Portland West Side CSO - TunnelCast
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Sep, 2009: Following a brief introduction on the need for the Willamette River CSO Project, hear from the engineers who worked on Portland's West Side CSO, in this 23 minute detailed account of its construction.

Portland CSO closing in on breakthrough - TunnelCast, Sep 2009
Portland progress - TunnelTalk, August 2008

Snapshot

Portland's West Side CSO

Location:
Portland, Oregon
Project:
Willamette River West Side CSO Tunnel
Value:
$269 million
Owner:
City of Portland Environmental Services
Construction Contract:

Cost-reimbursable/fixed-fee
Tunnel:
3.5-mile, 14.5ft diameter soft-ground tunnel
Designer:
Parsons Brinckerhoff
Contractor:
Impregilo/SA Healy JV
TBM:
7.7m diameter Herrenknecht Mixshield
Operational:
September 2006
Video:
Produced by The City of Portland, Environmental Services