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| ACS builds the SR-99 tunnel in Seattle ACS Group has been awarded a new contract on the West Coast of the United States. ACS, via Dragados USA, has been chosen, along with its US partner for this project, Tutor Perini, as the best bidder by the Washington State Department of Transportation (WSDOT) in the tender for the Design and Construction of the tunnel in the SR-99, which will replace the Alaskan Way Viaduct opposite the coast of Seattle. The bid is valued at USD 1.089 billion. The tunnel, measuring 2,700 m, will be made using the largest tunnel boring machine built in the world up to the present date, with a diameter of 17.5 m (57.5 ft.). This diameter will allow traffic to move both ways, and each way will be at a different level. The project will enable the removal of the Alaskan Way Viaduct that currently circulates opposite the coast along Elliot Bay in Seattle, which was affected by an earthquake in 2001. The replacement, besides allowing the removal of damaged infrastructures, will provide a significant change to the appearance of the city and it will improve traffic in this main thoroughfare in the city of Seattle. write your comments about the article :: © 2010 Construction News :: home page |