Purpose

To consolidate, disseminate, and gather information concerning the 710 expansion into our San Rafael neighborhood and into our surrounding neighborhoods. If you have an item that you would like posted on this blog, please e-mail the item to Peggy Drouet at pdrouet@earthlink.net

Wednesday, October 22, 2014

Workers start digging Bertha repair pit

http://www.seattlepi.com/local/transportation/article/Workers-start-digging-Bertha-repair-pit-5835148.php

By Aubrey Cohen, October 20, 2014




 Seattle Tunnel Partners starts digging a pit to access and repair Bertha, the waterfront tunneling machine. Photo: Washington State Department Of Transportation
 Seattle Tunnel Partners starts digging a pit to access and repair Bertha, the waterfront tunneling machine. Photo: Washington State Department Of Transportation

Workers have started digging a pit to get at and fix Bertha, the waterfront tunneling machine, the state Department of Transportation reported Monday.

Seattle Tunnel Partners rolled an excavator in on Friday west of the Alaskan Way Viaduct, near Pier 48, where Bertha stopped after overheating last December, the DOT said. The contractor plans to dig a pit that's 80 feet wide and 120 feet deep, supported by piles.

Workers also are lowering groundwater near the pit and preparing to install a massive crane to hoist pieces of the machine to the surface for repair. The plan calls for repairs to start in later this fall, with tunneling resuming next March.

People can track progress of the pit and other tunnel work via WSDOT's construction cams.