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Geotechnical Egineering News tagged with [highway tunnel]

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New Seattle tunnel designed to ride out catastrophic 9.0 quake, DOT says
KOMONEWS.com   08 January 2019   USA   Seattle  
<p>SEATTLE &ndash; 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 ...
Filed under: Construction News
First road-legal truck drives length of Highway 99 tunnel
The Seattle Times   02 November 2017   USA   Seattle  
The tunnel is expected to be open in January of 2018
<p>The Highway 99 tunnel construction project moved into a new direction this week. Northbound.<br />The upper, southbound deck is almost finished, which clears enough room beneath for assembly to begin for the lower deck that will carry traffic north from ...
Filed under: Construction News