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| Impregilo to build a new section of the San Francisco subway Italian construction giant Impregilo and its U.S. subsidiary SA Healy, a specialist in underground works, in a consortium with the American company Barnard, have been awarded the tender for the construction of the extension to the "Central Subway" line in San Francisco, USA. The new contract is worth $ 233 million (Impregilo and Healy participate with an overall share of 45%). The project envisages the underground extension of the existing surface line in the city centre, with the construction of two new single-track tunnels for a total length of 5 km, to be excavated with two TBMs with a diameter of 6.40 metres. The expected duration of works is 35 months. write your comments about the article :: © 2011 Construction News :: home page |