A terrible tragedy in Taiwan with the bridge fall. You wonder what type of steel was used to make this bridge if the problem is found to be corrosion.

https://toronto.citynews.ca/2019/10/03/possible-structural-issues-examined-in-taiwan-bridge-fall/

The company responsible for managing the bridge, Taiwan International Ports Corporation, Ltd., earlier said it cleaned the joints and fixed other problems such as rusted steel reinforcements and guardrails in 2017 and 2018.

Experts are also looking into the condition of the bridge’s steel cables, including the possibility of dangerous levels of corrosion

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If the experts find the cause was due to dangerous levels of Corrosion then, the type of materials used for building this structure that collapsed will have a big impact on existing structures around the world.

Nace did do a corrosion study

http://www.g2mtlabs.com/corrosion/cost-of-corrosion/

At over 6.2% of GDP, corrosion is one of the largest single expenses in the US economy yet it rarely receives the attention it requires. Corrosion costs money and lives, resulting in dangerous failures and increased charges for everything from utilities to transportation and more

 In the 15 years that have passed since the study was released, inflation has driven both the direct and indirect costs of corrosion over $500 billion annually, totalling over $1 trillion in 2013 and rising to $1.1 trillion by the end of 2016.

you wonder what the cost of corrosion in the USA is now....1.2 trillion?

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Registration for the NACE corrosion 2020 conference opens Oct. 14, 2019.

The Corrosion 2020 Expo will be held in March 2020 in Texas.

http://nacecorrosion.org/

http://nacecorrosion.org/about