Following this principle I sometimes think the new east span of the Bay Bridge is/was a $6 billion boondoggle. The historical (and I thought, beautiful) original span was not retrofitted because Caltrans said they could build a new span for less that would have a longer lifespan. The simple, cost effective viaduct design was rejected as not grand enough for a Bay Area bridge and a short decorative, self-anchored suspension bridge was added to the viaduct for an extra $5 billion. It would sure have been nice if that money had been spent on a couple of additional bridges across the bay. One from the 101/380 to the 880 near the Oakland airport would sure help the traffic problems some. With interest rates near zero, I'm sure the finances for a toll bridge would work out. Just need the political will.