A New Jersey police officer tackled a suicidal man seconds before he was going to leap off a bridge, dashcam video of the tense encounter shows.

Riverdale police Sgt. Greg Bogert pulled up to the man on Route 287 near exit 53 at about 11:30 a.m. Monday after multiple reports of a man walking on the ledge of the bridge.

The man was walking in front of a car on the shoulder of the busy road when Bogert pulled up to the scene.

“I remember saying, ‘It’s not worth it, stay calm,'” Bogert told NBC 4 New York Tuesday.

When Bogert asked the man a question and tried to calm him down, the man sprinted for the ledge, according to the video.

Bogert chased him, yelling, “Don’t do it! Don’t do it!” before he caught up to the suicidal man. He tackled the man, pulling him to the ground just before he reached the ledge, the video shows.

“A lot of people don’t realize how fast things happen for us, so a lot of it was instinct and reaction, more than training,” said Bogert, an 18-year veteran of the force.

The man continued to struggle, and Bogert held him down on the highway.