tubes were rebuilt in a $29 million project that took place between 2013 and April 2016. To protect the tunnel from future flooding, two retaining walls will be installed on either side of the tunnel portal in Queens, and flex gates would be installed to prevent water from entering the tunnel. The project is estimated to cost $15 million, and work was scheduled to begin in May 2021. References Notes Citations Further reading IRT Corona/Flushing Line from nycsubway.org. Belmont family Crossings of the East River Long Island City Midtown Manhattan New York City Subway infrastructure Railroad tunnels in New York City Tunnels completed in 1915 Tunnels in Manhattan 1915 establishments in New York City