By Pedestrian TV Published June 17, 2016 Sydney Harbour Bridge has today been shut down and traffic brought to a stand still by a police operation, after a unnamed man climbed to the top. He allegedly jumped out of a cab in the middle of the bridge at around 9:30am, and began climbing up the arch to the top. 7 News footage (below) shows the man sitting at the top of the arch of the bridge, and emergency services attempting to reach him. Sydney Harbour Bridge: Man sitting near the top of the bridge. NSW Police Rescue on the bridge. #7Newshttps://t.co/pGchfAviZK — 7 News Sydney (@7NewsSydney) June 17, 2016 Emergency services are still at the scene, and three city-bound lanes have been closed. Motorists have been warned to avoid the bridge, or expect heavy delays. Cars turning round on Cahill Expressway Sydney Harbour Bridge #traffic police operation pic.twitter.com/G5Q7GLGDgl — Celina Edmonds (@celina_edmonds) June 17, 2016 We will update this story as more details emerge. Source: 7 News. Photo: 7 News.