If you take Diplomat Don's advise and come up 99, don't take 4 in Stockton. Like I said I-5 north of 4 is a mess in Stockton right now. They are completely replacing the freeway so it's on one of those messes where the entire roadway is over on one side and when the one side is done they'll shift it all back over. If you come that far on 99 just take it all the way up to Sac. It's about 50 miles further from Stockton to Sac.