Trezzo Bridge

from Wikipedia, the free encyclopedia
The Trezzo Bridge connected the Visconti festivals with the opposite bank. On the left you can see an abutment with an arch attachment.

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

The single arch bridge, completed in 1377, held the record for the largest span in the world (72 m) until the beginning of the industrial age , and in stone bridge construction it remained unsurpassed until the beginning of the 20th century.

The Trezzo Bridge was built between 1370 and 1377 by order of the Lord of Milan Bernabò Visconti . It served as access to a Visconti castle across the Adda river and was reinforced with towers. As early as 1416 it was deliberately brought to collapse during a siege by weakening one of the bridge abutments. Its only arch had a span of 72 m, according to other sources it should have been 76 m. The Trezzo Bridge exceeded the second largest pre-industrial bridge arch, the Pont de Vieille-Brioude , by almost 18 m. The arrow height of the segment arch was approx. 21 m (cant of 3.4: 1). The vault was only 2.25 m thick , measured against the fighter stones , which corresponded to an advantageous ratio of arch thickness to span of only 1/32. The width of the sandstone bridge was almost 9 m. Nowadays the two abutments with their arches can still be seen on the river bank.

It was not until 1796, after the introduction of metal construction, that the same span could be achieved again with the construction of the English Wearmouth Bridge (72 m). In the stone arch construction, the dimensions of the Visconti building were only supposed to be surpassed by the Adolphe Bridge in Luxembourg in 1903.


proof

  • Colin O'Connor: Roman Bridges , Cambridge University Press, 1993, ISBN 0-521-39326-4 , pp. OA
  • Donald Hill: A History of Engineering in Classical and Medieval Times , Routledge, 1984, ISBN 978-0-415-15291-4 , pp. 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. An overview from antiquity to modern times , Birkhäuser, 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
  1. ↑ a b c d e f g h i j Hans Straub et al. (1992), pp. 79f.
  2. ^ A b Donald Hill (1984), p. 72
  3. ↑ a b Ervan G. Garrison (1999), p. 123
  4. ↑ Leonardo Fernández Troyano (2003), p. 93
  5. ↑ a b M. G. Lay, James E. Vance (1992), p. 268
  6. ↑ Leonardo Fernández Troyano (2003), p. 116
  7. ↑ Colin O'Connor (1993), p. 188
  8. ↑ Leonardo Fernández Troyano (2003), p. 49

Coordinates: 45 ° 36 ′ 43.5 ″  N , 9 ° 31 ′ 25 ″  E