Derr-Okamoto's skate park opened in 2013. The park is free and has bathrooms on site. The inside of the park contains stair sets, bowls, bank-to-vert walls, and various types of ledges.
Their hours are:
Monday - Friday 7am-7pm
Saturday & Sunday 7am-7pm
Located: 9550 Mainline Drive in Elk Grove, CA.