The Waco fertilizer plant explosion (2013), cause determined to be arson (2016)
San Francisco Bay Bridge seismic bolt failures (2013), caused during construction: https://www.nace.org/CORROSION-FAILURES-San-Francisco-Bay-Br...
The Fukushima Daiichi nuclear disaster (2011), design/regulatory failure
And so forth: https://en.wikipedia.org/wiki/Category:Industrial_disasters_...
And so on: https://en.wikipedia.org/wiki/Category:Engineering_failures
Serious engineering failures are still happening. Sure, the most famous ones may be decades old, but those aren't the only ones.