Nope, Pantex is the only one left. You can thank Bill Clinton for that.
"Pantex"... that's some woman-thing, right?
Yeah, but think of the benefits! If they are the only shop left, you don't have to worry about that "Oh, we were really looking for somebody with more experience" line when applying for that Nuclear Bomb Dismantler job."
It is hard to get a nuclear weapon to detonate properly in the first place. Precise machining of intricate yet bulky parts, the most exotic timing mechanisms, shaped explosive lenses, corroding parts, half lives measured in days etc. They are almost so complex that if one minor thing goes wrong you end up with a conventional explosion and lots of contamination but very localized.