Plans for the LIRR connection were revived in the late 1990s. The project received federal funding in 2006, and construction began the following year. The tunnels on the Manhattan side were dug from 2007 to 2011, and the connecting tunnels on the Queens side were completed in 2012. Afterward, work began on other structures related to the line, such as the new LIRR platforms at Grand Central, ventilation and ancillary buildings, communication and utility systems, and the supporting rail infrastructure in Queens.