The late 1990s saw another improvement with the Norfolk Southern Railway double tracking the segment south of Somerset, Kentucky, between Tateville and KD Tower (near Greenwood, Kentucky). As of 2013, a massive project is underway to double track from Woods, also known as Somerset, to Grove just north of Burnside. This project will straighten a curve near the Kentucky Route 914 bypass overpass, allowing for improved train handling. NS planners and engineering officials are still tinkering with and improving the company's second most profitable line, including the initial $65 million in line improvement projects from 1959 to 1963 and 1996 to 2010, Norfolk Southern is projected to have spent over $1 billion in a span of 60 years.