Australia's largest privately owned construction company, Grocon, has been charged over a fatal wall collapse in Melbourne.

Bridget Jones, 18, her brother Alexander, 19, and French national Dr Marie-Faith Fiawoo were killed when a brick wall collapsed on them in high winds on Swanston Street in Melbourne's CBD in March 2013.

The wall was on a Grocon building site.

A Grocon spokesman has confirmed WorkSafe has filed criminal charges in the Melbourne Magistrates Court against the construction company and Aussie Signs, which was contracted to hang advertising on the wall.