Below the bridge are a series of piezoelectric tiles that act as pressure plates. When a commuter steps on the plate, the tile generates electricity and helps to power the installation. Once this signal is registered, the roots come to life, glowing with colored light. The light passes through the roots that appear to support the bridge, eventually intertwining into the message “LIBERTY” underneath the bridge. The bridge already features a set of LED lights that cycle through the Google color palette, meaning the existing lights can be refashioned to depict the "roots" motif.