The Dover and Delaware River Railroad (reporting mark DD) is a short-line railroad operating along 109 miles (175 km) of track in the northern part of the U.S. state of New Jersey between Phillipsburg and Newark. The railroad is a subsidiary of Chesapeake and Delaware, LLC. The Dover and Delaware River Railroad was created in 2019 to take over local freight operations from Norfolk Southern Railway between Phillipsburg and Newark, leasing and operating the Washington Secondary line between Phillipsburg and Hackettstown from Norfolk Southern Railway and acquiring trackage rights along NJ Transit's Morristown Line, Montclair-Boonton Line, and Gladstone Branch. The railroad also acquired small stretches of track in Washington, Wayne, and Totowa. The Dover and Delaware River Railroad interchang