NEW HAVEN — The state revealed plans Tuesday to spend $402 million to rebuild and lengthen all four platforms at New Haven’s Union Station and put a grand, European-inspired atrium and canopy over them. Work would begin in the spring of 2029 — and plans, which are 30% complete, could change before then, Department of Transportation engineers and planners said at a public meeting Tuesday night. Much of the project would be funded by the federal government, officials said. Under the plan, the platforms would be replaced and extended, with work to be phased. The DOT would work on one platform at a time to try to minimize any disruption to service, said Jonathan Kang, a DOT supervising engineer and project manager. Work would progress from the platform farthest from Union Station to the one closest to the station, while keeping the three other platforms in service, officials said. Access to the platforms would remain throughout construction, Kang said. “The idea for this project is to build one canopy to encompass all of the future platforms,” Kang said. The atrium and canopy design, would protect travelers from the elements but allow plenty of light in through extensive side windows, overhead skylights and a glass end enclosure, he said. The design was inspired by the Central Station in Vienna, Austria, said Zuhair Hussaini, an architect who worked on the atrium.

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