Currently doing a class from skillshare using the same version of blender that I am. Currently trying to add stone bricks around just the bottom arches of this bridge but I cannot get the boolean to exclude the top rails which should be separate. Not sure where to go from here as im still in a learning phase. Attached is a screenshot showing the top rails and arches alongside the nodes that I am manipulating. I want just the arches not the rails also.
Hello
Remove/move whatever object is causing the rail intersection.
Good luck.