Bergen Subdivision

River Subdivision
Southbound train on River Subdivision at Newburgh
Overview
Type	Freight rail
Locale	New Jersey New York
Operation
Owner	CSX Transportation
Technical
Track gauge	1,435 mm (4 ft 8 1⁄2 in) standard gauge

The River Subdivision is a railroad line owned by CSX Transportation in the U.S. states of New Jersey and New York. The line runs from the North Bergen Yard in Hudson County, New Jersey north to Ravena, New York along the alignment of the West Shore Railroad, a former New York Central Railroad line.

The original line was opened in segments by a number of different companies from the 1860s to the opening of the full line in the 1880s, by which time it was known as the New York, West Shore and Buffalo Railway. Through mergers, leases, and takeovers, it became part of the New York Central Railroad and then Conrail in 1976. When the majority of Conrail was broken up in 1999, its River Line was assigned to CSX Transportation.

The River Subdivision (also known as the River Sub or River SD) is a major north-south rail corridor located between Bogota, New Jersey and Ravena, New York, carries strictly freight trains and runs mostly along the shoreline or paralleling closely to the west bank of the Hudson River. The River Subdivision is part of the CSX Albany Division, which in turn is part of CSX's Northern Region of Operations.

The CSX designated subdivision code for the River Subdivision is "RI", with the River Subdivision falling under the "NI" dispatchers desk since March 8, 2009. It had been part of the "NJ" dispatchers desk until this date. Mileposts and locations along the River Subdivision are denoted by the CSX milepost prefix: "QR".