Most bridges here do, and often when one needs to be demolished and rebuilt, the military blows it up just for practice.
Edit: Source for the sceptics
The deep demolition, which became a central element in Finnish post-war demolition tactics, and especially the development of readiness to counter surprise attacks that emerged as a threat scenario in the 1960s, received significant support immediately after the wars. The decision concerning structural demolition preparations for bridges was made on January 15, 1946. These preparations meant building charge wells, charge chambers, charge pipes, and charge hooks. Authorities responsible for constructing bridges were required to include the aforementioned structures in their plans, which significantly improved the readiness to destroy the bridges.
If it was not possible to place the charge space inside the abutment or pier, charge hooks could be embedded in the supports during the casting phase, to which the charges could then be attached.
The sapper units train how to blow up every bridge in their deployment area. Sauce: was in one
So did you do it by hanging shit off the walls or actually putting explosives into structures?
Everything I find about the defensive strategy talks about “charge pits” and “cavities”, can’t find a single reference to hanging or hooks.
As a dapper you’d use whatever means at your disposal, but as a defensive strategy you’re doing with time, why wouldn’t you actually make pits to put rhe explosives in? I’m sure as a sapper you understand how much more effective it is to have an explosive surrounded by the structure instead of just vaguely close to it, so that a majority of the explosive force actually goes into whatever you’re blowing up instead of harakoille. Right?
Directional charges are a thing
Bigger bridges have … crawlspaces you can set stuff in
Yeah… so you’d agree it would be these hooks you’d use?
Yep, directed charge hung on there and you’re good
Directed charges still should be attached to something, because of Newton’s third law.
Or I’m just super ignorant of the type of charge you’re imagining. Please, elaborate.