Often most of the major carriers will be using the same set of pipes across 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? Michael ----- Michael H. Lambert, Pittsburgh Supercomputing Center 4400 Fifth Avenue, Pittsburgh, PA 15213 Phone: +1 412 268-4960 Fax: +1 412 268-8200