Widening of the 400 m Span Cable-stayed Bridge over the Rande Strait in Spain
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Bibliographic Details
| Author(s): |
Álvaro Serrano-Corral
(MC2 Estudio de Ingeniería (Typsa Group), Madrid, Spain)
Miguel Ruperez-Astarloa (MC2 Estudio de Ingeniería (Typsa Group), Madrid, Spain) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Symposium: Tomorrow’s Megastructures, Nantes, France, 19-21 September 2018 | ||||
| Published in: | IABSE Symposium Nantes 2018 | ||||
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| Page(s): | S21-9 | ||||
| Total no. of pages: | 8 | ||||
| DOI: | 10.2749/nantes.2018.s21-9 | ||||
| Abstract: |
The Atlantic Motorway, AP-9, crosses the Vigo estuary by means of a 400-m span cable-stayed bridge over the Rande Strait. This bridge was built between 1973 and 1977, and opened to traffic in 1981. In 2006, the average daily traffic reached 47 000 vehicles, close to its effective capacity and therefore resulted in frequent traffic congestion conditions. In order to increase the bridge’s traffic capacity, feasibility studies were carried out. After technical, aesthetic and economic comparative analyses, the most favourable solution found was a widening project. The widening solution consists of two new external decks positioned along both the outer sides of the existing deck next to the main piers. This system will allow bridge-widening works without both interrupting the traffic on the existing bridge and affecting the Vigo estuary, a very valuable zone from a natural environmental and landscape perspective. |
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| Keywords: |
bridge widening cable-stayed bridge wind tunnel erection process long span
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