Can Civil 3D data be converted to Inroads SELECTseries 3? If so, please provide a workflow for the conversion.
To import Civil 3D data into InRoads, you should export your data to LandXML and then import via the InRoads native command: File>Translators>LandXML Translator. LandXML files can be opened with OpenRoads tools such as Terrain Model>Create From File and Survey Processing>Load Data.