A far more costly (and frightening) example is the Eastern Span of the SF Bay Bridge, e.g. http://www.latimes.com/local/lanow/la-me-ln-bay-bridge-report-201401

A far more costly (and frightening) example is the Eastern Span of the SF Bay Bridge, e.g. http://www.latimes.com/local/lanow/la-me-ln-bay-bridge-report-20140123-story.html http://www.latimes.com/local/lanow/la-me-ln-bay-bridge-repor... http://www.nbcbayarea.com/news/local/Caltrans-Allowed-Bad-Welds-in-New-Bay-Bridge-Report-Says-241598471.html http://www.nbcbayarea.com/news/local/Caltrans-Allowed-Bad-We... And things are known to be even worse than these older stories imply. I couldn't find a good, concise summary of the problems, costs, and long-term effects.