Selkirk hurdle
The Selkirk Hurdle is the term used by urban planners, railroad employees, politicians, and others to describe the route that must be taken by freight trains traveling between New York City and other points in downstate New York that are east of the Hudson River, and locations in the United States to the south and west. There are no rail freight bridges or tunnels that cross the Hudson River south of Selkirk, which is 10 miles (16 km) south of Albany and the home of Selkirk Yard, a major CSX classification yard.