A 3dh file extension is related to the 3D highway base map format.

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3DH file extension - 3D highway base map

What is 3dh file? How to open 3dh files?

File type specification:

3d graphics, CAD-CAM-CAE file type icon 3d graphics, CAD-CAM-CAE file type

The 3dh file extension is used for 3D highway base maps from Survey by New York State Department of Transportation.

The 3D highway base map is probably some sort of specialized engineering format.

This 3dh file type entry was marked as obsolete and no longer supported file format.

This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.

Help how to open 3DH files:

Use compatible application to view content of *.3dh files.

How to convert file with extension 3DH:

There is no way how to convert *.3dh files to other formats.

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