Seattle

October Roadworks Scheduled in Sammamish: Traffic Updates and Expected Delays

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Published on October 04, 2025
October Roadworks Scheduled in Sammamish: Traffic Updates and Expected DelaysSource: Unsplash/Miguel Teirlinck

Sammamish residents can anticipate a range of roadworks in the area throughout October, impacting several streets and neighborhoods with minimal disruptions announced by the city's recent Cone Zone update. From October 6 to 10, CCTV technology will be employed to inspect pipes on NE 14th Drive between 220th PL NE and 228th Ave NE, as well as on Sahalee Dr W from 211th Ave NE to 215th Ave NE, leading to occasional single-lane closures.

Amid the series of utilities and infrastructure improvements, drivers should be prepared to carefully navigate one-way traffic up Louis Thompson Road, a measure put into place to steadily ensure the safety of both drivers and residents. According to the city's announcement, the thoroughfare along this road will be affected until October 30, as the city looks forward to completing the final paving in the spring of 2026.

The installation of a new water main along Sahalee Drive East, which began in August and is set to continue through December, aims to upgrade the water system infrastructure. This project may lead to some minor traffic delays, with control measures actively in operation to ensure smooth commuting.

Additionally, residents should expect crews to be on site from October 6 until the end of the year for the replacement of a gas main by PSE. The work areas will specifically affect 224th Pl NE, NE 14th Drive, and NE 12th Pl. PSE crews plan to seamlessly patch asphalt as part of this crucial maintenance, followed by grid and overlay on certain streets.

Lastly, Ziply is set to enhance digital connectivity in the area with new fiber installations along Inglewood Hill Road and 226th between October 6 and 24. Although traffic control measures will be in place, residents might encounter some delays as the installation progresses.

Seattle-Transportation & Infrastructure