The BWR has a big metal gate across it near Jenny Creek along with stuff keeping folks from bypassing it on the steep slopes around it. On the West side it is less fortified. The Needle's Eye Tunnel is closed off with two stee/concrete walls and rocks that'd be suitable to protect some kind of military installation from attack.
You should get up there and check it out. The divide is beautiful up there and there is a ton of history. The twin testles are super neat..