AutoCAD Civil 3D

[#1]

When plotting sections the headwall storm structures are rotated 90 degrees showing the face of the headwall not the side.  How can I rotate the structure in section view.  See example below.

[#2]

Is your headwall part of your assembly or just projected block? If projected, I think you can create a block rotated the way you want it and use it in Section View. You would need to edit Structure Style and change the teh existing structure with your new block.