Human Error Part 1: De la Concorde Overpass

In September 2006, a bridge collapsed in Laval (a Montreal suburb), resulting in 5 deaths. An inquiry, the Johnson commission, is trying to understand this event and prior incidents.

As always, multiple factors are involved in this accident: bad design, shoddy construction, poor repairs and substandard construction materials. These factors are always boiled down to human errors: a design, planning, executions or maintenance errors.