A common bottleneck in previous versions, the Event Viewer database has been optimized to prevent progressive slowdowns during large corridor rebuilds.

Corridors received some of the most practical updates for daily design work:

This extension features a new data import workflow for CSV and gINT files, including a "Dynamic Differential" surface tool to better mimic real-world subsurface conditions. Cloud & Collaboration

You can now connect pressure pipes directly to gravity structures.

These powerful extensions are now available to all Civil 3D subscribers, not just those with the AEC Collection.