MicroStation allows you to open .shp file format directly in MicroStation or attach it in a DGN file but MicroStation is a design product, NO GIS software, so it will only import geometry, not import database attributes, labels, etc.
3.Otherwise open a new file in MicroStation and use the Reference Administrator dialog to attach the .shp file
Bentley Map provides this GIS functionality. To work with GIS data is recommended to use Bentley Map or any Civil products with Map tool activated.
Bentley Map is needed to export .dgn files to .SHP files.
Shapefiles (*.shp) require at least three files in the same directory, with the same name and with the following extensions:
In addition to the three mandatory files listed above, you can include the following optional files.
Project format; contains the coordinate system and projection information, a plain text file describing the projection using well-known text format.
.sbn and .sbx
A spatial index of the features.
.fbn and .fbx
A spatial index of the features for shapefiles that are read-only.
.ain and .aih
An attribute index of the active fields in a table or a theme's attribute table.
A geocoding index for read-write shapefiles.
A geocoding index for read-write shapefiles (ODB format).
An attribute index for the .dbf file in the form of shapefile.columnname.atx (ArcGIS 8 and later).
Metadata in XML format.
Used to specify the code page (only for .dbf) for identifying the character encoding that will be used.