The above diagram displays the East Side Access project, New York’s newest railroad will connect the Long Island Railroad to Grand Central Terminal. And the tunnel beneath the East River, which will connect the entire system, was started back in 1969.

Images courtesy of Wired

The project is a massive feat of engineering. 1,500-foot-long twin caverns that must be carved out beneath Grand Central, then there is the process of actually freezing the earth above so traffic overhead wouldn’t come toppling down and rerouting and fixing cable and wire as they go so that the trains above don’t come to a crashing halt.

The project is due to finish in 2019, and I look forward to seeing the completed project.