homeWelcome, sign in or click here to subscribe.login
     


 

 

Construction


print  email to a friend  reprints add to mydjc  

June 24, 2016

Bertha taking another break

By JOURNAL STAFF

SEATTLE — Bertha, state Route 99 tunnel boring machine, is set to take a scheduled maintenance break.

The Washington State Department of Transportation said on Thursday the machine is now 120 feet under Spring Street, near Post Avenue.

At 3,088 feet, Bertha is about a third of the way through its 1.76-mile route. Almost half its overall progress has been completed in the past eight weeks. Crews have now installed a total of 466 concrete tunnel rings.

Inspection and maintenance is expected to take several weeks. The length of the stop will depend on how much maintenance is needed.




Email or user name:
Password:
 
Forgot password? Click here.