Willamette Water Monthly Issue 27
October 10, 2016
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Tualatin-Sherwood Area Pipeline Route Confirmed

The Tualatin-Sherwood Area pipeline route travels through a busy commercial area with high traffic volume. In an effort to find a better solution with fewer traffic impacts, Water Supply staff conducted further review of the proposed route, and included evaluation of an alternate route along Cipole Road, Kummrow Avenue, and Beef Bend Road east of Roy Rogers Road.  This alternative route crossed open areas and farmland, just to the west of Tualatin and King City. 

The results of the analysis show that staying on the Tualatin-Sherwood and Roy Rogers Road alignment is still the best option. Staff discovered that impacts to protected natural resources on the alternate route would be greater than on the preferred route. They also found that there were ways to lessen traffic impacts along the busy Tualatin-Sherwood road by combining efforts with Washington County, who is planning road improvements along the preferred pipe alignment. This partnership will also result in cost savings for Tualatin Valley Water District and City of Hillsboro ratepayers – an added bonus for sticking with the preferred route. 


 Program Update Highlights 

South Hillsboro Area Pipeline Project — Water Supply staff are working closely with partners to plan, design, and build the pipeline through the Cornelius Pass Road and TV Highway intersection. This inter-agency cooperation sets the stage for future coordination when planned Cornelius Pass Road and South Hillsboro street improvements and extensions occur. Visit the project website for more information.

Community Outreach —Water Supply staff continue to contact property owners along the proposed pipeline route requesting permission to enter their properties for survey work. This access allows Water Supply staff to complete wetland, cultural, geotechnical, and other environmental studies on properties that may be needed – either temporarily or permanently - for construction staging or placement of infrastructure when construction begins. Geotechnical drilling is already underway along some sections of the route, and land surveyors are documenting topographical features along the approximately 30-mile route. Survey work will continue throughout autumn.

124th Avenue Partnership Project — Work continues on this opportunity project with Washington County. Installation of the pipeline portion of the project is anticipated to begin this fall, with pipe delivery expected in October. The pipe for this section of the project was purchased from local pipe manufacturer Northwest Pipe Company. Visit the 124th Avenue website for more information.  

Kinsman Road Partnership Project — Construction has begun on this cost-saving opportunity project with the City of Wilsonville and the Federal Highway Administration. The first segment of water supply pipeline will be delivered and installed in mid-October!! Construction is anticipated to conclude late in 2017. Visit the Kinsman Road project website for more information.

Visit for information on monthly progress, cost, and schedule.

Look for a story about the water supply’s focus on safety in a future Willamette Water Monthly!

Marlys Mock, Media & Community Relations Coordinator, 503-941-4570

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