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University Link - Execution
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| Service: | Site supervision services, consulting and monitoring.
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| Estimated cost: | Commencement: | December 01, 2011
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Completion date: | August 01, 2012
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| Location: | 401 S. Jackson Street Seattle, WA 98104 United States |
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| Geology description: | The geology along the alignment consists of over-consolidated glacial clay and till with fractured zones, as well as sand and silt layers. |
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| Bid cost: | Final cost: | $1.6 billion USD
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Description
University Link is a 5km light rail extension that runs in twin-bored tunnels from Downtown Seattle north to the University of Washington, with stations at Capitol Hill and on the University of Washington campus. The project further includes 20 cross passages located in soft ground and a maximum design water head of 60m. To deal with the prevailing geological conditions, specific ground support categories were developed. Steel fibre reinforced initial lining, sheet membrane waterproofing and CIP final lining were utilised.
