On 15 October 1970 at 11.50am, a section of the West Gate Bridge known as span 10-11 suddenly collapsed and fell 50 metres. The bridge had been under construction for two to three years. In total, 35 workers died as a result of the collapse.
A Royal Commission into the incident was set up to examine and report on the faults with the bridge. These were identified in design, construction, supervision, labour management and communication.