South Delridge’s long-promised Delridge Triangle is finally reaching the part where neighbors get to shape what happens next. Seattle is advancing a plan to turn a short section of 18th Avenue Southwest and two city-owned parcels into a more walkable public space, with construction-level improvements now targeted for 2027.
SDOT will bring the project to the Delridge Farmers Market from 10 a.m. to 2 p.m. Saturday, then host a community design charrette from 4:30 to 6:30 p.m. Monday at 18th Avenue Southwest and Delridge Way Southwest, according to West Seattle Blog and the city’s project flyer. The meetings are the next chance for residents to weigh in on how the street closure and surrounding public space should work.
SDOT Wants A People Street, Not Just A Closed Road
The project sits within Seattle’s People Streets and Public Spaces program, which focuses on creating community-shaped streets and plazas with features such as seating, lighting, landscaping, wayfinding and gathering areas. The Seattle Department of Transportation says the program is intended to strengthen neighborhoods and prioritize areas that have historically received fewer public-space investments.
Seattle’s 2026 transportation levy delivery plan identifies 18th Avenue Southwest as a community-prioritized tactical project. The plan describes these projects as opportunities for redesigned streets, seating, wayfinding, lighting and other improvements, meaning Delridge residents are being asked to help decide what this first, potentially temporary-to-intermediate phase should look like.
The Street Timeline Is Ahead Of The Larger Park Vision
The immediate project is smaller and faster than the long-term park proposal. The city’s current schedule calls for concept design and programming this summer, design finalization during winter 2026-27, and implementation in spring or summer 2027, according to the flyer.
That timeline is notably quicker than the full park conversion, which would combine the triangle with an adjacent parcel and eventually transfer the area from transportation officials to Seattle Parks. In an earlier update, West Seattle Blog reported that Parks did not expect to have development funding for the larger project before 2028.
So Monday’s charrette is not a groundbreaking ceremony, and it is not the final park design either. It is the more immediate test of whether the city can make the awkward little wedge of street and open land safer, more useful and more welcoming while the bigger Delridge park plan waits its turn.
Residents can share feedback at the Saturday market table or attend Monday’s on-site session. The project flyer lists the city’s Urban Design Team as the contact for the Delridge Triangle Pedestrian Street effort.
