Project Details

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Results Chart for Delivery Method and Financing

Delivery Method

# of Projects: 1
100% of the Results

Background informationProject Created: December 2, 2009

Project Name: Brightwater Sewage Plant & Tunnel (Seattle)
Year in Operation:
Sector: Water & Waste
Subsector: Wastewater, Tunnel
Status: Design / Construction
Type: New Facility
Description: Third regional wastewater treatment plant constructed by King County to serve northern part of the King, Snohomish, and Pierce county area, including conveyance thru 13 mile tunnel and dispersal in marine outfall in Puget Sound.
Delivery Method as described in the country where it's located: Design Bid Build
Is the project still active: Yes
Comments: Preliminary, Primary, and Secondary Treatment with Membrane Bio-reacotr technology. Plant is DBB. Tunnel is Design/Build.

Project Locations

Address: 22801 Snohomish Woodinville Hwy
City: Maltby
State: Washington
Country: United States of America

Address: 22800 Snohomish Woodinville Hwy
City: Maltby
State: Washington
Country: United States of America

Souces of Project Support (Non-monetary)

Checkbox Checked Access to Land: County acquired the property in unincorporated portion of Snohomish County.

Souces of Project Support (Monetary)

Checkbox Checked

From Public (Government) Sources to Producers

Arrow Right
Checkbox Checked

Direct Cash Support: Funded by King County utility department. Estimate for the cost of Brightwater system is $1.8 billion. Fees collected through growth in the NE region of Seattle is planned to pay these costs -- from rates and hook-up fees paid by new customers to the system. Current ratepayers are expected to see modest rate impacts over the long term.

Project Delivery & Finance Method

Project Delivery:
All Public Finance. Public Sponsor contracts for initial design, and separately contracts for initial construction. Public Owner operates and maintains the resulting facility.
Construction Manager At Risk Variants: Public Sponsor contracts with Construction Contractor after Design is Complete.

Procurement Approach

Project Component
Based Selection
Request for
Request for
for Bids

Term for Key Components & Forms of Contract

Project Component
Initial Design and Construction
Mandatory Statutory Form
Standard state procurement practices. RFP proposal process for Design/Build of Tunnel and Outfall portion of project. QBS and IFB for DBB treatment plant. 

Project Value (If and As Known)

Date of Estimated Project Value: July 1, 2006
Project Value
Hard Cost
Hard & Soft Costs
> $500 Million US


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