. . . "Two railroad tracks withoverhead lines(Northeast Corridor)" . . . . "56" . . "1907" . . . . "6" . . . . "9" . "505.84608" . "38" . "49.0728" . "12" . . . . "Amtrak Old Saybrook\u2013Old Lyme Bridge" . . . . . . . . . . . . . . . "1907" . . . "Connecticut River Railroad Bridge" . . . "Amtrak Old Saybrook\u2013Old Lyme Bridge" . . .