Well, Caltrans closed my freeway exit today (Fell St in San Francisco). It's going to be replaced by a boulevard. The last exit to the center of San Francisco just got a mile shorter.
I've heard many arguments on the issue, and many make sense. But some of the supporters of this plan claim that the traffic will be better. I can't decide if this is a lie for their agenda, or if they are really that naive. No matter how well the traffic lights are timed, a mile of elevated freeway is 10 minutes faster than a mile of stoplight traffic. And during rush hour, it's just more lights for 40,000 vehicles to be idling at.