He correctly identified as BITTERSWEET - Celastrus scandens.
It says the vine stems get 30 feet long but I got one that is at least that long, and still trying to climb up higher on an 80 foot tree in my backyard.
To kill them they need to be totally uprooted, and possibly treat the area with Roundup, as they are very persistent growers.
I actually like the plush green vegetation they provide, but have to cut the ones back that are swarming my back porch. -Tom
Oh, yes. The older cultivar is VERY aggressive and hard to get rid of.
Bittersweet and Virginia Creeper (which was my guess, if I’m remembering correctly) are the two things that people always regret planting later on in life, or end up having to deal with from a previous owner. ;)
Glad you at least know what you’re up against, now!
Good luck in your battle.