Nail-biting footage captures a man scaling the cables of the Brooklyn Bridge Thursday morning — snarling rush-hour traffic for about 90 minutes. 

The man — described by police as approximately in his 20s — is shown descending the span as multiple ESU cops look on. 

He began climbing the bridge around 6:30 a.m. and did not come down until about 8 a.m., police said. 

Waiting EMTs placed him on a stretcher, the footage shows. 

He was taken into custody, cops said. It was not immediately clear whether he would face charges or a psychiatric evaluation. 

While the climber was on the bridge, the right and center lanes of the Brooklyn-bound span were closed, according to an NYPD notification. 

The roadways reopened once the man was off the bridge, police confirmed.