The Seattle Times

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BETTINA HANSEN / The Seattle Times
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Wednesday, August 28, 2013

Huge tunneling machine off to painfully slow start

This aerial view from Aug. 20 shows the site where tunnel-boring machine Bertha is at work near the Alaskan Way Viaduct. Bertha is working on a new tunnel route for Highway 99 through downtown Seattle to replace the viaduct.