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Alaskan Way Viaduct Settles after Bertha TBM Access Pit Dewatering

Source info:

Author:
Date: 2014-12-18 07:21:08
Blog: GeoPrac.net
URL: http://www.geoprac.net/geonews-mainmenu-63/64-project-related/1578-alaskan-way-viaduct-settles-after-bertha-tbm-access-pit-dewatering

Summary:

Areas surrounding the access pit being excavated to rescue the stalled Bertha TBM have experienced settlement as much as 1 to almost 1.5 inches according to a draft figure released by WSDOT on December 11, 2014. The aging and seismically deficient Viaduct itself has experienced 1 inch of settlement as well. Structural engineers have inspected it as well as numerous buildings in the area and have not found structural damage. The settlement is thought to be related to the dewatering associated with the access pit construction. The excavation was within 3 feet of the bottom when the settlement issues were first announced on December 5, and WSDOT has since allowed the contractor to complete the excavation. [Source: Read more information in the update provided by the WSDOT Alaskan Way Viaduct Replacement Project team. Image: WSDOT]

Content analysis:

Geographic context:

LocationCountryLatitudeLongitude
Alaskan WayUS47.6113-122.349
BerthaUS46.2665-95.0628
ViaductIN27.09877.6633

Keywords:

access pit, access pit construction, Alaskan Way Viaduct, Bertha TBM, contractor, Dewatering Areas, draft figure, excavation, feet, frontpage, Image, inch, inches, numerous buildings, seismically deficient Viaduct, settlement issues, Source, structural damage, Structural engineers, TBM Access Pit, update, Viaduct Replacement Project, Way Viaduct Settles, WSDOT Alaskan Way

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