A Brisbane councillor has threatened to lock himself to construction equipment and delay the construction of the long-anticipated Woolloongabba Bikeway if a proposed extra traffic lane was not scrapped.

At the first meeting back after a five-week recess, Greens councillor Jonathan Sri said that while he was a strong supporter of bikeway projects, he would go to extreme measures if a proposed third lane on Vulture Street was implemented.

The construction of the Woolloongabba Bikeway will start in early 2019.

The extra lane was listed within the works package for the construction of the Woolloongabba Bikeway project and Kangaroo Point Bikeway Project Stage 1C.

The two bikeways would connect near the Vulture Street intersection.