In a move that will affect one million passengers a year, all Amtrak trains bound for Grand Central Terminal will, beginning March 7,, go to Pennsylvania Station instead.

The project will shift 20 trains a day serving upstate New York and Canada to Penn Station, which has had about 100 Amtrak trains a day carrying 5.5 million passengers a year, according to an Amtrak spokesman, R. Clifford Black 4th.Only Metro-North commuter trains, primarily serving Connecticut and Westchester County, will continue to use Grand Central.

The change brings the first direct rail connection between the Hudson Valley and Delaware Valley through Manhattan. Passengers from Albany bound for Florida, for example, will be able to make a quick connection within Penn Station. New Jersey Transit and Long Island Rail Road passengers will also have a direct connection for upstate trains. Amtrak officials said the bypass, which has been sought for decades, was expected to attract an additional 120,000 passengers in its first year of operation.