This isn't exactly a road issue, but a lot of visitors use SFO for both international and domestic flights.
The crash has closed 2 of the airport's 4 runways, and the 2 that are open don't handle jumbo jets very well. There are a lot of delays and cancellations due to this, and they are estimating this will continue for about a week. If you were planning on flying in or out of SFO this week, you may want to reroute if possible. Other large airports in the SF Bay area are Oakland and San Jose, or you may want to look at LAX for international flights.