Highway 99 tunnel machine’s road to repairs: 2nd piece lifted tonight

March 21, 2015 9:28 pm
|    Comments Off on Highway 99 tunnel machine’s road to repairs: 2nd piece lifted tonight
 |   Alaskan Way Viaduct | West Seattle news

From the archives of the camera that peers into the pit from which pieces of the Highway 99 tunneling machine are being lifted for repairs, the view above shows the second part to be brought up. It happened early this evening and was just announced by WSDOT:

Seattle Tunnel Partners has successfully hoisted the second piece of the SR 99 tunneling machine to the surface for repairs. This evening crews lifted one of the machine’s upper sections, which weighs less than 100 tons.

Two more pieces of the machine will be removed from the pit as part of STP’s repair plan, which this narrated video explains in detail. Up next, crews will lift the right side body section of the machine, which weighs approximately 90 tons. The final lift will bring to the surface Bertha’s massive cutterhead and main drive unit, which weigh a combined 2,000 tons.

Here’s the view after tonight’s lift was done:

If you haven’t seen the time-lapse video of the first lift on Thursday, check it out here.

By the way, this gives us another chance to remind you the Alaskan Way Viaduct will be closed for its twice-yearly inspection next weekend, 6 am-6 pm Saturday and 6 am-6 pm Sunday. A section of Highway 99 north of the Battery Street Tunnel, meantime, will be closed throughout next weekend, late Friday through early Monday.

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