project, started January 25, 2023. Provision was made for this route on the lower level of the 63rd Street Tunnel under the East River, which carries the New York City Subway's IND 63rd Street Line () on its upper level. The East Side Access project will reduce congestion while increasing the number of trains during peak hours. In addition, the Jamaica station is a major hub station and transfer point in Jamaica, Queens. It has ten tracks and six platforms, plus yard and bypass tracks. Passengers can transfer between trains on all LIRR lines except the Port Washington Branch. The sixth platform opened in February 2020, and exclusively serves Atlantic Branch shuttle trains to Brooklyn. Transfer is also made to separate facilities for three subway services at the Sutphin Boulevard–Archer Avenue–JFK Airport station (), a number of bus routes, and the AirTrain automated people mover to JFK Airport. The railroad's headquarters are next to the station. Passenger lines and services The Long Island Rail Road system has eleven passenger branches, three of which are main trunk lines: Main Line, running along the middle of the island, between Long Island City and Greenport, via Jamaica. Montauk Branch, running along the southern edge of the island, between Long Island City and Montauk, via Jamaica. Atlantic Branch, running mostly in New York City to the south of both the Main Line and Montauk Branch, between Atlantic Terminal and Valley Stream, via Jamaica. There are eight minor branches. For scheduling and advertising purposes some of these branches are divided into sections; this is the case with the Montauk Branch, which is known as the Babylon Branch service in the electrified portion of the line between Jamaica and Babylon, while the diesel service beyond Babylon to Montauk is referred to as Montauk Branch service. All branches except the Port Washington Branch pass through Jamaica; the trackage west of Jamaica (except the Port Washington Branch) is known as the City Terminal Zone. The City Terminal Zone includes portions of the Main Line, Atlantic, and Montauk Branches, as well as the Amtrak-owned East River Tunnels to Penn Station. Current branches The Main Line runs from Long Island City east to Greenport. It is electrified west of the Ronkonkoma station; limited diesel train service runs from this point to the Yaphank, Riverhead, or Greenport stations. Trains using the East River Tunnels from Penn Station join the line at