Viaduct/Tunnel work: Alaskan Way “trail” closure coming up

View Alaskan Way Viaduct and Seawall Replacement Program in a larger map

If you click each marker on that map, you’ll see information about the state’s plans to drill there as part of the geotechnical work in the Viaduct/Tunnel/etc. project (which put together the map). Starting next Monday, the pedestrian/bicycle “multi-use trail” along Alaskan Way will be closed for some of that drilling, as per this notice from the Viaduct project, forwarded by local pedestrian advocate Chas Redmond:

Drilling work will close the multi-use trail along Alaskan Way S. between S. Royal Brougham Way and S. Dearborn Street during the week of July 13.

Starting on Monday, July 13, crews will drill three holes in the multi-use path (see map above) that runs adjacent to the Alaskan Way Viaduct.

What you can expect during this work:

* The section of the multi-use path between S. Royal Brougham Way and S. Dearborn Street will be closed approximately Monday through Friday (July 13-17).
* Detour routes will be clearly identified; bicycle traffic will be diverted to Alaskan Way S., and pedestrian traffic will be diverted across the street to the sidewalk on the west side of Alaskan Way S.
* Signage will be placed near the path one day in advance to notify cyclists and pedestrians about the closure and detour.
* Excavation will take between three and five business days to complete; all work will occur between 9 a.m. and 3 p.m.
* When drilling is complete, the surface of the multi-use path will be restored and detour signage removed.

More drilling work throughout the summer

The drillings on the multi-use path are part of a series of drillings that will be completed throughout the summer. A map and schedule for this work are available on our Web site at

Questions or concerns about this work can be directed to our hotline at 1-888-AWV-LINE or program e-mail at

We appreciate your patience and understanding, and apologize in advance for any inconvenience this work may cause. We will continue to inform you of upcoming work that may affect pedestrian routes.

2 Replies to "Viaduct/Tunnel work: Alaskan Way "trail" closure coming up"

  • owen July 9, 2009 (12:13 am)

    Thanks for the update Chas and WSB. That’s my route to work and its nice not to be surprised.

    BTW, anyone happen to about the construction on Alaskan a couple blocks south of the southern end of the trail? Is it utility relocation for the viaduct?

  • WSB July 9, 2009 (3:22 am)

    There’s a TON of work in that area. Utility relo is generally further north so what you are seeing may be part of the East Marginal Way grade separation project by the port?

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