Plan Z for The creators of Plan Z have envisioned this multi-modal plan as an integral part of the Miami LOOP, which would connect the mainland's Commodore Trail, Underline, Ludlam Trail and Miami River Greenway with Biscayne Bay and its waterfront along the Rickenbacker Causeway. 34 Parks & Recreation | J ANUAR Y 2 0 22 | PARK S ANDRECRE AT ION . OR G