OUTAGE: five bridges across Mississippi destroyed

Now that I have your attention. My intent with the DLR discussion was to find out how we can estimate, predict, simulate how robust the Internet really is; not debate vendor certifications. Several telephone companies, working together, simulated what would happen to the public telephone network if five bridges across the Mississippi river carrying fiber optic lines were destroyed. The result was the public telephone network was unaffected, according to the participating telephone companies. I believe this was considered the worst scenario at the time. Has anyone, or any group of ISPs done a similar analysis for data and Internet traffic?