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I think its a great idea far better than on bridges where in some cases they have a person who is tasked with removing locks off bridges each day

Yes! It is also forbidden to hang locks on bridges in our country.
The suicide bridge used to be hung with these locks.
imagine if they hang a 700-1000 gram lock, then how much additional load will arise on the bridge spans.

yes thats why it is banned on many bridges, the extra stress on the bridge can be dangerous