In a normal world, infrastructure damage with an impact as large as this would be fixed in a week or two. For anyone not familiar with the east coast of the US, this is the north-south corridor which runs from Miami, Florida to the Canadian border in Maine. There are alternative routes for through traffic (namely the NJ Turnpike) but diverted traffic is going to be a nightmare while we wait for this to be repaired.
https://hexbear.net/post/272284/comment/3525953
You essentially need a stockpile of pre-assembled replacement parts to do something like this, so it will never happen here with just-in-time manufacturing. On the same note, we are beyond megafucked if and when we get hit by "The Big One®" solar flare edition.