An NYPD officer was seriously injured when a garage door collapsed onto her leg at a Brooklyn station house, police said.

The officer was walking to a police van inside the garage at the 78th Precinct at about 7:20 p.m. when the metal roll-down gate came crashing down, pinning her leg, cops said.

Officers on scene were able to free the officer, who was taken to New York-Presbyterian Brooklyn Methodist Hospital.

She was conscious and alert, but suffered a severe injury to one of her legs, police said.

Photos from the scene show the metal gate being propped up by a car jack.