In 1971 the Seaboard Coast Line Railroad, successor to the Atlantic Coast Line Railroad, purchased the remainder of the L&N shares it did not already own, and the company became a subsidiary. By 1982 the railroad industry was consolidating quickly, and the Seaboard Coast Line absorbed the Louisville & Nashville Railroad entirely. Then in 1986, the Seaboard System merged with the C&O and B&O (known as the Chessie System) and the combined company became CSX Transportation (CSX), which now owns and operates all of the former Louisville and Nashville lines.