Viaduc de Nantua

The Viaduc de Nantua is a highway bridge in eastern France that carries traffic across a deep valley. The structure rests on ten concrete pillars that support the roadway spanning more than a kilometer across the landscape.

The project was built in two separate phases, with the first section opening to traffic in 1985. The second phase was completed a decade later, finishing the connection for this key transportation route.

Architect Maurice Novarina incorporated regional architectural elements into the design, reflecting the engineering capabilities of late 20th century French infrastructure.

When crossing, expect regular traffic flow on this motorway section. Keep in mind that the viaduct emerges directly from a tunnel, so adjust your visibility and driving awareness accordingly.

The foundations of the pillars reach depths of up to 21 meters underground to provide a stable base for the structure. This considerable depth was necessary to meet the extreme demands of building over this challenging terrain.

Location: Nantua

Architects: Maurice Novarina

Height: 77 m

Length: 1,003 m

Longest Span: 124 m

GPS coordinates: 46.14140,5.61500

Latest update: December 8, 2025 19:58