[mrnyc]

^ its supposed to last 40yrs and they are installing sensors to monitor things.



this from a vice interview with branko kleva, head of mta sandy related repairs:

The first thing I learned from our conversation is that the damage from Sandy—and the threat it poses—is not necessarily infrastructural; it’s not that the tunnel itself is about to collapse due to water damage, but that everything inside of it that makes the trains run is essentially fried. (Although they are repairing cracks and leaks in the concrete liner during the shutdown, too.) Because inside the Canarsie Tunnel is a spider-web of electrical cables, for communications, signals, emergency alarms, and, of course, power. The emergency repairs made after Sandy were temporary, explained Kleva, which is why the L runs now. But that won’t last much longer.