To Export an AutoCAD Civil 3D Drawing to a MicroStation DGN File
You can create a MicroStation® DGN file from an AutoCAD® Civil 3D® drawing.
Tip: As a prerequisite to using this command, if you do not have MicroStation installed, you may want to first use the DGNMAPPING command to create a mapping setup file which you can select when exporting your drawing. A mapping setup file associates AutoCAD layers, linetypes, lineweights, and colors to their equivalents in MicroStation.
Set up your drawing so that all objects that you want to export are visible. Only those objects that are visible will be exported.
Click Output tab Export panel Export Civil 3D DrawingFind.
In the Export Settings dialog box, specify the settings for the exported files, and then click OK.
Note: The Export Settings dialog box displays different options depending on whether you have MicroStation installed or not.
Use the other options in the Export AutoCAD Civil 3D Drawing dialog box to specify additional settings for exporting the drawings and to specify which drawings to export.
Click Export.
The Export Status dialog box is displayed.
Review the information displayed in the dialog box and click OK to close it.