Malcolm drilling crews setting up to drill secant pile shafts for TBM launch pit
Project Related

Digging deep to drill Highway 99 tunnel

Construction has started on the tunnel boring machine launch pit for the WSDOT SR 99 Tunnel Project (Viaduct Replacement). The 420 foot long pit is being constructed using secant pile retaining walls, with 2 rows […]

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Geologic Hazards

Video: Alaskan Way Viaduct Earthquake Simulation

Seattle’s Alaskan Way Viaduct and Seawall Replacement Project is a political lightning rod, but this amazing simulation video released by WSDOT underscores what COULD happen if a significant earthquake struck the Seattle Downtown Waterfront area.