Pont de Saint-Cloud
The pont de Saint-Cloud ("Saint-Cloud Bridge") is a French bridge constructed of metal which crosses the Seine between the communes of Boulogne-Billancourt and Saint-Cloud in the French department of Hauts-de-Seine. The first pont de Saint-Cloud appeared in 841 because of a conflict between Charles the Bald et Lothaire I, and consisted of a wooden bridge supporting several mills. The Seine has been traversable from this location for twelve centuries, and tradition holds that no king of France has traversed it without suffering a sudden death. As a result, sovereigns  have crossed the Seine by boat. The wooden bridge was demolished after the death of François I, and in 1556 his son Henri II constructed a new stone bridge consisting of eleven arches. This bridge was in turn demolished during the Second Fronde and replaced with a bridge made of wooden arches. Napoléon ordered its renovation in 1808, giving it a new width of . It was again reconstructed in 1940, expanded another for a total width of . The single-piece deck crosses the entire river, supported by six columns of reinforced concrete. In order to facilitate circulation across the banks , underground passages have been built on the two sides of the river. A metro station on line 10 of the Paris Métro has been named after the bridge.