Just a heads up but on the 1st the new crossing for going south at TJ will be open full time. You have to do a hard right turn, which could be a problem with big rigs, so be in the left lane.
This will a be a better crossing.
Also you can not get your visas till about the 5th at that part of the crossing, though it is reported you can park and walk back to old crossing. I suggest till the 5th if you need a visa you go to Otay Mesa. I have directions for that crossing on the site too.
I have maps and details at http://www.la-ventana.info under travel and at the first section of current events::local talk::today