The Blairstown Railway opened in 1877 and ran between Blairstown and Delaware, New Jersey, a distance of approximately 12 miles. The single-track railroad was built under the direction of railroad magnate John I, Blair, one of the wealthiest persons in the United States at that time, who had previously built the Warren Railroad, and for whom Blairstown is named. The Blairstown Railway started at what is now Footbridge Park in Blairstown and ended at the Lackawanna Railroads station, the BRWY itself never grew beyond its initial size. Legend has it that Blair built the BRWY so that his wife to be able to travel from their home in Blairstown to New York City and back in one day for shopping. Indeed, given the topography of the Blairstown area, and Blairs penchant for being at least one step ahead of the competition, Blairs strategy was probably to build the BRWY, and wait. Clearly, if it had Blairs intent that the entire BRWY would be used by railroad to connect to the Lackawanna Railroad at Delaware. For the L&NE would use only six miles of the BRWY. But, perhaps this was Blairs plan all along, Blair would die in 1899 at the age of 97. A dozen years after Blairs death, in 1911, Blairstown would receive a second train station and this one, however, would be located on the Lackawanna Cut-Off. As such, the Hainesburg-Delaware section south of Hainesburg Junction − the so-called Delaware Branch − would be abandoned in 1928, the L&NE went out of business in 1961, resulting in the tracks west of Hainesburg Junction being removed. In 1963, the NYS&W removed the tracks from Sparta Junction to Blairstown, and, in the late 1980s, the abandoned rail right-of-way between Sparta Junction and Knowlton Township, New Jersey would become the Paulinskill Valley Trail. The train station in Blairstown was located in what is now Footbridge Park, the parking lot for the park was originally a small railyard, complete with passing sidings, a turntable and engine house, and a coaling dock that is still extant. The footbridge across the Paulinskill River was the one at the site. The present footbridge was dedicated by Blair himself shortly before his death, most of the route of the Blairstown Railway, from Blairstown southwest to Delaware, can still be traced today, although parts of the route have ceased to exist. Indeed, the right-of-way from Footbridge Park to Blairstown Airport is still intact as the Paulinskill Valley Trail. However, the right-of-way has been severed by the airport, with pointing the direction to where the trail continues south of the airport. From there, the old right-of-way can no longer be followed, as it only a short distance. After that, the right-of-way has been obliterated by the widening of U. S. Route 46
A wide-angle view of Footbridge Park in Blairstown, New Jersey from 2011, the starting point of the Blairstown Railway, shows the footbridge into the town of Blairstown (center), the location of the coal docks and skate park (left), the former location of the station (right) and the location of the former rail yard which occupied what is now a parking lot (foreground). This location is a common starting point for hikers and bicyclists using the Paulinskill Valley Trail.
The Blairstown Railway ran adjacent to the opposite side of Station Road in Hainesburg, New Jersey, under the easternmost arch of the Paulins Kill Viaduct on the Lackawanna Cut-Off, as shown in this April 2011 photo. There was no connecting track between the Blairstown Railway and the Lackawanna Cut-Off. Hainesburg Station, on what was the New York, Susquehanna & Western Railroad, was located directly under the viaduct. The remains of the freight station's foundation can clearly be seen in the left-center of the photo. The tracks on the Blairstown Railway were removed from this location in 1963.