> For the complete documentation index, see [llms.txt](https://autodesk.ifc-manual.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://autodesk.ifc-manual.com/civil3d/ifc-4.3-support.md).

# IFC 4.3 Support

IFC 4.3 is the version of the IFC schema that offers extended support for Infrastructure categories, like Roads, Rails or Bridges (read more about [IFC Schema versions](/understanding-ifc/ifc-schema-versions.md)).

Autodesk has released a plugin that offers early IFC 4.3 support in Civil 3D 2022 and later. The plugin can be downloaded from the Autodesk Account: 

<figure><img src="/files/BigKuNJu4kwfntQWDD1Y" alt=""><figcaption></figcaption></figure>

After the installation, Civil 3D users are able to access the new commands `IFCINFRA....` in the command line or the buttons in the Add-ins tab:&#x20;

<figure><img src="/files/xt7S8B8ZPnYhgVXjjjyp" alt=""><figcaption></figcaption></figure>

More information about the commands can be found in the [Civil 3D Product Documentation](https://help.autodesk.com/view/CIV3D/2024/ENU/?guid=GUID-7FAFA066-E981-4EC3-B074-58A57F7A1D46) and will be added to this manual after the final release of the ISO standard.&#x20;

The following video provides a brief overview of the first 4.3 implementation in Civil 3D and discusses the basic principles of this version: \ <mark style="background-color:orange;">▶️</mark> [<mark style="background-color:orange;">IFC4.3 - Civil 3D Export</mark>](https://youtu.be/lufYVkGNLBM?si=CSQT4uGQsgcbLkhM)