Construction in Seattle
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Planned roadwork on SR 509

Scheduled window: Wed, Oct 7, 8:40 PM to Thu, Oct 8, 4:00 AM PT

Source says

Road work on SR 509 southbound from milepost 3.7 near Marine View Dr to milepost 2.9 near Alexander Ave beginning at 8:40 pm on October 7, 2026 until about 4:00 am on October 8, 2026.

Source: Road reports

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CitySignal summarizes information from third-party and public sources. Always follow instructions from the relevant government agency, utility, transit provider, or emergency authority.