Get a view of tunneling history in the making

Get a view of tunneling history in the making

Join project leaders on Sept. 6 from 6 to 7 PM for a walking tour view of the massive SR 99 Tunnel Project work zone.

In summer 2013, the world’s largest-diameter tunnel boring machine will begin a two-mile journey beneath downtown Seattle. Its purpose: dig a tunnel to replace the SR 99 Alaskan Way Viaduct.

Join project leaders on a walking tour of this massive project’s work zone. Watch as crews dig the launch pit for the 300-foot-long boring machine. This one-mile roundtrip tour will provide a view of construction from the bicycle/pedestrian path west of the construction area, near the stadiums.

Walking tour

Thursday, Sept. 6 | 6 to 7 p.m.
Meet at Milepost 31, 211 First Ave. S.

Unable to attend? You can take a self-guided tour anytime. Displays along the bicycle/pedestrian path describe construction activities, machinery at work and the area’s history.

Learn more about the Alaskan Way Viaduct Replacement Program at
Visit Milepost 31, the program information center, at 211 First Ave. S. in Pioneer Square.

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6 Responses to Get a view of tunneling history in the making

  1. Barbara says:

    I would like to do this. Just read the promo this morning. Are any more tours scheduled?


  2. West Edge Resident says:

    Relieved to see the tunnel boring/construction area is all south of King St. When and where will the boring/construction be done in the Pike Market/waterfront area? And in Belltown/waterfront?

  3. Pat Dolan says:

    Do I need to register for tonight’s 6-7 walking tour?

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