how to blow up a bridge without tons of bombs
In May 1943, the RAF launched the famous Operation Chastise: 19 bombers with the so-called “bouncing bombs” of Barnes Wallis to destroy german dams. It was the most sophisticated solution of its time to a classic problem: how to break a gigantic structure with precision. Eight decades later, that same obsession lives on, only now it fits in an operator’s backpack A bridge as an eternal military obsession. There are few things more valuable in a war than a bridge. Concentrating troops, armor and logistics in an obligatory step turns these structures into strategic arteries, and that is why destroying them has always been a military priority. The problem is that they are hard targets by nature: decades of doctrine taught that to knock one down bombers, heavy artillery or high-cost missiles were needed. An alternative has just appeared in Ukraine that breaks that logic. It is not more powerful or faster, but it is much cheaper and more persistent: dozens of small suicide drones working like a colony of termites until the structure is emptied from within. Solve an old problem with new things. What is really important here is not only that Russia has demolished a bridge with 43 FPV dronesbut it demonstrates something that for years was almost a laboratory hypothesis: that tons of explosives are no longer needed to blow up critical infrastructure. During World War II, sinking a bridge could require hundreds of tons of air-dropped bombs. Then came weapons like the ATACMS either the JDAM to do it precisely. Now the equation changes again: less than 250 pounds of ammunition distributed in small impacts can achieve the same effect. The military obsession of “how to cut off the enemy” has just become radically cheaper. The structural logic of collapse. The key is not to destroy it in one fell swoop, but to understand how does a bridge hold up. Reinforced concrete is strong because it combines two materials with different functions: concrete supports compression and steel absorbs tension. The FPVs they don’t need split the entire column. They just have to go tearing off layers of concrete until the metal skeleton is exposed. At that moment the structure loses much of its load capacity. The steel is still there, but it is no longer enough to support the weight. The bridge begins to collapse on itself and collapse due to structural fatigue. The war of accumulation. This introduces a completely different logic to military destruction. Before, power concentrated in a single blow mattered. Now it matters sum of many blows small, extremely precise and always directed to the same point. The first impacts barely remove fragments of cement. The following deepen the crack. The latter turn the column into an empty shell. It’s something like the industrialization of wear: a slow, but surgical method. What once required an aerial window, tactical superiority, and millions of dollars can now be done with patience, coordination, and a backpack. full of quadcopters. Ridiculous cost, enormous strategic effect. The most brutal fact is economic. The 43 FPVs used in the attack They would have cost less than $25,000. That’s about half of a single American guided bomb and a ridiculous fraction of the price of an ATACMS missile. The comparison is devastating for any classical military planning, because for the cost of a single strategic missile you can launch forty similar attacks. And without exposing pilots, planes or large platforms. It is the democratization of tactical demolition: destroying critical infrastructure is no longer the privilege of those who have heavy aviation. What comes next. Possibly, the big impact of this is not on the bridge in question, but on what it redefines as a viable objective from now on. If a handful of FPVs can knock down a highway structure, railway bridges, overpasses, logistics warehouses and even tall buildings start to come into the equation. Even more so if the drones use linear hollow charges capable of directly cutting steel bars. Systems like Pasikawhich allow a single operator to control entire swarms, further accelerate that process. The question is no longer whether they can do it. The question is how many critical structures in the world are still designed under the old idea that only big bombs can bring them down. Ukraine is showing that that era is over. Image | Rasal HagueDmitro Zavtonov In Xataka | “Speed is not the key”: the trick against all logic of Ukrainian drones to hunt the fearsome Russian shahed In Xataka | “They are preparing the deployment of 80,000 soldiers”: satellites indicate where Russia is heading in Europe after Ukraine
