入口和出口门对双管隧道的设计，每个3900英尺长，41英尺直径达到水下120英尺的深度。 隧道连接PortMiami（位于比斯坎湾的一个岛上）与沃森岛，交通流向麦克阿瑟铜锣（国道A1A / 1-395），连接迈阿密海滩到迈阿密和大陆。整个项目包括一个隧道在政府切 ，道奇工程对道奇和沃森岛和麦克阿瑟铜锣桥拓宽。

The design of Entrance and Exit Portals to twin tube tunnels, each 3,900 feet long and 41 feet in diameter reaching a depth of 120 feet below the water. The tunnels connect PortMiami (located on an island in Biscayne Bay) with Watson Island where traffic flows to the MacArthur Causeway (State Road A1A/1-395), connecting Miami Beach to Miami and the mainland The overall project includes a tunnel under Government Cut, roadway work on Dodge and Watson Islands and MacArthur Causeway Bridge widening.