New Orleans Public Belt Railroad

The New Orleans Public Belt Railroad (reporting mark NOPB) is a Class III railroad and a subsidiary of the Port of New Orleans. The railroad provides switching and haulage services for freight traffic moving through the port and interchanges with all six of North America's Class I railroads. It operates 26 miles (42 km) of mainline track and 75 miles (121 km) of total track in the New Orleans area and maintains a fleet of eight locomotives. Operating and capital expenses are funded through operating revenue.

The railroad owns and jointly maintains the Huey P. Long Bridge across the Mississippi River with the Louisiana Department of Transportation and Development, which is responsible for maintaining the roadway. It is estimated that about one-third of the United States' east–west rail freight crosses the Mississippi River over the bridge.

The NOPB was developed by the City of New Orleans in the early 20th century to provide railroads with uniform and impartial access to the Port of New Orleans and to reduce congestion caused by multiple lines terminating along the riverfront. The line began operations in 1908. In 2018, the city transferred control of the railroad to the Port of New Orleans in exchange for the port transferring two wharves along the Mississippi River to the city.