New York officials said they are “confident” the installation of temporary shoring is stabilizing an under-construction Midtown Manhattan building that was evacuated after structural columns buckled.

A Manhattan high-rise office building being converted into apartments was at risk of partial collapse Tuesday, setting off a scramble to stabilize the structure that shut down several blocks in the he...

Fire officials determined that two columns had buckled on the building’s 21st and 22nd floors and that several floors near the columns were sagging.