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Service: | NATM support works
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Estimated cost: | Commencement: | December 30, 2001
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Completion date: | December 29, 2005
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Location: | Dublin Dublin |
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Technical data: | Bi-directional two lane road tunnels encompassing 5.6 km area. Total tunnel lenght: 4.5 km, TBM bored lenght: 2.4 km, each tube at 11.7 m diameter, Cut & Cover: 1.5 + 0.6 km. |
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Geology description: | Dublin Boulder Clay (lodgement till), carboniferous argillaceous, limestone bedrock. |
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Bid cost: | Final cost: | £385 million GBP
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The Dublin Port Tunnel is an approximately 3.5 mile long twin, two-lane tunnel which connects the M50 motorway and Dublin Airport with Dublin Harbour. The underground connection will help to manage the rising traffic demands and will carry up to 20,000 vehicles per day upon opening. The overall scheme consists of 2.8 miles of tunnels, where 1.3 miles are Cut-and-Cover and the remaining 1.5 miles are TBM bored 35ft.