Gone is the “Art Bay,” with a glass garage-like door that would have allowed visitors to enter galleries straight from the street.
Gone, too, is the fourth-floor “Gray Box,” with acoustic absorption panels through which passers-by could have peered up at performance art in progress.
And there will be no new public entrance to the sculpture garden on 54th Street.
The Museum of Modern Art has eliminated these polarizing elements of its sweeping redesign, museum officials said on Tuesday in disclosing new details about the project. MoMA officials also said that construction would begin in February — two years after they first announced the undertaking — and provided the first official cost estimate: $390 million to $400 million.
The overhaul, which would add about 50,000 square feet of exhibition space, is the museum’s second major building project in just over a decade. In 2004, its Midtown home reopened after a reconfiguration by the Japanese architect Yoshio Taniguchi, at an overall cost of $858 million. […]