Penn Station Access (PSA) is a public works project underway by the Metropolitan Transportation Authority in New York City.

The goal of the project is to allow Metro-North Railroad commuter trains to access Penn Station on Manhattan's West Side, using existing trackage owned by Amtrak.

The project is scheduled to complement Grand Central Madison, which opened as part of East Side Access in 2023, and will commence in two separate phases.

The opening of East Side Access will allow the expanded services to operate at Moynihan Train Hall, an expansion of Penn Station.

A 1969 proposal by the North Bronx Transportation Project considered running trains via the Hell Gate Bridge to Penn Station, with travel times estimated to be 25 minutes.

Some plans for the Second Avenue Subway included integration with the upper portion of the line, providing express service from the East Side of Manhattan to Co-op City and Parkchester.

[2] The Penn Station Access project was initiated on September 2, 1999, when the Federal Transit Administration (FTA), in conjunction with Metro-North Railroad, issued a Notice of Intent (NOI) to prepare a Major Investment Study/Environmental Impact Statement (EIS).

The EIS was intended to consider possible additions to Metro-North using existing rail lines, with the intention of providing flexibility and increased regional access.

Using a newly constructed wye track at Spuyten Duyvil, service would turn south via the Empire Connection before reaching Penn Station.

Another option considered would have constructed a wye track at Woodlawn, allowing Harlem trains to go east and head down the Hell Gate Line to Penn Station.

This phase includes the construction of four new Metro-North stations in the Bronx to be served by the New Haven Line, located in Co-op City, Morris Park, Parkchester/Van Nest, and Hunts Point.

[10] The stations would provide fast, direct rides to West Midtown and facilitate reverse-commuting trips to Westchester County and Connecticut.

[17] Since 2014, local residents have pushed to have a Metro-North station built in Queens, either between 41st and 44th Streets in Astoria, or at Northern Boulevard and Broadway in Woodside.

[20] In order to accommodate more trains, power and signal systems, and yards at Penn Station and New Rochelle[21] will be upgraded and three railroad bridges will be rehabilitated or replaced.

Regional connectivity will be increased with accessible transfers to Amtrak, the Long Island Rail Road and New Jersey Transit at Penn Station.

Through-running between the New Haven Line and NJ Transit would be possible, linking business centers in Connecticut and New Jersey while providing access to Newark Liberty Airport.

[30]: 50  The expanded services will operate at Moynihan Train Hall, an expansion of Penn Station into the neighboring James A. Farley Building.

[39] On December 15, the MTA Board approved the award of a 63-month design-build contract for the project to a joint venture of Halmar International and RailWork Transit for $1,850,643,000, of which $133,580,000 was for an option to complete improvements in New Rochelle Yard.

[40] On the same date, the MTA Board approved the awarding of an 86-month contract to WSP USA and Atlas ATC Engineering for project management.

[42] A groundbreaking ceremony for Penn Station Access took place in the Bronx on December 9, 2022,[43][44] marking the official start of construction.

[45] Although the project was initially supposed to be completed by March 2027,[46] MTA officials indicated in January 2023 that the first phase of Penn Station Access could be postponed by six to nine months.

Any Metro-North cars traveling from the Hudson Line to Penn Station would have to be specially equipped to operate with both current collection systems.

[58] Penn Station Access will add new tracks along the Hell Gate Line right-of-way, relocate, reconfigure, and add new interlockings, realign and install new catenaries, construct four new stations, replace and repair undergrade bridges, upgrade existing AC substations, and construct new AC substations.

[59]: 22 It has been proposed to have Harlem Line access to Penn Station as well by reactivating the abandoned Port Morris Branch in the South Bronx.