Léopold-Sédar-Senghor bridge, Road bridge over the Pirmil arm of the Loire in Nantes, France

The Léopold-Sédar-Senghor Bridge is a road bridge inaugurated on 3 September 2010, crossing the Pirmil arm of the Loire between the Île de Nantes and Saint-Sébastien-sur-Loire. It is 298 metres long in six spans of 24, 55, 70, 70, 55 and 24 metres, 17.15 metres wide, and rests on five piers. Its deck sits on four steel box girders braced every 5 metres, with a reinforced concrete slab 25 cm thick; the design is by Marc Mimram.

The bridge resulted from a design competition launched in 2005 and opened in September 2010 after several years of construction. It connects the newly developing Île de Nantes with the city center and became part of the broader urban renewal project transforming this island district.

The name, assigned by a municipal council decision of 3 April 2009, honours Léopold Sédar Senghor (1906–2001), poet, writer and former president of Senegal, a leading figure of Négritude. The tribute carries weight in a city whose 18th-century port wealth came mainly from the slave trade.

Visitors can cross the bridge on foot or by bicycle, with paths clearly separated from traffic. Access is level and straightforward from both the Saint-Sébastien side and Île de Nantes, with no steps or obstacles to navigate.

The bridge's four main steel box girders have inclined, skewed webs and are braced every 5 metres; the concrete deck slab is 25 cm thick. The structure sits at a 10° skew to the pier axis, and the sidewalks' brackets are steel. It was inaugurated on 3 September 2010.