I-5 express lanes closed through the weekend for Ship Canal Bridge work
WSDOT scheduled a weekend-long closure from Sept. 11-14 for drainage and preservation work, and warns northbound drivers to expect heavier backups.

The Washington State Department of Transportation closed the I-5 express lanes in Seattle for a weekend-long stretch from Sept. 11 to Sept. 14 so crews could carry out drainage and preservation work tied to the Ship Canal Bridge.
WSDOT describes the closure as the first of two planned weekend-long shutdowns. Because the express lanes normally absorb a share of peak-direction traffic, the agency has told drivers to plan for heavier northbound congestion through the mainline lanes.
This summary is based on WSDOT's published notice. Conditions can change; check the agency's traffic alerts before traveling.
What we know
- WSDOT announced a weekend-long express lane closure for Sept. 11-14.
- The work involves drainage and preservation on the Ship Canal Bridge.
- The agency warned of heavier northbound traffic.
What we don't know
- Whether weather or crew availability shifts the second planned closure.
- Real-time reopening timing on Monday morning.
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Sources & attribution
Written from WSDOT's published construction notice.
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