With respect to "extraordinary cost" I direct your attention to the new, $600 million, less than one mile 6th Street Viaduct that L.A. just built, which just opened but they had to immediately close. That is a boondoggle.

I also direct your attention to the east span of the Bay Bridge, which came in 800% over budget and 25 years late.

But oddly the yammering nerd army never discusses the monumental failures of car infrastructure.