This is the section of The Westgate Bridge which fell while under construction on 15th October, 1970, killing 35 workers.
We lived nearby and I was in school (grade 4) at the time, and I remember an announcement coming over the public address calling children whose fathers worked on the bridge to the office. Thought nothing of it at the time, but gives me chills now.
There is a recently renovated memorial park underneath the bridge span – it’s a beautiful spot.
More information about the disaster and the memory here.