Play it and watch carefully and looks for white explosions:
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top side of the structure in the center of the bridge - you can see it after is starts going down,
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top side of the structure on the left,
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the main bar that was hit by the vessel - the part below the road level, on the same height as the top side of the vessel
In 1 and 2 you can see white smoke going down following the place where the explosion was.
Number 1 is where the “key stone” would usually be on the arch.
Number 2 is where the left part breaks later.
Number 3 is where and when the main pillar starts to fall.
EDIT: On this video below you can watch the left part zoomed out - there are 2 explosions there and the smoke is easier to notice: https://greatawakening.win/p/17siNus3gG/moment-of-collision-and-collapse/c/
I saw it and my first thought was arcing from the electrical conduits as the wires are pulled apart with the collapse since they appear brighter after it looks like it already broke as opposed to initial explosive leading to collapse but I don’t know if that is a Hollywood special effect thing or if wires have enough voltage to arc
Yes. Wires can generate a spark. Not sure about white smoke. And why it breaks exactly in the same place?
I will look closely at white smoke I wonder if explosives are actually “flashless” but make smoke. Again no experience to go on.
My thoughts as well, though I'm puzzled by the arc sizes, I would think there wouldn't be that kind of voltage (to cause that big of an arc) routed across the bridge.
I have no experience with Arcing other than from a car battery Everything else is Hollywood special effects predictive programming