Coming from North on the I5:

1. Head south on I-5 S toward Exit 28
2. Take exit 28 for La Jolla Village Dr
3. Turn Right at La Jolla Village Dr
4. Go straight through Intersection and stay right to exit La jolla Village Dr to Gilman Dr.
5. Turn Right at Gilman Dr
6. Turn Left onto Scholars Dr S and follow to parking lots

Park in the lots at the intersection of Scholars Dr S and Revelle College Dr. (Paid parking)
Walk North to "Ridge Walk" and look for Bonner Hall on your Right.
Google maps link