Emergencies and World Disasters
Tonnes of Concrete: How a Bridge Fell in Fifteen Seconds
21 min•30 september 2026
Om avsnittet
Tonnes of Concrete: How a Bridge Fell in Fifteen Seconds
A five-hundred-and-seventy-tonne bridge crushed a crowded commuter train in just fifteen seconds, and a portable generator was flattened "like butter" - a detail that survivors and records repeat. How did decades of maintenance decisions, altered road levels and converted wooden carriages combine to turn an ordinary Tuesday morning into the deadliest rail accident in Australian history?
In this episode, we lay out the sequence of events on the morning of 18 January 1977, from the weakened track fastenings and added concrete that nearly tripled the bridge's weight to the converted wooden-bodied carriages beneath it - and ask how a system failure, rather than a single person, produced catastrophe.
Person: Edward Olencewicz
Person: Bill McCrossin
Date: 18 January 1977
Event: Granville rail disaster
Fatalities: 84
- A five-hundred-and-seventy-tonne steel-and-concrete bridge collapsed onto the train in fifteen seconds.
- The front right wheel of locomotive 4620 left the rail at approximately 08:10 after track fastenings allowed the rail to spread.
- Eighty-four people died and two hundred and thirteen were injured in the disaster.
- The wooden-bodied carriages had been converted for suburban use by removing internal compartment walls, leaving roofs supported only by side and end walls.
- Additional concrete poured above the bridge had almost tripled its original weight, increasing load on the intermediate piers.
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© 2026 OBOMEDIA. All rights reserved.
This episode and its content (audio, text, and related materials) are the exclusive property of OBOMEDIA and are protected by applicable copyright laws. Reproduction, distribution, editing, or commercial use, in whole or in part, without prior written permission from OBOMEDIA is prohibited. For permissions, licensing, and business inquiries: [email protected].
A five-hundred-and-seventy-tonne bridge crushed a crowded commuter train in just fifteen seconds, and a portable generator was flattened "like butter" - a detail that survivors and records repeat. How did decades of maintenance decisions, altered road levels and converted wooden carriages combine to turn an ordinary Tuesday morning into the deadliest rail accident in Australian history?
In this episode, we lay out the sequence of events on the morning of 18 January 1977, from the weakened track fastenings and added concrete that nearly tripled the bridge's weight to the converted wooden-bodied carriages beneath it - and ask how a system failure, rather than a single person, produced catastrophe.
Person: Edward Olencewicz
Person: Bill McCrossin
Date: 18 January 1977
Event: Granville rail disaster
Fatalities: 84
- A five-hundred-and-seventy-tonne steel-and-concrete bridge collapsed onto the train in fifteen seconds.
- The front right wheel of locomotive 4620 left the rail at approximately 08:10 after track fastenings allowed the rail to spread.
- Eighty-four people died and two hundred and thirteen were injured in the disaster.
- The wooden-bodied carriages had been converted for suburban use by removing internal compartment walls, leaving roofs supported only by side and end walls.
- Additional concrete poured above the bridge had almost tripled its original weight, increasing load on the intermediate piers.
To listen to this podcast ad-free and access premium episodes, try our subscription with a 14-day free trial at obomedia.com.
© 2026 OBOMEDIA. All rights reserved.
This episode and its content (audio, text, and related materials) are the exclusive property of OBOMEDIA and are protected by applicable copyright laws. Reproduction, distribution, editing, or commercial use, in whole or in part, without prior written permission from OBOMEDIA is prohibited. For permissions, licensing, and business inquiries: [email protected].
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