Construction of Manhattan’s largest outdoor roof deck progresses

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Manhattan’s largest outdoor roof deck is being built atop the ten-story 341 Ninth Avenue in West Chelsea. Tishman Speyer and the United States Postal Service are collaborating to renovate the 2.2-million-square-foot Morgan North Postal Facility, which was constructed in 1933 and spans a full block from Ninth to Tenth Avenues and West 29th to West 30th Streets. When finished, the tower will include a 2.5-acre landscaped rooftop, as well as over 5,000 square feet of ground-floor retail along Ninth Avenue, and freshly refurbished and upgraded office levels. Prior to the project, CBRE represented USPS in discussions with Tishman Speyer.

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The demolition and replacement of the main roof on the seventh story, comprising 150,000 square feet, is being handled by King Contracting Group. The USPS will continue to function on the lower four floors of the building, which is one of the nation’s largest mail-processing facilities and has a bridge connecting to the Postal Service’s Morgan South facility across 29th Street. This addition was erected in 1992 and is not included in the sale. Inside the main Art Deco-style structure, floors five through ten will be completely renovated, as they were unoccupied at the time of the authorized 99-year lease deal.

Three dedicated lobbies and elevator banks will be located along Ninth Avenue, West 30th Street, and Tenth Avenue. Floors five and six will feature floor plates of more than 200,000 square feet apiece, a size rarely seen in New York City and seen in only a few existing structures. Floor seven will have 78,000 square feet of space and will lead to the roof deck. The upper three floors will have around 48,000 square feet of floor space, with the eighth story opening onto a smaller rooftop patio that overlooks the bigger one.