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General Rafael Urdaneta Bridge

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Title: General Rafael Urdaneta Bridge  
Author: World Heritage Encyclopedia
Language: English
Subject: Lake Maracaibo, Riccardo Morandi, Road bridges, Zulia, Leopoldo Sucre Figarella
Collection: Bridges Completed in 1962, Buildings and Structures in Maracaibo, Cable-Stayed Bridges in Venezuela, Concrete Bridges, Lake Maracaibo, Road Bridges
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General Rafael Urdaneta Bridge

General Rafael Urdaneta Bridge
Coordinates
Carries vehicles
Crosses Lake Maracaibo
Locale Maracaibo, Zulia, Venezuela[1]
Characteristics
Design Cable-stayed bridge[1]
Material reinforced concrete[1]
Total length 8.7 kilometres (5.4 mi)[1]
Height 86.6 metres (284 ft)[1]
Longest span 235 metres (771 ft) x 5
Number of spans 135
History
Designer Riccardo Morandi
Construction begin 1958[1]
Construction end 1962[1]
Construction cost Bs. 350 million[2]

The General Rafael Urdaneta Bridge is located at the outlet of Lake Maracaibo, in western Venezuela. The bridge connects Maracaibo with much of the rest of the country. It is named after General Rafael Urdaneta, a Venezuelan hero in the War of Independence.

Contents

  • Design and construction 1
  • History 2
  • See also 3
  • References 4
  • Notes 5
  • External links 6

Design and construction

Made of reinforced and prestressed concrete, the cable-stayed bridge spans 8,678 metres (5.392 mi) from shore to shore. The five main spans are each 235 metres (771 ft) long.[3] They are supported from 92-metre (302 ft) tall towers, and provide 46 metres (151 ft) of clearance to the water below.[4] The bridge carries only vehicles.

General Rafael Urdaneta Bridge panoramic

The competition to design the bridge started in 1957 and was won by Riccardo Morandi, an Italian civil engineer. Morandi's was the only concrete design out of twelve entries, and was expected to be less expensive to maintain, as well as providing valuable experience of prestressed concrete technology for Venezuela.[4] Construction was carried out by several companies, including Grün & Bilfinger, Julius Berger, Bauboag AG, Philipp Holzmann AG, Precomprimido C.A., Wayss & Freytag and K Ingeniería.

According to eminent bridge engineer Michel Virlogeux:[3]

"the Lake Maracaibo Bridge deserves to be part of the series of the most famous bridges over the world, with the Golden Gate Bridge, the bridge over the Firth of Forth, the Brooklyn Bridge, and the Garabit Viaduct."

History

It was opened on 24 August 1962 by the then-president of Venezuela Romulo Betancourt.

In April 1964, parts of the bridge collapsed after a collision with the tanker Esso Maracaibo causing the deaths of seven people.

The construction of a second cable-stayed bridge has been proposed since 1982, with a series of studies made since 2000. The cost of the new bridge has been estimated at US$440m, to be largely privately financed via tolls.

See also

References

  • Dupré, Judith: "Bridges", Könemann, 1998, ISBN 3-8290-0408-7
  • Virlogeux, Michel: "Bridges with Multiple Cable Stayed Spans", Structural Engineering International, 1/2001

Notes

  1. ^ a b c d e f g Maracaibo Bridge at Structurae
  2. ^ Venezuela Tuya - Maracaibo, retrieved 6 August 2014 
  3. ^ a b Virlogeux, p.61
  4. ^ a b Dupré, p. 91

External links

  • General Rafael Urdaneta Website in spanish
  • Second Lake Maracaibo Bridge at Structurae
  • Info on Maracaibo including the bridge
  • Esso Maracaibo website
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