Construction on the two-track Gateway project, a new tunnel between New Jersey and Manhattan, will commence this summer beneath Related Company’s Hudson Yards redevelopment site. Related Companies and Amtrak will build this 800-foot-long “box tunnel,” which will first serve as a shell for Amtrak’s rail connection linking the Hudson tunnel to Penn Station’s tracks, and, eventually, to the proposed Moynihan Station. The actual Amtrak Gateway Project is still years away, but construction on this first leg of the tunnel is happening now to coordinate with construction on Manhattan’s West Side. The project will be funded by the federal government including some funding from the Hurricane Sandy relief package meant to help mitigate flooding during future storms. It’s estimated to cost between $120 and $150 million.