Not possible.GB -- maybe put some fencing a few feet before the culvert opening to catch the debris, then easier & more open clean up? Seems like it would be. Maybe even most moveable with tractor and attachments? Worth some thought.
I've killed thousands, probably 10s of thousands. (but as Arnold S. said in True Lies.."just the ones that deserved to die")so ok @greybeard maybe you don't hate every tree, maybe just the ones that cause you and yours problems. I can appreciate that kind of dislike but to condemn them all is just wrong.