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DART Segment NC1 - A1/A2
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| Service: | NATM alternative design, FEM design computations for NATM and TBM driven tunnels, ground classification and ground stabilization measures
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| Estimated cost: | Commencement: | December 28, 1989
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Completion date: | December 28, 1994
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| Location: | Dallas, TX United States |
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| Technical data: | 4 single-track light rail tunnels, total length 11,500 ft (3505 m). |
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| Geology description: | Shale, clay, terrace sands and gravels (below groundwater level). Weathered and unweathered Limestone (Austin Chalk). |
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| Bid cost: | Final cost: | $50,000,000
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