Viaduc du Lignon, Road bridge in Monistrol-sur-Loire and Saint-Maurice-de-Lignon, France.
The Viaduc du Lignon stretches 640 meters across the Lignon Valley, featuring a mixed steel and concrete construction that rises 110 meters above the river.
Constructed between 1991 and 1993, the viaduct was officially inaugurated on February 25, 1994, by Prime Minister Édouard Balladur during a formal ceremony.
The bridge establishes a connection between communities in the Haute-Loire department, enabling regular exchanges between residents of Monistrol-sur-Loire and Saint-Maurice-de-Lignon.
Recent safety improvements include the installation of concrete guardrails, waterproofing repairs, and a 2.5-meter barrier to prevent accidents on the National Road 88.
Engineers selected a constant section mixed steel-concrete design over a prestressed concrete structure due to economic benefits and specific wind pattern considerations.
Location: Monistrol-sur-Loire
Location: Saint-Maurice-de-Lignon
Length: 640 m
GPS coordinates: 45.25734,4.14681
Latest update: September 23, 2025 16:45
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