I've always respected my city, Louisville, for operating and maintaining their CD-era sirens long after most cities have replaced them. While not all Thunderbolts and 3T22s have escaped replacement, I would argue Louisville has the most legacy sirens operating in the country, save for Memphis (correct me if I am wrong!).
As of today, December 13th, 2021, we have:
-23 active Thunderbolts (22 1000Ts, 1 1000)
-17 active 3T22s
(Louisville Siren Map in my signature below)
But like I said, we have to understand sirens will be replaced...out with the old, in with the new...whatever. So I was deeply saddened when I was driving down Hubbard's Lane in June of this year and saw no Thunderbolt on top of the pole just north of the Waggener High School football field. But I had a hint of hope.
Because in late 2020, Louisville went on a mission to replace all the poles and/or wireless communications on their sirens- new or old. I personally saw crews working at roughly 3 sirens in November of 2020 and feared the worst, only to realize the siren wasn't what they were there for. And in early 2021, the 3T22 closest to my childhood home suddenly went missing from its pole. BUT, it wasn't that far away!
And sure enough, 2 weeks later, that 3T22 was back up on a brand new, and taller, pole with the aforementioned upgraded wireless communications.
Anyway. Back to June of this year. I'm driving down Hubbard's Lane and see that pole at Waggener without the 1000T on top. I couldn't stop to see what was going on because I was heading to meet friends for dinner, but let's be honest, the entire time I was there I just kept thinking about the fate of that siren. It's the lone east-end Thunderbolt in a sea of 2001s, so I have thought for years now that Waggener would be the next to be replaced.
Early the next Saturday, I head to Waggener to see what's up. Much to my delight, this is what I saw:
Take a closer look at that last picture. What do you see? I see a brand new pole along with preventative measures taken to ensure dirt doesn't get into the blower pipe. I was optimistic. I immediately thought about that 3T22 above that was taken down in Lyndon, and how it sat on the ground while the pole and communication system was replaced. And then it went back up.
Three days later came the first direct message from someone telling me Waggener's Thunderbolt had been replaced. Then another came. Then another. Then comments on my last Waggener High School Thunderbolt recording. Everyone is so used to legacy sirens coming down and never coming back up, and I don't fault them for that. But I responded to each message telling them "I almost guarantee Louisville will put it back up".
And yeah, I was correct, but I had no idea what was coming: a complete Thunderbolt refurb in 2021! Here is the Waggener Bolt as it stands today!
I'm thrilled to see my city is still clinging onto their Thunderbolts in 2021 and even putting time and effort into maintaining them. I understand the concerns around no battery backup, and I do not discount that. I'd argue most folks on this forum would gladly have a Thunderbolt stand in for a 2001 just for audio properties alone, so I like to think Louisville understands this...or maybe we are just broke and can't afford new sirens! Either way, I am happy.
The most recent CD-era siren replaced was the 3T22 on Bethany Ln. in early 2019. No removals since then, and while I will always know change is constant, it's a breath of fresh air to know they respect the sirens they have and they're willing to keep them online as long as possible.
Tomorrow is test day, and I am heading to Waggener.

All of you know my state is suffering major heartache right now while we try to rebuild places like Mayfield, Bowling Green, Dawson Springs and several towns in between. If you're the praying kind, please do so. If you're not, I'd ask you to keep my community in your thoughts. There are a lot of people grieving right now, and there is a lot of healing that needs to happen. I'm confident all of us- Arkansas, Missouri, Illinois, Tennessee and Kentucky can get through this and be stronger on the other side.
Thanks for reading my post, and I hope you all are doing well. It's time for another beer.