All lanes on the Sydney harbour bridge are open again after being closed during the peak morning commuter period because of a protester had climbed on top of the bridge.
Police closed the bridge in both directions to trains, buses, cars and pedestrians at 5am (AEST) on Friday, but reopened them at about 7:30am.
The ABC reports the man used ropes to make the climb and unfurl two pink and white banners over the side of the bridge, reading ''plz help my kids'' and ''kids first''.
Witnesses told the ABC that he eventually abseiled down to land in lane four or five of the bridge, where he was arrested.
Earlier, the man, who said he was "ex-military", made calls to a number of media outlets. He told Triple M radio:
''There are systematic fails in both federal and state governments... the police and also the school systems that are letting our children down. And the children don't have a voice,'' he said.
''There is a major failure in the fact that there's no-one looking after our kids when parents separate and divorce.
''I've been pushed and pushed and pushed. I'm not just doing this for me, I'm doing this for my kids."
Motorists were advised to expect significant delays during the morning rush hour.