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Bertha now under The Showbox, 4,239 feet into journey

The tunnel boring machine is making good time these days

Gone are the days when we complain about Bertha’s stoppages and problems (fingers crossed). The latest update on her whereabouts lets us know she’s on track and making good time.

Technically, Bertha is now in Zone 6 of her ten zone journey. She’s making her way through Downtown from Union Street to Stewart Street, at which point she’ll enter Zone 7 and start curving away from the waterfront and towards her destination near Seattle Center.

She churned 745 feet in August and has so far moved 104 feet in September.

If you’re interested in finding out the exact route that Bertha has taken through Seattle, WSDOT is offering a chance to "Bike above Bertha.”

The approximately two-hour tours depart from Milepost 31, our information center in Pioneer Square. Attendees pedal with a guide from the south portal to the north portal, learning about the historical, archaeological and engineering aspects of the project along the way. On the way back to Milepost 31, the tour stops along the downtown waterfront, where attendees learn about the Elliott Bay Seawall Project and the Waterfront Seattle Project.

Tours take place on Wednesdays from 2:00 to 4:00 p.m, the first and third Saturday of the month from 4:30 to 6:30 p.m., and the second and fourth Sunday of the month from 1:30 to 3:30 p.m.

Bertha remains on schedule (at least this latest schedule) for the tunnel to be completed and open to traffic by early 2019.