Trezzo sull'Adda Bridge

The Trezzo bridge or Trezzo - Sull'Adda bridge was a medieval bridge in the town of Trezzo sull'Adda in Lombardy (Italy ), which was from 1377 to 1416.

The 1377 finished arch bridge lasted until the onset of the industrial age, the record for the longest span in the world ( 72 meters), in the stone bridge they remained unsurpassed even to the beginning of the 20th century.

The Trezzo Bridge was built in 1370-77 on behalf of the Lord of Milan Bernabo Visconti. She served as access to a Visconti Castle over the river Adda and was reinforced with towers. Already in 1416 she was taken during a siege by weakening one of the bridge abutments intentionally collapse. Their only bow had a wingspan of 72 m, other sources indicate that it should have been even 76 m. This surpassed the Trezzo bridge the second largest pre-industrial bridge arch, the Pont de Vieille -Brioude to almost 18 m. The sagitta of the arc segment was ( elevation of 3.4:1 ) at about 21 m. The vault thickness was measured at the fighters stones, only 2.25 m, corresponding to a favorable ratio of sheet thickness to span of just 1/32. The width of the sandstone bridge was just under 9 m. Today, on the riverbank, the two abutments are still recognizable with her ​​bow approaches.

It was not until 1796, after the introduction of metal construction, the same span in the construction of the English Wearmouth Bridge ( 72 m ) could be reached again. In Steinbogenbau the dimensions of the Visconti - even construction should only be surpassed in 1903 by Adolphe Bridge in Luxembourg.

Evidence

  • Colin O'Connor: Roman Bridges, Cambridge University Press, 1993, ISBN 0-521-39326-4, p oA
  • Donald Hill: A History of Engineering in Classical and Medieval Times, Routledge, 1984, ISBN 978-0-415-15291-4, p oA
  • Ervan G. Garrison: A History of Engineering and Technology, CRC Press, 1999, ISBN 978-0-8493-9810-0, p oA
  • Hans Straub et al.: The history of civil engineering art. An overview from antiquity to the modern era, Birkhauser, 1992, ISBN 978-3-7643-2441-4, p oA
  • Leonardo Fernández troyano: Bridge Engineering. A Global Perspective, Thomas Telford Publishing, London 2003, ISBN 0-7277-3215-3, p oA
  • MG Lay, James E. Vance: Ways of the World: A History of the World 's Roads and of the Vehicles That Used Them, Rutgers University Press, 1992, ISBN 978-0-8135-2691-1, p oA
  • Trezzo Bridge. In: Structurae.

45.6120833333339.5236111111111Koordinaten: 45 ° 36 ' 43.5 "N, 9 ° 31' 25" E

  • Destroyed in the 1410er years
  • Medieval bridge
  • Arch bridge
  • Stone Bridge
  • Bridge in Italy
  • Transport structure in Lombardy
  • Visconti
  • Built in the 1370s
  • Sandstone building
House of Visconti Adda (river) Pont de Vieille-Brioude
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