EnCon United supports fabrication of precast liner segments for Seattle highway tunnel …

Wiggert & Co. GmbH, 76227 Karlsruhe, Germany

… using advanced batching system The 6.8 magnitude Nisqually earthquake that struck eastern Washington State in 2001 shook a wide area of the U.S. Northwest, damaging numerous structures including many roads and bridges. The damage and subsequent repairs of a 1950s era reinforced concrete double- decker highway led to an ambitious replacement plan that includes the world's largest diameter highway tunnel. On July 30th, an $80 million tunnel boring machine (TBM) departed its 80-foot deep launch pit near the Seattle waterfront. The TBM – the world's largest – arrived in April 2013 from Osaka, Japan, and its 41 pieces were lowered into the launch pit for assembly. At speeds of up to 35 feet per day, the earthworm-like TBM will burrow its way below nearly 200 buildings and a maze of subsurface infrastructure for nearly two miles, surfacing just south of Lake Union in the fall of 2014.

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Wiggert & Co. GmbH Wachhausstr. 3b 76227 Karlsruhe, Germany T +49 721 943460 F +49 721 402208 info@wiggert.com www.wiggert.com Encon Washington, LLC 5415 - 189th Street E Puyallup, WA 98375, USA T +1 253 8462774 F +1 253 8469628 www.enconwashington.com


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