New renderings have been released for 343 Madison Avenue, a proposed 1,050-foot-tall office supertall in Midtown East. Designed by Kohn Pedersen Fox and developed by Boston Properties, the 753,120-square-foot structure would contain 748,618 square feet of office space, 2,130 square feet of retail space, and 2,372 square feet that will connect below grade to the future East Side Access project with subterranean circulation paths toward Grand Central Terminal. The building is planned to rise in place of the former Metropolitan Transportation Authority headquarters on half of the block between Madison and Vanderbilt Avenues and East 44th and 45th Streets.
The majority of 343 Madison Avenue will be clad in floor-to-ceiling glass with strips of indented spandrels covering the edges of each floor plate. A double-height lobby space and a corner entrance to the Long Island Railroad are to be enclosed behind clear tall glass panels.
The massing features interspersed setbacks that are highlighted by a series of large multi-story trusses. The setbacks are clearly visible with a background of bronze-colored walls, outdoor terraces and seating above, and a bright lighting scheme that divides the tower into three large chunks of office floors at nighttime. The building will be capped by what looks to be an encased green space with trees.
It seems that the elevator core will be positioned on the back side facing the East River, defined by a rectilinear volume covered with a mix of mostly blank metal panels that run the height of the structure, as well as strips of glass that expose parts of the egress staircases.
Demolition work is underway at the site, with scaffolding covering the majority of the building. This is the last time we will see the old architecture before black netting shrouds the whole exterior.
YIMBY formerly reported that excavation for 343 Madison Avenue is expected to begin in 2022, with construction complete by 2026.