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An automated survey machine that will monitor multiple survey prisms along the Highway 99 tunnel alignment.
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High-tech Geotechnical Monitoring for the Alaskan Way Viaduct Replacement Tunnel

February 20, 2013 rockman Project Related Comments Off on High-tech Geotechnical Monitoring for the Alaskan Way Viaduct Replacement Tunnel

Over 200 buildings will receive some form of geotechnical and geostructural monitoring around the Highway 99 tunnel in Seattle, better known as the tunnel that will replace the Alaskan Way Viaduct. A Seattle Times article […]

Anacostia River in Washington D.C.
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12 Miles of Tunnels for D.C. Sewer

September 11, 2009 rockman Project Related Comments Off on 12 Miles of Tunnels for D.C. Sewer

Anacostia River in Washington D.C.In Washington D.C., the D.C. Water and Sewer Authority (D.C. WASA) finalized a lont-term plan in 2002 aimed at reducing combined sewer outfalls into the Potomac River and its tributary, the Anacostia River. A major portion of this plan is a $2.2 Billion (US) deep tunnel program to handle excess stormwater flows and prevent the combined sewage from being discharged into the environment. Read on for a map and more info. (Photo of Anacostia River, by D.C. WASA)

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