You can export a drawing created in AutoCAD Civil 3D to 3D DWF format.
A Design Web Format (DWF) file is a set of drawings or images that is compressed into a single, smaller file, making sharing across the Web faster and more secure.
The Export to 3D DWF command creates a DWF file with all or the selected AutoCAD Civil 3D objects and AutoCAD primitives. The command uses the 3D display representations of the objects when displaying them in the DWF file. Some objects do not have 3D display components (for example, profile views), so they are not displayed in the 3D DWF.
Object metadata is also exported with 3D DWF. For example, the maximum surface elevation information is available when you view the 3D DWF in the DWF Viewer or Autodesk Design Review.
For more information on 3D DWF publishing, see the AutoCAD Help.