This specific 3D model, "Concrete barriers 3D Model Pack get", is an asset made available by "Unknown author".
Can be downloaded at "Unknown platform" by following the link.
The license for this digital asset is "Unknown license".
BLEND (Blender, filesize: 4.87 MB), OBJ (OBJ, filesize: 4.33 MB), FBX (Autodesk FBX, filesize: 264 KB), GLTF (glTF, filesize: 212 KB), ABC (Alembic, filesize: 320 KB), STL (Stereolithography, filesize: 279 KB), DAE (Collada, filesize: 712 KB)