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Pont de Cormontaigne or Pont-écluse Sud, one of the two historical covered bridges protecting the canal des fortifications in Thionville; Moselle, France.
Louis de Cormontaigne (1696 at Strasbourg – 1752 in Metz) was a French military engineer.
He was the successor of Vauban. Together, they designed the fortifications of Metz.
An arch bridge he built in Thionville, Moselle between 1745 and 1746, named Cormontaigne Bridge after him, is still in use today.