Mont-Saint-Michel Geography Tidal island
The construction of the dam began in 2009. It was completed in 2013. The project was to also remove the causeway and its visitor car-park. The new car-park is on the mainland. A bridge that allows the waters to flow freely around the island will improve the efficiency of the dam in operation. Visitors can walk or use small shuttle buses to cross the causeway. The future bridge will also be open to pedestrians and vehicles without a motor.