Raw Water Facilities (RWF)

Dear Neighbor,

We’re making steady progress building the Willamette Water Supply Program Raw Water Facilities project. Please take a moment to read this month's construction update below.

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Heads Up! Construction Activities

The RWF team anticipates the Arrowhead Creek trenchless crossing activities through fall 2021. Work includes building and excavating the launch and receiving shafts through spring 2021 and the trenchless pipeline crossing beginning late-April through late-June. This work requires large cranes, excavation equipment, and increased truck traffic.

Installation of new water and sewer utilities in Arrowhead Creek Lane and connections to these new lines to the existing utilities in Brockway Drive has begun and will continue through early summer. These utilities will serve the new electrical building on the upper site. Final paving on Arrowhead Creek Lane and Brockway Drive is anticipated to take place in early May. This work will be noisy.

In the northwest corner of the Upper Site, installation of a large underground vault to hold a large meter and valves began in March and is anticipated to be complete in late spring 2021. This work requires excavation equipment, increased truck traffic, and carpenters to build formwork. Hammering and lumber sawing noises should be expected.

The seismic riverbank reinforcement earthwork will be complete in late spring. Noise and large truck traffic through the park may increase through completion. The removal of the deep soil mixing equipment will be complete this spring.

New 66” diameter water pipeline installation through the park is anticipated to begin in late April and will continue through spring 2022. As planned and approved (by the City of Wilsonville), the FULL PARK CLOSURE of the Willamette River Water Treatment Plant Park (also known as Arrowhead Creek Park) is anticipated to begin June 1, 2021, through fall 2021 to keep the public safe during water pipeline installation. The Brockway Drive and Ice Age Trail access into the park will be closed with fencing and signage during this closure. All access paths into the park will be closed during this full park closure. This work requires a significant increase in truck traffic.

We will post signs and mail information to nearby neighbors in advance of this full park closure.

In-Water Activity

Replacing the existing fish screen and intake protection piles (to protect the screens from hitting the river intake) is anticipated to begin at the end of May and will take approximately two weeks and require increased boat traffic. This work will be noisy.

Other Nearby Construction News

Construction on Fifth Street & Kinsman Road is underway. The project will:

• Extend 5th Street towards the west
• Extend Kinsman Road to the south
• Extend the Ice Age Tonquin Trail to Old Town
• Upgrade pedestrian enhancements and improve traffic calming on Boones Ferry Road
• Includes the installation of utilities

It is anticipated that construction will continue over the next two years, concluding in January 2023.  

Learn More About the Raw Water Facilities Project

Project Overview
In coordination with the City of Wilsonville, the Willamette Water Supply Program team is building improvements in and around the Willamette River Water Treatment Plant in Wilsonville. Construction is underway and expected to take four years. Improvements include:

• an improved pump station
• a seismically reinforced Willamette Riverbank
• increased water intake capacity
• a new electrical building
• a new raw water pipeline
• park restoration after construction

Project Schedule

• Phase 1 Construction Projected Completion: February 2022
• Seismic Ground Improvements: July 2020-June 2021
• FULL PARK CLOSURE is anticipated to begin as early as June 1 through fall 2021
• Landscape Restoration Complete: January 2022
• Phase 2 Construction Projected Start:  Spring 2022