I was there today and it was pretty bad on 280N past Silver Ave going into SF but NOT near the stadium or going on 280 S. I think you're good from there at least?
But all near Pier 39 is HORRIBLE traffic. Avoid that area best as possible. Other than that, there wasn't too bad of traffic at all.
[ Edited by chico49erfan on Oct 9, 2010 at 20:05:56 ]