The largest of these projects is at Jamaica station. As part of the Jamaica project, the MTA is constructing a new platform for the Atlantic Branch, as well as re-configuring track layouts and installing high-speed switches. After the project is complete, the Atlantic Branch would function as a high-frequency shuttle service to Atlantic Terminal, and all trains from Long Island would proceed to either Long Island City station, Penn Station, or Grand Central via the Main Line. The first phase of the project, which includes the new platform, is planned to be complete in the fourth quarter of 2019 at a cost of $301.6 million.