The final stage of the Story Bridge's $8.4 million suicide prevention barriers – the three-metre high stainless steel mesh walls on both walkways – will be added from next week.

The three-metre tall wave-shaped mesh walls have been specifically chosen after talks with heritage authorities, Lifeline, the Australian Institute of Suicide Research and Prevention, the Queensland Mental Health Commission and the Queensland Police Service.

Concept design for barriers on the Story Bridge.

Preliminary work begins this weekend to start attaching 530 vertical poles to the bridge superstructure, including the outer handrails on either side of the Story Bridge.

One walkway – the cityside walkway over the Story Bridge - will be closed on Saturday.