Preliminary Design of a New Crossing of the River Mersey
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Bibliographic Details
| Author(s): |
Andrew Paul Marginson
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Symposium: Large Structures and Infrastructures for Environmentally Constrained and Urbanised Areas, Venice, Italy, 22-24 September 2010 | ||||
| Published in: | IABSE Symposium Venice 2010 | ||||
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| Page(s): | 616-617 | ||||
| Total no. of pages: | 8 | ||||
| Year: | 2010 | ||||
| DOI: | 10.2749/222137810796063049 | ||||
| Abstract: |
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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| Keywords: |
preliminary design route selection environment cable-stayed estuary
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