I went to the same school, and you could get out in 4 years with an engineering degree, but only if everything went to spec. Fail a class, decide you want a minor, decide to do something out of order, or an extended internship and it almost immediately added either a semester or year.
On the flip side Mrs. Selkirk came out in 4 years with BA's in Poli. Sci. and Philosophy and a minor in French mostly because she'd damn smart, but partially because a great deal of her coursework did double duty.
I did it in four. But I attended summer school every year and too 23 credits my last semester (and got a 3.8 that semester; but I lost 15 lbs). If desperate enough, you'll do anything. And baby, I was desperate. Waiting tables and working as a CNA kept me on track--I knew I couldn't do that shit the rest of my life.
I got my engineering degree in 11 quarters. Took a couple accounting classes along the way to meet girls.