Loop® vehicle maintenance facility

About the facility | Library and meetings

What is the Loop Vehicle Maintenance Facility Project?

King County Wastewater Treatment Division (WTD) is designing a new vehicle maintenance and staging facility for transporting Loop biosolids. The new facility, expected to be open in spring 2019, will be located in North Bend (exit 34 off I-90) on County-owned land.

Why is King County building this facility?

• The current vehicle facility is located in south Seattle, on a space leased from the King County Airport. The lease on this land is now ending without the option to renew, requiring WTD to relocate the facility.
• Helps meet new federal regulations that limit the time a driver can be on the road.
• This facility reduces driving time and improves safety for every traveler on our highways and roads.

Learn more: view about this project and frequently asked questions.

What are Loop biosolids?

Loop biosolids are a nutrient-rich soil amendment created from King County wastewater. As it has for 40 years, the County produces Loop from solids extracted during the wastewater treatment process. Loop is used on farms and forests by commercial growers in both Eastern and Western Washington.

Learn more about Loop biosolids at:

Project schedule

The County will design and construct the new facility in three phases. The facility is expected to open in spring 2019. The design phase began in fall 2016 and will continue through winter 2018. This phase includes acquiring permits, creating detailed design and engineering specs for the new building, and determining details about how the facility will look. During this phase the County will solicit input from the public on some elements of the facility design.

Working with the community

King County will work with the public, community groups, and other key stakeholders to provide project information, identify potential impacts, and involve the community in project design where possible.

Community members can expect:

• Advanced notice of meetings and construction
• Community group and neighbor briefings
• Project newsletters and fliers
• Project web page updates, including frequently asked questions
• Construction hotline

Project location

Back to the capital projects overview map .

This project is located in North Bend, WA. The site is between 468th Avenue SE, SE 144th Street, and SE 146th Street, off I-90 east, exit 34. View larger version of map .