From: finfer@optonline.net   
      
   On 10/9/2014 12:49 PM, John Levine wrote:   
      
   > I expect it's the same ballast that they installed in 1910, with the   
   > rails and ties replaced as needed.  Have any of the tunnels been   
   > closed for more than a few overnight hours since they were opened?  I   
   > don't think so.   
      
   One track is regularly taken out of service for entire weekends.  That's   
   the longest window they can get.  The trains are scheduled so they can   
   be fleeted each way between A and Bergen without creating delays.   
      
   Michael Finfer   
   Bridgewater, NJ   
      
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