The Sussex Railroad (later known as the Sussex Branch of the Delaware, Lackawanna and Western Railroad) was a short-line railroad in northwestern New Jersey. It replaced its predecessor, the Sussex Mine Railroad, in 1853 and operated under the Sussex Railroad Company until 1945 when it was fully merged into the Delaware, Lackawanna and Western Railroad (DL&W) system. The Sussex Railroad was important in the economic development of Sussex County as it supplied a route for early local industries, such as dairy farms and ore mines, to export their products. It was the last independently operated New Jersey railroad to be incorporated into the DL&W system. The last train travelled on the Sussex Railroad tracks on October 2, 1966. The tracks were removed soon after and the right-of-way was tran