http://admission.universityofcalifornia.edu/paying-for-uc/tu...
The Cal State system is basically the same:
https://financialaid.calpoly.edu/coa1819.html
Note, college loans don't only cover tuition (which is not the sole cost of college). They are also needed for room and board. The above links explicitly call that out.
For me, minimising the debt at the far end was important, so I took a heavy course load and worked half time on average. Work experience from that period (IT for the university) was actually quite valuable in the jobs (mainly engineering) I've had in the decade since. Maybe one employer has ever even looked at my school paperwork; I really don't understand the idea of doing nothing but university with that time.
Now take those numbers, multiply them by 12, and add them to the tuition cost.
Now multiply that by four. Near $80-100k? Definitely.