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Preliminary Design of a New Crossing of the River Mersey

 Preliminary Design of a New Crossing of the River Mersey
Auteur(s):
Présenté pendant IABSE Symposium: Large Structures and Infrastructures for Environmentally Constrained and Urbanised Areas, Venice, Italy, 22-24 September 2010, publié dans , pp. 616-617
DOI: 10.2749/222137810796063049
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The Mersey Estuary stretches approximately 35km inland and forms a major obstacle to North- South communications in the North West of England. The existing road bridge at Runcorn Gap opened in 1961...
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Détails bibliographiques

Auteur(s):
Médium: papier de conférence
Langue(s): anglais
Conférence: IABSE Symposium: Large Structures and Infrastructures for Environmentally Constrained and Urbanised Areas, Venice, Italy, 22-24 September 2010
Publié dans:
Page(s): 616-617 Nombre total de pages (du PDF): 8
Page(s): 616-617
Nombre total de pages (du PDF): 8
Année: 2010
DOI: 10.2749/222137810796063049
Abstrait:

The Mersey Estuary stretches approximately 35km inland and forms a major obstacle to North- South communications in the North West of England. The existing road bridge at Runcorn Gap opened in 1961 and was designed for 10,000 vehicles a day - it now carries over 80,000. Gifford were appointed by Halton Borough Council in 2001 to develop proposals for a new crossing.

Various options were considered and compared in terms of traffic flows, economic benefit, environmental impact and objective satisfaction. The preferred option was for a route upstream of the existing bridge connecting the existing highways either side of the river. It crosses the estuary where it is approximately 1km wide. A 4-span cable stayed structure was chosen to reduce the effects on the tidal flows and the environment. The Scheme has been through a Public Inquiry, the results of which are expected during the first half of 2010.

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