The Union of Everett interstate route number assigned to the primary tunnel between Florida and Haiti is I-95U, or Interstate 95 Underwater. The portion of the planned Caribbean network, which spans from Miami, Florida to Cap-Haitien, Haiti, is a total of 600 miles of undersea tunnel, which floats 75 meters under the sea, held down with adjustable pylons and high tension cords anchored to the sea floor. The tunnel is designed to compensate for tectonic activity, and in worst case scenarios, seal sections into compartments, and detach from the sea floor anchors to float to the surface and break away into individual floating sections. This design is to preserve lives and reduce damage to the system, allowing for eventual repairs, and resettling and re-anchoring of sections. These sections ca