When I read about proposed public transit projects in Boston that were never built, most of them had actually been _court mandated_ by the Big Dig mitigation lawsuits, but they still didn't get completed. Very mysterious.

To be fair about the 'single small bridge', it seems like smaller projects suffer proportionately larger delays due to being considered low priority, ridiculously lax work scheduling, etc. Although the financial scales are completely different, it takes my city (Toronto) approximately the same time to build a subway extension as to renovate the bike trail that runs near my house.