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CG Base Seattle Traffic Update


Google Maps directions to Base Seattle, courtesy LCDR Jonathan Stehn



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New ramp to the Base for those using I-5, courtesy RADM Bert Kinghorn:


1. Get off I-5 at the Edgar Martinez (4th Avenue S.) exit. 

2. Go west until you come to the very last stop light which is just before the viaduct.

3.  Against all your intuitive urges, turn RIGHT away from the CG Base which is right in front of you and onto a ramp that seems to lead to downtown Seattle. 

4.  The ramp will bend around toward Elliot Bay and finally dump you out on grade right in front of the Base. 

5.  Turn right into the base as normal when approaching from the North.


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Last Update: March 23, 2017

To view this information geographically, visit SDOT's Travelers Information Map

Click here to download the PDF of this information


March 23 and 25 - 30: Eastbound SR520 closed nightly between Montlake Blvd. and the Lake Washington Blvd. E. on-ramp.

March 24 - 27: Westbound I-90 reduced to one lane between Bellevue and Seattle; westbound traffic diverted to Express Lanes.

March 25: Seattle Sounders host Club Necexa at 7PM at CenturyLink Field.

March 31 - April 3: SR520 closed in both directions between Montlake Blvd. and Bellevue.

April 1: SPD will escort the March for Health from Westlake Park to Seattle Center via 4th Ave.

April 7 - 10: Eastbound I-90 reduced to one lane between Seattle and Bellevue; eastbound traffic diverted to Express Lanes.

Note: Information subject to change. Additional construction or events may be planned in the Seattle area.
Questions? Contact:
construction.coordination@seattle.gov or call 206-684-ROAD


WEBMASTER'S NOTE:  We update this page weekly.  Please observe any barricades, be very careful in crosswalks, and watch for pedestrians and bicycles along Alaskan Way.  Click  HERE  for information about the area near Base Seattle (SODO).