The joint venture involves the contribution of KCS' 320-mile line between Meridian and Shreveport, to the joint venture company and an NS investment of $300 million in cash, substantially all of which will be used for capital improvements to increase capacity and improve transit times over the line. The transaction was subject to regulatory review from the U.S. Surface Transportation Board (STB), which was completed April 10, 2006. And on May 1, 2006, KCS and NS closed on the deal. By September 2007, about $135 million had been spent on the improvements. Since the completion of the first round of improvements, approximately 45 trains per day traverse the line.