Seattle's Alaskan Way Viaduct closes forever

At 10 p.m. Friday, Jan. 11, both directions of SR 99 will close between Spokane Street and Western Avenue for three weeks so crews can realign the roadway into the new tunnel. 

SR 99 closure map

This will be the longest planned highway closure the Puget Sound region has ever experienced. History shows that traffic congestion worsens considerably during a viaduct closure – no matter what roads are traveled. This is why regional transportation agencies are asking everyone to make a plan to get around differently. 

Here are a few things that you can do:

Ideas and resources:

After the new tunnel opens in early February, it will take up to two additional weeks to complete a new northbound off-ramp into downtown Seattle – creating traffic disruptions for up to six weeks.