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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 updated: August 17, 2017

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

Click here to download the PDF of this information


August 14: 4th Ave. S. Paving Project begins.

August 18 - 21: Montlake Bridge closed in both directions.

August 18 - 21 & 25 - 28: Northbound I-5 reduced to two lanes between SeaTac and Tukwila.

August 18 - 20: Seattle Hempfest at Myrtle Edwards Park.

August 18: Seattle Seahawks host the Minnesota Vikings in a pre-season game at 7PM at CenturyLink Field.

August 19: Multiple street closures on 2nd Ave. in downtown Saturday.

August 25 - 28: SR520 closed between I-5 and Bellevue.

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).