How do I support a deck that spans a driveway?
You can install bracing from 4' down on the post at a 45degree angle to the bottom of the header that is so panning the driveway. Use 1/2" x 6" lags to make the connection thru the new 4 x 4 bracing. Make sure that the brace doesn't interfere with getting a car in and out of the garage