Highway 99 tunnel could open this fall

The Highway 99 tunnel through downtown Seattle may be running severely behind schedule, but it may open a little sooner than its late target date.

Considering an updated work schedule from Seattle Tunnel Partners, WSDOT says the Highway 99 tunnel could be finished by this fall instead of early next year. But it adds in the blog post, “a significant amount of work remains between now and tunnel opening” and “it’s too early to accurately predict a tunnel opening date.”

Crews are still working on the roadway and systems inside the tunnel, and then they’ll test “approximately 5,000 individual components and nearly 90 tunnel systems.” And Scarsella Bros. workers need to build the final connections between the existing highway and the tunnel.

Then the real fun begins. “When the tunnel is ready to open, SR 99 through downtown Seattle will be closed to traffic for approximately three weeks,” WSDOT said. It goes without saying that 99 is a major corridor to North Seattle, and those will be a painful 3 weeks.

Once the tunnel is open, crews will demolish the Viaduct — carefully.

You can track the construction progress on WSDOT’s website.

5 comments on “Highway 99 tunnel could open this fall”

  1. Awesome, but what should I do with my “Save the Viaduct” bumpersticker?

  2. @ Old Ballard F@rt: You could mass produce them and sell them (nostalgia) to pay for using this tunnel.

  3. @Scott
    The tunnel will be paid for via tolls by the dinosaurs who still use cars.

  4. Dinosaur? My missus loves her Lexus dinosaur with heated seats and Airplay. In fact, it runs in part on dinosaur juice I imagine. She Drives to her office fromBallard in 20 minutes usually.

    Takes 45 by bus. You’ll go extinct wasting that much time plus no cup holders.

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