Colle Isarco Viaduct

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Colle Isarco Viaduct
Viadotto Colle Isarco
Gossensass Bridge
Viadotto Gossensass
Colle Isarco, Trentino-Alto Adige, Italy
361 feet high / 110 meters high
535 foot span / 163 meter span
1969

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One of the longest and highest viaducts on the Brenner highway between Italy and Austria, the Colle Isarco has a cantilevered central span of 535 feet (163 mtrs). In the period of 1998 and 1999 repair work was made as well as in 2007. In 2015 retrofits were undertaken to strengthen the bridge with an external post-tensioning system.

Like many Italian bridges of the 1970s, a belly span makes up the middle third of the main span. For the approach spans, A-frame piers are topped with long hammerhead caps that support - what else! - more suspended concrete belly spans. The entire viaduct measures 3,375 feet (1028.8 meters) in length. The bridge is located at the very start of SS49 near its junction with the A22 Brenner highway.


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Image by Fondazione Ing. Lino Gentilini.


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Image by Fondazione Ing. Lino Gentilini.


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Image by Fondazione Ing. Lino Gentilini.


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Image by Fondazione Ing. Lino Gentilini.


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Image by Fondazione Ing. Lino Gentilini.


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Image by Fondazione Ing. Lino Gentilini.


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Colle Isarco proposal.


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Colle Isarco Viaduct satellite image.


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Colle Isarco Viaduct location map.