The Briare Aqueduct carries the Canal latéral à la Loire over the River Loire on its journey to the River Seine in France. It replaced a river-level crossing from the canal to meet the Briare Canal that was hazardous in times of flood. Between 1896 and 2003 it was the longest navigable aqueduct in the World until the opening of the Magdeburg Water Bridge.
The Briare aqueduct near Châtillon-sur-Loire was, for a long time, the longest steel canal aqueduct in the world. The aqueduct is 662 metres long and lost its title of longest aqueduct to the Magdeburg Water Bridge which crosses the Elbe and is 918 metres long. The aqueduct was designed by the engineers Léonce-Abel Mazoyer and Charles Sigault. The masonry abutments and piers were completed between 1890 and 1896 by Gustave Eiffel and the steel channel was completed by Daydé & Pillé of Creil. The aqueduct was inaugurated on 16 September 1896 with the crossing of the boat Aristide, belonging to Ernest Guingamp. It allowed the development of transport to the Freycinet gauge between the Loire and Seine, and is a registered historic monument in France.
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