The M1 Grayston Bridge inquiry will resume on 26 September after it was postponed in August last year.

The inquiry seeks to establish the cause of the collapse of the M1 pedestrian and cyclist bridge on 14 October 2015, which resulted in the death of two people and injury to 19 others.

The inquiry was instituted by the Department of Labour in terms of section 32 of the Occupation, Health and Safety Act, and is being conducted by Lennie Samuel.

A number of witnesses have already appeared on behalf of Murray & Roberts, the principal contractor, and Form-Scaff, the scaffolding supplier on the project.

A number of suspected causes for the collapse emerged during last year’s testimony, including that wind together with structural weaknesses was responsible for the collapse of the temporary structures, as well as that structure was not in line with the design.

It is expected that more witnesses will be called and that the inquiry will conclude its business at the end of September 2018.