@[email protected] personally I think some should be kept as historical markers, neither celebratory nor commemorative, but simply to record.
Like you I lived through those times (but in the UK) and I'm still shocked by finding out new things about how close we came then. The latest thing I learned was about the US using depth charges in international waters during the Cuban Missile Crisis to get USSR sub B59 to surface, unaware of the almost apocalyptic argument they triggered: https://en.wikipedia.org/wiki/Vasily_Arkhipov
@[email protected] thanks! I think I often go past that travelling between the airport and my partners place in northwest Philly. I remember seeing the power station but hadn't paid any attention to the bridge. Sounds like the arsenal that gave the bridge its name got bulldozed in the early 60s.