The reconstruction of the Seaford Long Island Rail Road station platform is being done in two halves of six-car lengths each. Three or four months ago, the eastern half was removed. Two stairways were demolished and the escalator removed. The most recent work seems to have been the replacement of the supports for the platform. By supports, I mean only those two-inch or so toppings that run parallel to the tracks and apparently will support new concrete slabs. Since the station was opened in 1968, the previous supports, made of steel, rusted and buckled, causing the platform slabs to heave irregularly. In the photo (link below), one can see a new horizontal concrete support replacing what was rusted steel.
See the photo here and also the rest of the album connected to it.