There is a University exit, but it's a little odd in that it's a U-turn.

I-30 goes over University, so the exit is just past University;

You take the exit & it takes you around 180 degrees so that you find yourself facing east at a traffic light.

Turn left, then almost immediately turn right into the park.

Follow the little trail or lane around til you see a bunch of nutty people with plants all over the place!

(& I'm making signs this year, will place them starting at the park entrance).