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Traffic and Roadway Construction Alerts

Below are known impacts to traffic that will affect travel around Port-owned Properties that may impact travelers due to congestion or roadway construction. All information is provided by Washington State Department of Transportation (WSDOT).

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Traffic Impacted Around the Airport

Navigation Tips for the New SR 99 Tunnel

In response to the Alaskan Way Viaduct Closure Project (Realign 99) effective January 11, 2019 the Washington State Department of Transportation produced four new videos to help drivers navigate the changes the new tunnel brings. The videos show:

Viaduct Closure Map

Helpful Links from WSDOT

See other construction updates from the city of SeaTac.

Related to Traffic and Roadway Construction Alerts

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