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Смотрите также: Boyne River Bridge The Boyne River Bridge is a cable-stayed bridge in Ireland. It spans the Boyne River 3km west of Drogheda on the county boundary between County Meath and County Louth and is part of the M1 Northern Motorway.
Boyne River Bridge Carries 4 lanes Crosses Boyne River Locale 3km west of Drogheda Designer Roughan & O'Donovan Design cable-stayed bridge Total length 352.5m Width 34.5m Height 95m Longest span 170m Number of spans 6 Vertical clearance 20m Beginning date of construction 2000 Completion date 2003 Opening date June 09, 2003
Overview Designing a road bridge over the Boyne was not an easy task. At the chosen point, three kilometers upstream from Drogheda, the ground level on the south is elevated, with a sudden drop while the north bank slopes gradually down to the river. The area is environmentally sensitive, especially the reed beds on the north bank and the flora and fauna of Yellow Island in the middle of the river. The area has a rich heritage as it is also situated adjacent to the area in which the 1690 Battle of the Boyne took place.
The answer was a cable-stayed bridge. Although at a cost of 35 million euro it would be more expensive than a standard road bridge, it could incorporate a much longer main span without the need for supports in the river, so the engineers could protect the river and the island from any interference. It would also look attractive, with a tall pylon at the south side and cable stays fanning out from it, supporting the main structure. Comments: 0 |
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