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October 2024

Construction on Alpha Hill starting as early as mid-October

Temporary trail closures around construction area for approximately three months

Alpha Hill itself closed to public access to prevent erosion

Alpha Hill is the large landform that towers over the south trails area at Brightwater. Informal paths on Alpha Hill have caused dirt to get into nearby salmon-bearing streams. This can harm water quality. This project will create a barrier to foot traffic that also benefits wildlife. 

New landscaping, rock wall, and fence to protect water quality

King County’s contractors will install landscaping, a rock wall, and a fence on Alpha Hill. Vegetation helps filter runoff into Little Bear Creek. It also provides wildlife habitat and improves drought tolerance. The landscaping needs time to establish, so the plants you see will grow over time. These improvements help control erosion and protect water quality in nearby salmon-bearing streams.

Temporary trail closures during construction

To help keep everyone safe, King County’s contractors will temporarily close a section of trail near Alpha Hill. Please stay on open trails to protect the surrounding landscape. Once construction is complete, this project will not change access to the three miles of maintained trails at Brightwater.

A section of trail in the south trails area will be temporarily closed during construction on Alpha Hill. On the map, that area is shown by the dotted line between the two stop sign icons. Please stay on open trails to protect the surrounding landscape.

If you’re looking for a new hill to climb nearby, check out: Norway Hill in Blyth Park, Hollywood Hill along the Tolt Pipeline Trail, or the Wetland Plateau Trail in the Paradise Valley Conservation Area.

What to expect during construction:

• Typical work hours weekdays 7 a.m. to 7 p.m. and Saturdays 10 a.m. to 5 p.m.
• Temporary trail closures in south trails area (see trail map above).
• Construction fencing around closed work area.
• Crews installing rock wall, fence, and landscaping on Alpha Hill.
• Increased noise and dust near work site.
• The project schedule may change due to weather or material availability. Please check kingcounty.gov/BrightwaterProjects for updates.

Questions or Comments? 

Contact Emily with Community Services at Brightwater@kingcounty.gov or 206-296-7432. Please leave a message with your phone number if you would like a call back.

Please do not approach workers onsite, for your safety and the safety of the crew. Instead, contact Community Services. We will respond to you as soon as possible.

Interpretation and translation services are available to you at no cost. If you need them, please
contact Brightwater@kingcounty.gov or call 206-296-7432. Please leave a message with your phone number and language if you would like a call back.

Los servicios de interpretación y traducción están disponibles sin costo alguno. Si los necesita, comuníquese con Brightwater@kingcounty.gov o llame al 206-296-7432. Deje un mensaje de voz con su número de teléfono y su idioma si desea que le regresen la llamada.

免費為您提供口譯和筆譯服務。如果您需要這些服 務，請聯絡 Brightwater@kingcounty.gov.

免费为您提供口译和笔译服务。如果您需要这些服 务，请联络 Brightwater@kingcounty.gov.

Alternative Formats Available: 206-477-5371 or TTY Relay: 711

Formatos alternativos disponibles: 206-477-5371 o retransmisión TTY: 711