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Associated Press
Seattle Tunnel Partners project director Chris Dixon walks near the massive crane that was being used Monday, March 30, 2015, to lift a 2,000-ton section of the tunnel boring machine known as "Bertha" that is currently stalled underground and awaiting repairs while digging the 1.7-mile tunnel intended to replace Seattle's elevated Alaskan Way Viaduct roadway. The piece being lifted to the surface includes the five-story-tall tunnel cutterhead, motors and the main bearing that will be replaced during the repairs before the piece is lowered back underground to the machine. (AP Photo/Ted S. Warren)

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