Getting up in the morning and encountering a major traffic jam on your way to the office can definitely put a damper on your day. If you could be informed about such events before you leave, it would certainly be more beneficial. These are local bookmarks for the San Antonio area that you may find helpful.
Texas Department of Transportation
TXDOT San Antonio Detailed map but can appear cluttered.
SigAlert.com
Good for quick glances. Difficult to use on PC. Probably best for phone/tablet.
Waze
Good overview but no cameras.
Detailed Traffic Sections. No cameras.