Viaduc ferroviaire de Nogent-sur-Marne, Railway bridge in Nogent-sur-Marne, France.

The Viaduc de Nogent-sur-Marne carries the Paris-Est–Mulhouse line and the Grande Ceinture line over the Marne between Nogent - Le Perreux and Les Boullereaux-Champigny stations. The photograph shows pale grey concrete: a wide central arch springing from massive abutments, thick rectangular piers above a lower deck, and metal railings along the upper deck, where a blue-striped train runs above water and a road.

The viaduct was built in the 19th century with thirty masonry arches, the widest spanning 50 metres. German forces dynamited it on 25 August 1944, and the destroyed arches were replaced with reinforced concrete arches in 1945. In the interim, trains ran from Paris-Bastille station via the line to Marles-en-Brie as far as Verneuil-l'Étang, where they rejoined the historic route. In 1975 the viaduct was extended by the bridge over the A4 motorway.

The viaduct carries the Paris-Est to Mulhouse line and the Grande Ceinture, linking Nogent - Le Perreux and Les Boullereaux-Champigny stations on RER line E. Its name comes from the town it crosses, and the line's route over the Marne has shaped commuting between Paris and the eastern suburbs since the 19th century.

The bridge runs along the Paris-Mulhouse railway line and is visible from the riverbank of the Marne. The best views are from the walking paths along the river or from nearby roads that cross the valley.

The 1945 reconstruction replaced the dynamited masonry arches with reinforced concrete, so the viaduct now mixes its 19th-century abutments with postwar spans. In 1975 it was extended by a bridge over the A4 motorway. From the banks of the Marne, the pale concrete arch and its piers can be seen carrying RER line E trains.