PBR Single Girder Gantry Crane V2 - Yellow Low-poly 3D model is available on CGTrader for $10. Original author: PBRCool. Specs: 14740 polys, 16961 verts.
MA (Autodesk Maya, filesize: 10.5 MB), OBJ (OBJ, filesize: 10.5 MB), FBX (Autodesk FBX, filesize: 10.5 MB), MAX (Autodesk 3ds Max, filesize: 10.5 MB), TBSCENE (Marmoset Toolbag, filesize: 10.5 MB), 3DS (3D Studio, filesize: 10.5 MB), DAE (Collada, filesize: 10.5 MB), ABC (Alembic, filesize: 10.5 MB), UNITYPACKAGE (Unity 3D, filesize: 10.5 MB), UASSET (UnrealEngine, filesize: 10.5 MB), SPP (Substance Painter, filesize: 492 MB), TEXTURES (Textures, filesize: 1.39 GB)