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| Service: | NATM alternative design, FEM design computations for NATM and TBM driven tunnels, ground classification and ground stabilization measures | ||||
| Estimated cost: | Commencement: | December 28, 1989 | Completion date: | December 28, 1994 | |
| Location: | Dallas, TXUnited States | ||||
| Technical data: | 4 single-track light rail tunnels, total length 11,500 ft (3505 m). | ||||
| 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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