Crews Install Rebar at Skate Park Crews with Lakebrink Custom Concrete and Hardcore Shotcrete Skateparks worked on the skate park at Optimist Park Thursday, Feb. 14. Crews worked to install rebar in the "bowl" area to prep it for concrete. Skaters can skate inside the bowl, as well as on top. The project is nearly complete and expected to be open this April. Missourian Photo.