this post was submitted on 08 Sep 2024
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Bridges are still functional with giant holes blown in the deck. Maybe capacity is reduced, or it needs patchwork, but still functional.
That is why they're typically targeted with large bombs, or missiles. Even then, might take a while.
If this wasn't a hot war, it's possible a covert demolition team could rig enough explosives at the right structural points, but trying that now is a great way to lose a bunch a SOF teams.
Here's a somewhat relevant parable about how hard it can be to destroy a bridge during war.
Another two famous incidents:
The Battle of Sedan
At the opening of the Battle of France, German forces unexpectedly moved through the Ardennes and crossed the Meuse River. Containing the breakout would best be done by destroying the bridges captured. The Germans put up heavy air defense, and both the French and British air forces were unable to bring down the bridges. This was a strategically-critical battle that may have determined the fate of France in World War II.
https://en.wikipedia.org/wiki/Battle_of_Sedan_(1940)
Another bridge that also famously held up to a lot of attacks in WW2, this at the end of the war:
The Battle of Remagen
https://en.wikipedia.org/wiki/Battle_of_Remagen
Air defenses and air-to-surface delivery mechanisms have changed since then, but bridges can still hold up to a lot.
For sure.. but limiting the use case to for example exclude 40tons or armor is already something.
It not really important though, I was just thinking out loud and am sure the Ukranians do the same.. or have even tested it already.
If it was good and practical we would most likely already see it done. Like the new dragon's breath drones.