Division. Trains were re-routed via the Northern Running Track to access the Bergen Subdivision and this part of the Northern Branch became major CSX rail corridor from Upstate New York. At that time, the Northern Running Track was improved to handle the heavier traffic that had formerly used the River Line on the east side of the New Jersey Palisades. New Jersey Transit paid for the project, which included double-tracking the line, changing Marion Junction and Bergen Junction, and building overpasses on Secaucus Road and Paterson Plank Road. The rest of the Northern Branch continues north to the New York state line, and is a minor spur. Route guide The Marion Running Track is a short elevated track connecting the Passaic and Harsimus Line towards Kearny with the Northern Branch. It was built around 1994; prior to its opening, trains accessing the Northern Branch had to go to Journal Square and reverse direction, and the connection included a grade crossing of Newark Avenue (which the new connection overpasses). For these reasons, most freight trains instead used the River Line, passing through the Palisades in tunnels twice. Another grade crossing still exists at Saint Paul's Avenue, under the Pulaski Skyway and Truck US 1-9. This is now the only grade crossing on the Northern Running Track. Just north of this crossing, a second track begins; the line is double-tracked from here to the north end. North of there, the line passes under the former Delaware, Lackawanna and Western Railroad, now part of New Jersey Transit's Hoboken Division in the middle of West End Junction. These bridges were built in 1907, before which the tracks crossed at grade. Just north of the NJ Transit overpasses, the line enters Bergen Junction, and two tracks split to the west from the main line, which heads northwest to Croxton Yard. Soon the line passes over County Road on a rather old bridge. It then passes under Secaucus Road, whose bridge opened on May 20, 2002. The New York, Susquehanna and Western Railway begins at the Land Bridge Terminal, just north of Secaucus Road, and parallels the Northern Running Track, just to the west, all the way to its end. The next three overpasses, over which pass the Northeast Corridor, Route 3, and Route 495, have never been grade crossings. The next overpass, Paterson Plank Road, opened on April 22, 2002. The Northern Running Track ends