On 20 Jul 2001, Sean Donelan wrote:
The Baltimore Sun has a graphic showing the re-routed fiber optic line.
http://www.sunspot.net/news/local/bal-traingridlockmap.graphic
There's an archived story about the history of the tunnel: http://www.sunspot.net/news/local/bal-traintunnel.story This is an interesting note for those wondering how the cables were physically snapped: "The tunnel also has a second use. An MCI fiber-optic cable trunk line suspended on the tunnel's west wall carries thousands of long-distance phone calls." It seems less than a derailment could cause some damage... I assume(???) that it's in heavy conduit of some sort, but it seems even some maintenance or other activities could snag something and cause a similar outage... Charles