I am referring to something like this. I converted all the bridge lighting to lights and called it at 2 1/2 days kind of cheated with the ps blur tool. I could of baked it longer http://fav.me/d4zm4gu

This one http://fav.me/d4zna8d with 3 mesh lights took only 3 to 4 hours. I tried the one above for heck of it without the converted lights and it too would rendred in a few hours..