Cize–Bolozon viaduct

The Cize–Bolozon viaduct is a combination rail and vehicular viaduct crossing the Ain gorge in France connecting the communes of Cize and Bolozon in the Ain département.[1][2]

Cize–Bolozon viaduct
A view of the viaduct from the southwest while crossed by an upper-level TGV
Coordinates46°12′56″N 5°27′04″E
Carries
CrossesAin gorge
LocaleFrance
Characteristics
Total length273 metres (896 ft)
Height73 metres (240 ft)
No. of spans11
History
ArchitectJean-François Blassel
Opened1875 (1875)

An original span built in the same location in 1875 was destroyed in World War II.[3][4] Reconstructed as an urgent post-war project due to its position on a main line to Paris,[5] the new viaduct reopened in May 1950.[1]

It carries road and rail traffic at different levels: the railway, which was closed for reinforcement and restoration in 2005, occupies the upper level. Part of the Ligne du Haut-Bugey,[6][7] it reopened in December 2010[8] as part of the international Paris–Geneva line. The local road from Poncin to Thoirette uses the lower level.

References
  1. Debachy, R. (July–September 1950). "Le viaduc de Cize Bolozon". Visages de l'Ain. 11: 43–45.
  2. "Tourisme & Paysages". 2010-12-14. Retrieved 2010-12-14.
  3. "Cize–Bolozon Viaduct (1875) – Structurae". 2010-12-14. Retrieved 2010-12-14.
  4. "RFF Haut-Bugey – Les travaux en images". 2010-12-14. Retrieved 2010-12-14.
  5. "Rapports et délibérations / Département de l'Ain, Conseil général". October 1945. p. 348.
  6. "Haut Bugey line". 2006-10-08. Retrieved 2010-12-14.
  7. "RFF Haut-Bugey – Les travaux en images". 2010-12-14. Retrieved 2010-12-14.
  8. "Railway Gazette: Haut-Bugey line inaugurated". 2010-12-14. Retrieved 2010-12-14.
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