I went here a couple of weeks ago, the zoo was very nice, although the bears didn't seem happy at all, their enclosures were very small and it was 90+ out. Otherwise the zoo was great, free of course, parking wasn't too much trouble but I imagine it could be difficult. The worst exhibit obviously was the one with all the small primates riding the carousel.
It's nice to be able to just walk out of the zoo and along the lake.