An even more egregious example would be the East span of the Bay Bridge, which was known to be structurally unsafe since the 1950s, collapsed in 1989, and wasn'

An even more egregious example would be the East span of the Bay Bridge, which was known to be structurally unsafe since the 1950s, collapsed in 1989, and wasn't actually replaced until 2013. So 24 years and $6.5 billion to build (really fix) a 2 mile bridge. The entire original bridge (both spans, plus the Yerba Buena tunnel) cost less than $1.4 billion in 2013 dollars, and was built in around 3.5 years.