My son got off I-10 at Mason Rd and plans to take 1093 to Eagle Lake then to Seguin. There seem to be gas stations along there that have gas, but lines about 100 cars long. Hope his alternate route works out. He got worried when he heard on the radio they wouldn't be opening up the opposite lanes of I-10.
That's one of the routes they just recommended on local TV. They are supposed to be opening contra flows in this order -- I45, I290 and then I10. All the contraflows should be open after 10.
Good luck to your son and God bless.