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This entry refers to the cast iron arch bridge, now demolished, which crossed the River Seine in Paris. Photo here.
Opened in 1834. Designed by Antoine Rémy Polonceau.
The arch ribs were of a pioneering design, having a laminated wooden core inside hollow cast-iron main arches, bonded to the metal by bitumen.
Henry Hinde Edwards was involved in the construction and in 1842 he described some aspects of the design and construction. The rib castings were produced by the Forges et Fonderies de Fourchamboult under the management of Emile Martin.. Edwards was a partner in the foundry at Chaillot which supplied the castings for the spandrel rings and the balustrades. Edwards, Scipion Perier and Alphonse Chaper of Chaillot were also responsible for the installation and adjustment of all the arch castings and forgings.
Messrs Collin and Victor Lemaire were responsible for the foundations and masonry.
See 'The Iron-Wood Composite Section of the Carrousel Bridge in Paris (1834)' by Jorge Bernabeu Larena for a recent review of the design of the bridge.
The Pont Saint Thomas in Strasbourg, the Pont de Bourguignon-les-Conflans, and the Puente de Isabel II in Seville are surviving examples of this type of structure.
See entry for Puente de Isabel II (Triana Bridge), Seville for information on details of construction of a bridge whose design was based on the Pont du Carrousel.