My apologies for the Twitter link. Appears to have happened around 1:30 EDT, judging from the timestamp in the video. Seems unsurprising that Amerikkkan infrastructure is in this dire of a state (at the cost of innocent people's lives, as usual), but I'd still love to know what the hell happened here. Hopefully the early hour meant that more people weren't harmed.

Photo of the aftermath:

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  • homhom9000 [she/her]
    ·
    9 months ago

    I have a high school understanding of bridge mechanics but how did a hit on one side make the whole thing fall? Can bridges be given supports to be secure if one section is damaged ?

    By high school understanding, we had to build bridges out of sugar cubes or popsicle sticks that could support a heavy load.

    • abc [he/him, comrade/them]
      ·
      9 months ago

      whole bridge didn't fall. It hit a central support column that holds up both sides & a good chunk of it collapsed. The bridge is over a mile long so the videos make it seem like the entire bridge fell but that is only a section of it.

    • krolden@lemmy.ml
      ·
      9 months ago

      The bridge requires an even amount of weight to be on each pylon. If one pylon goes down all the weight shifts to the other and the whole thing goes down.

      https://en.wikipedia.org/wiki/Continuous_truss_bridge

      • homhom9000 [she/her]
        ·
        9 months ago

        Thanks! I was trying to understand how the untappee pylon still caused collapse.