 The Rensselaer Iron Works eventually became part of the larger Troy Iron & Steel Company, in its time the largest iron and steel manufacturer in the United States, but the company eventually went out of business.The New York Central remained one of the most significant American railroads through the end of the 19th Century; it was eventually merged with its arch-rival, the Pennsylvania Railroad, and ultimately became a part of Conrail in the 1970s.Parts of the New York Central, including parts of the original Utica & Schenectady, are still in use today by CSX.