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Lake to Sound Trail project
The Lake to Sound Trail, once complete, will be a 16-mile regional trail spanning from the south end of Lake Washington in Renton, all the way to the shoreline of Puget Sound in Des Moines. The project is broken into segments, with segments A, B, and C complete as of 2026. Segments D, E, and F are scheduled for future completion.
Lake to Sound to Renton Transit Center (segment D)
Description:
The project will extend the Lake to Sound Trail east approximately 1.3 miles into Renton. It will provide a new connection for regional trail users from the existing Lake to Sound Trail at the Black River Riparian Forest to Renton’s newly-constructed shared use path/two-way protected bike lane at S 7th St and Shattuck Ave S. The project will connect directly to and through Sound Transit’s Renton Transit Center (under construction) and Metro’s South Renton Park & Ride.
Location:
The project route begins at the existing Lake to Sound Trail at the north end of Naches Ave SW, continues south to SW 7th Street, turns east on SW 7th Street, then south at Hardie Ave SW, crosses Rainier Ave S to Sound Transit’s future Renton Transit Center, east through King County Metro's South Renton Park & Ride, then north on Shattuck Ave S terminating at S 7th Street.
Current status:
We are in the early stages of design of this project. We are gathering information on existing conditions and preparing alternatives analysis.
Completed segments
1.2 miles (Naches Ave. in Renton across the Black River Forest to Ft. Dent in Tukwila) of trail was opened to the public on 2/26/2020.
1.5 miles along Des Moines Memorial Drive from S. 156th St to S. Normandy Rd. Construction was completed on this segment in 2018. The trail is now open for use.
Location:
2.2 miles connecting the south terminus of Segment B to the Des Moines Creek Trail at S. 200th St., roughly following the SR509 extension alignment.
Description:
This project was completed in 2025. It was funded by $13M WSDOT, $600K RCO Grant, and $2.2M Levy. It extends an important regional trail link. View segment map. This project was broken into phases by the cities. Phase 1 was in SeaTac and Phase 2 was in Burien. The 1.8-mile SeaTac segment was constructed by Active Construction, Inc. Construction was completed in September 2023, and the phase is now open for public use. This phase connects the Des Moines Creek Trail to 8th Ave. S. in SeaTac and includes boardwalks through natural areas, retaining walls, and enhanced crossings.
Phase 2 in Burien, a 0.4-mile extension of Phase 1 in SeaTac, was completed in June 2025. The construction contract had been awarded to SCI Infrastructure, LLC. This segment closes the gap along Des Moines Memorial Dr. between 8th Ave. S. and S. Normandy Rd. in Burien. The construction duration was 9 months. There is now 7 contiguous miles of the Lake to Sound Trail open for public use.
Design:
- 100% Design Plans, Burien (Nov 2023)
- 100% Design Plans, SeaTac (Oct 2021)
- Alternatives Analysis (March 2017)
- Jurisdictional Ditch Memo (Jan 2017)
- Wetland Discipline Report (Jan 2017)
- Stormwater Technical Memo (Dec 2016)
- Geotechnical Report (2019)
- Traffic Analysis (May 2017)
Technical Reports:
- Lake to Sound Trail Segment C - SEPA DNS
- Lake to Sound Trail Segment C - SEPA Checklist
- Lake to Sound Trail Segment C - Vicinity Map
Public Outreach:
- April 12, 2017 - Open House