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Service: | Tunnel final lining alternative proposal
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Estimated cost: | Commencement: | January 29, 2001
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Completion date: | October 21, 2005
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Location: | Los Angeles, CA United States |
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Technical data: | Tunnel widening from a 14 ft (4.3 m) to 29 ft (8.8 m) springline diameter section. |
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Geology description: | Hard Rock |
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