MCI outage

Often most of the major carriers will be using the same set of pipes
bridges and railway/highway overpasses. AT&T was advertising their
"redundant path" network where they supposedly made some effort to avoid
this. They were passing out maps and photos of spots with signs from
all the major carriers.

Power, gas, etc. are often on those same bridges.

So if the New Madrid fault were to let loose today with the Big One, how
much transcontinental bandwidth would remain?