Pont Eiffel de Conflans-Sainte-Honorine, Railway bridge in Conflans-Sainte-Honorine, France

The Pont Eiffel is a double-track railway bridge over the Oise between Conflans-Sainte-Honorine and Andrésy, on the Paris-Saint-Lazare to Mantes-Station line. Its deck is a blue-green steel truss of repeating triangles resting on light grey stone piers, with a small yellow diamond sign at mid-span. Tanker railcars stand on the tracks above.

The original structure was built in 1892 and suffered severe damage during World War II. It was completely reconstructed after 1947 by the Bacci company.

The name Pont Eiffel survives from the 1892 structure, whose metalwork was built by the Eiffel company; the current 1947 bridge has no link to that firm. Residents still call it Pont Eiffel, and several nearby shops use the name. The Transilien stop long called Conflans-Pont-Eiffel became Conflans-Fin-d'Oise after the RER station was rebuilt.

The bridge carries Line J trains running between Paris and Mantes. Visitors can best view it from the riverbank or paths along the Oise.

The 1947 deck was built by the Société des ponts et travaux en fer (SPTF) and the piers by the Bacci company, so nothing of the structure comes from the Eiffel company. The nearby Transilien stop, long called Conflans-Pont-Eiffel, became Conflans-Fin-d'Oise when the RER station of that name was rebuilt on the Cergy branch of line A.