 The Dr. Martin Luther King, Jr. Plaza serves up to 100,000 Amtrak rail passengers each year, making it Ohio's busiest passenger rail hub.In 1996, the Port Authority spent $8.5 million renovating the facility and it now serves as an intermodal train and bus terminal with office space above.Additionally, five freight railroads (Ann Arbor Railroad, Canadian National Railway, CSX Transportation, Norfolk Southern Railway, and Wheeling and Lake Erie Railway) move freight through the region.