The Memphis Suspension Railway or Mud Island Monorail is a suspended monorail that connects the city center of Memphis with the entertainment park on Mud Island. Celebrating its grand opening on July 3, 1982, it is located beneath a footbridge over the Wolf River Lagoon connecting to the southern tip of Mud Island. At the time of its construction, the U.S. Coast Guard stated that the proposed bridge would have to have the same clearance as the Hernando de Soto Bridge, as it was spanning a commercially used public waterway. This resulted in the bridge being constructed at its current elevation.