB), GLTF (glTF, filesize: 13.6 MB), 3DS (3D Studio, filesize: 43.9 KB)