I have been trying to figure out how to add a cell from the cell library to a corridor as a 3D element. Is there a way to do this? (similar to the way the nodes in SUE Modeling operate in OpenRoads)
The 3D cells are MicroStation/Platform based functionality. The civil program itself doesn't have the ability to place these civil cells, but you should use MicroStation to place them.
https://communities.bentley.com/products/microstation/w/microstation__wiki/11318/general---cells---microstation
For more information about the Road and Site design tools, visit the Road and Site design WIKI at: http://communities.bentley.com/products/road___site_design/w/road_and_site_design__wiki