Bentley InRoads topologically triangulated network data
File type: Various data file
A ttn file contains topologically triangulated network data for Bentley InRoads.
It is a specialised data file used by InRoads for civil engineering and road design work.
Found 2 different file type records with the same ttn filename suffix.
File type category:
Various data file
Date updated: October 7, 2026
Bentley InRoads is civil engineering software from Bentley Systems for road design, analysis and modelling. The ttn file stores a topologically triangulated network used by the program to represent terrain or other modelled surfaces.
The file belongs to the InRoads data set and is intended for use within the software rather than as a general-purpose document. Bentley InRoads for Microsoft Windows is the relevant application for working with this format.
Open the ttn file in Bentley InRoads on Microsoft Windows. Use InRoads' terrain or network tools to load the file as part of the relevant civil engineering project.
Open the file in InRoads and use the program's available terrain or data export functions to create a format supported by the intended destination software.
Software applications that handle other tasks involving ttn files:
Microsoft Windows
File type category:
Various data file
Date updated: October 7, 2026
Record marked as obsolete and not updated for a long time.
The ttn file extension is associated with Tartan Generator, software developed by TartanWeb for generating tartan patterns. The program was particularly associated with tartan design in Scotland.
A ttn file stores a saved tartan pattern, including the design information needed to reopen it in the associated software. The file is a native data file rather than a general-purpose image format.
The format is obsolete, and the associated Tartan Designer software was made for Microsoft Windows.
Use Tartan Generator to work with *.ttn files. The associated Tartan Designer software for Microsoft Windows may also be required.
Tartan Generator may be able to export *.ttn files to other formats.
Software applications that can open ttn files:
Microsoft Windows
Tartan Designer
Software applications that can edit ttn files:
Microsoft Windows
Tartan Designer
Software capable of saving ttn files:
Microsoft Windows
Tartan Designer
Software apps that create ttn files:
Microsoft Windows
Tartan Designer
Software applications that handle other tasks involving ttn files:
Microsoft Windows
Tartan Designer
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