Grouting work done earlier in the week was a possible cause of a bulge in the lining of a train tunnel under the River Thames. Two trains hit the bulge before the line was closed, but neither train derailed. [Source: New Civil Engineer]
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Seattle tunnel will go under 158 buildings
The tunnel replacing the Alaskan Way Viaduct (SR-99) will pass beneath 158 existing structures requiring an extensive program of vibration and settlement monitoring as well as some remediation. Of the 158 buildings, WSDOT identified 20 […]
Video: Simulation View of Washington SR 99 Bored Tunnel (Alaskan Way Viaduct Replacement)
March 24, 2010
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