dustytiger8 said:Well... no... that's just not how it works.
A thick slab of concrete is basically just a target for a bunker buster. Just Google "bunker buster bomb" if you don't believe me. A single BLU-109 is plenty to take out a bridge; it can punch through two feet of reinforced concrete without breaking a sweat.
Sure, it pierces, but I assume the goal is to bring the whole structure down rather than just leaving a hole in it...
Keep in mind this isn't some "self-supporting" design like a beam, arch, or suspension bridge; it’s actually more like the Verrazzano-Narrows Bridge, where it's essentially a series of separate slabs resting on pylons. Unless you manage to take out the actual supports, you aren't doing much damage—certainly nothing that couldn't be patched up pretty quickly, even if you did manage to crack one specific segment. If a slab fails, you just swap it out for a new one...
But then again, if a couple of squadrons of F-35s decided to show up and use precision-guided munitions to carve out several strategic hits exactly where they need them...
It feels a bit pointless to compare today's cutting-edge tech to what happened fifty years ago, though it might be worth remembering the situation with the
Thanh Hoa bridge back then...
https://www.airforcemag.com/PDF/Maga...11/0811jaw.pdf