Thedailyreview.com reports that modular units each weighing 51,000 pounds will soon become the newest addition to the RiverStone Inn in Wysox Township, Pennsylvania.  Trucked in from Pleasant Valley Modular Homes, Inc., in Pine Valley, PA, the 27 units each measure 15 feet wide by 60 feet long and will add 40 guest rooms to the inn.  Located 150 feet from the original building, the new building will include a lobby, self-service laundry facilities, a breakfast area, and a business center.  The new facility is expected to be operational within a month, and several of the rooms are already booked.