There are some great Weightlifting gyms/ crossfit gyms that have taken over and oly lifting is really popular around Nashville.
Poe's is the only Powerlifting gym. I know some guys that lift at Gold's but most of them are in another federation and cant lift in NASA if you know what I mean.
if you can afford a crossfit gym, I think there is one called MaxfCrossfit (or something like that) in Clarksville that has Powerlifters and the equipment.
sorry I couldn't be more help.
I have always lifted in my Teams Football Fieldhouse weight room.