Four members of the Extinction Rebellion have locked themselves inside a canoe which had been placed on Victoria Bridge.
Police received a call about the disruption just before 7.30am and had moved the group off the road by 7.45am.
A police spokesman told news.com.au officers had to drag the canoe off the road with the protesters still inside as they had locked themselves in with elbow locks.
Police and emergency crews are working to release them
The protest was lifestreamed on the Extinction Rebellion Australia Facebook page.
“Four brave activists began this morning blocking Victoria bridge in Brisbane’s CBD, blocking traffic in peak,” the page wrote next to a video.
“They have now been removed by police. Please share and support these brave young people standing up for their future and yours.”
Both directions on Victoria Bridge were briefly closed while police moved the canoe, but all lanes have since been reopened.
Traffic is still moving slowly as drivers pass through.
This is the second time in less than a fortnight that protesters have caused chaos on Brisbane roads.
On June 17, two members of the group glued themselves onto the road in a similar protest.
It took three hours to remove them from the scene.
A message on the group’s Facebook page labelled these types of disruptions necessary and warned that they would continue to increase up until August 6.