Yeah I've seen them as I've driven Turku-Hki highway 1 and the old nr 1 as well.
For me it'd be much more believable if we we're talking about eastern cities. The road infra around the eastern border, no matter how clearly designed against an invasion from the East, was not talked about for decades. But they've since loosened the policy.
I understand the logic. I just don't buy into it. I understand I can be wrong but eh, until further evidence is presented this is my opinion.
Drilling is slow, yes, but explosives not in a structure just hanging on a hook outside are very much not efficient at destroying the structure. So if that's the case, you'd pre-drill holes for explosives. Which they apparently do do in the East.
I do find confirmation of plans to destroy the bridges, but the words used are "charge pits" or panostustila/panostusaukko in Finnish.
I just can't believe it'd be silly hooks like that so close. That to me seems just like the steel that's strengthening the concrete.
Source pls.
Most of those plants live in extremely nutritionally poor ground, so when you grow them at home and they have nutrition, they wouldn't require eating I guess.
But evolution did not make flycatcher plants just for the lulz.