Charenton Metro-Viaduct
The Charenton Metro-Viaduct is a railroad girder bridge located in the French department of Val-de-Marne in the Île-de-France region. It links the communes of Charenton-le-Pont and Maisons-Alfort, crossing the Marne river, as well as the A4 autoroute and 103 departmental road. First put into operation in 1970, the viaduct is used by trains on line 8 of the Paris metro. The total length of the viaduct is 199 m. Made up of steel beams resting on concrete piers, the viaduct has a continuous gradient, due to the difference in level between the two banks of the Marne. It was renovated for the first time in 2011.