With the Feb. 27 opening of Manhattan’s Grand Central Madison—the New York Metropolitan Transportation Authority’s $11.1-billion project that linked Long Island Rail Road lines to Manhattan’s Grand Central Terminal rail and subway hub—the MTA has turned its attention to other capital programs. A major one recently announced is the estimated $7.7-billion northward expansion of Manhattan’s Second Avenue Subway into East Harlem, set to start construction next year. And there are two other, lower-profile projects that are critical to train operations in and out of Grand Central, says MTA. They are the replacements of the terminal’s underground train-shed roof and Metro North’s aged Park Avenue Viaduct, which spans north of the shed.

The next two projects “relevant for this neck of the woods are less glamorous,” but important, said Janno Lieber, the MTA’s chairman and CEO, at a March 22 briefing dubbed Grand Central Reimagined, hosted by Milstein Properties. The viaduct, which serves more than 90% of Metro North commuter trains leaving Manhattan, is “literally like a single point of failure,” said Lieber.

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