PortlandOnline

POL Government Special Projects Combined Sewer Overflow Tunnel Progress

 

November 2, 2009
CONSTRUCTION UPDATE!! -- East Side Big Pipe

 


 click on map to enlarge

 

   

 

 Tunnel Progress as of November 1, 2009: 

  • The TBM has advanced over 20,406 LF to date from
    the Opera Shaft to the Port Center Shaft
  • Rosie, the TBM broke through the Port Center Shaft on
    Swan Island on October 30, 2009.

During this reach (Opera Shaft to Port Center Shaft):

Average Daily Production:  37 LF

Average Weekly Production:  190.2 LF

Best Day Production is 114.9 LF

Best Weekly Production was 420.7 LF