New York City officials ordered evacuations Tuesday after structural columns buckled and bricks fell from a high-rise building under construction on East 42nd Street.

The incident occurred during the evening rush hour in Midtown Manhattan, creating a significant public safety risk and disrupting one of the city's busiest transit corridors.

Firefighters said columns buckled on the 21st floor [1] of the 33-story structure [1]. The structural failure caused bricks to fall onto the street below, prompting an immediate emergency response. Mayor Zohran Mamdani and other city officials arrived at the scene to coordinate the response as crews worked to secure the perimeter.

Emergency teams ordered the evacuation of nearby structures to prevent casualties in the event of a partial or total collapse [2]. Reports on the extent of the damage varied, with some indicating that two columns buckled on the 21st and 22nd floors, while other reports noted sagging floors between the 21st and 26th levels [3]. Other officials said the primary failure was concentrated on the 21st floor [1].

The building has been the subject of recent redevelopment. While some reports describe the site as a high-rise under construction [4], other records indicate the structure previously housed offices for the pharmaceutical company Pfizer and is currently undergoing conversion [5].

City officials have not yet released a cause for the buckling. Firefighters remained on site Tuesday to monitor the stability of the 33-story tower [1] and ensure the safety of pedestrians, and commuters in the surrounding area.

Columns buckled on the 21st floor of the 33-story building.

This incident highlights the inherent risks associated with the conversion of older commercial skyscrapers into new uses. The structural failure of load-bearing columns in a densely populated area like Midtown Manhattan demonstrates how construction instability can immediately paralyze city infrastructure and necessitate large-scale emergency evacuations.