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<p>SEATTLE – The new Highway 99 tunnel opening in early February has been constructed to withstand a powerful once-in-2,500-years earthquake of roughly 9.0 magnitude off the Washington coast, state Department of Transportation officials said Monday.<br ...
<p>Bertha is getting ready to dig the final 1,000 feet of Seattle's Alaskan Way Viaduct replacement tunnel.<br /><br />Seattle Tunnel Partners (STP) said they temporarily stopped mining on Tuesday for maintenance to prepare Bertha for the final stretch.<br ...