Files with 00d extension are used by the GEOPAK modeling software. They contain some resource data.
Software that open 00d file
00D file extension - Bentley GEOPAK resource file
What is 00d file? How to open 00d files?
File type specification:
The 00d file extension is associated with the Bentley GEOPAK modeling application that is used to design civil road infrastructures. The Geopak 00D file contains resource data for running existing ground (DTM).
The default software associated to open 00d file:
GEOPAK Civil Engineering Suite 
Company or developer:
Bentley Systems, Incorporated
Bentley GEOPAK is road design software for designing and sustaining transportation infrastructure.
List of software applications associated to the .00d file extension
Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open 00d file, edit 00d file, convert 00d file, view 00d file, play 00d file etc. (if exist software for corresponding action in File-Extensions.org's database).
Hint:
Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting 00d files.
Programs that can create 00d file - Bentley GEOPAK resource file
Programs supporting the exension 00d on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about GEOPAK Civil Engineering Suite for create 00d file action.
