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Puget Sound Gateway Program (WA-167 and WA-509 Extensions)

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jakeroot:
WSDOT's Puget Sound Gateway Program will construct two freeway extensions (called 'completion projects'):

(1) WA-167; from WA-161 to WA-509 in Fife, with an interchange at I-5
(2) WA-509; from S 188 St to I-5 in Kent

There's been some occasional chatter about these projects for almost ten years on this forum, but only recently has there been any actual construction activity. So I'm creating this thread to make it easier to find and share information around both projects.

Some project photos (all from WSDOT):

WA-167 extension:











WA-509 extension:

Alps:
It's not April Fools Day! You can't just post this!
Thoughts:
* Really, you're gonna terminate a freeway in a DDI?
* Why can't 167 end at 509? Why do we need a number change for no reason?
* What's 509's future routing south of the new freeway to connect it to the rest of the road?
* Where is it supposed to head north?

jakeroot:

--- Quote from: Alps on December 04, 2020, 04:25:39 PM ---It's not April Fools Day! You can't just post this!

--- End quote ---

meh

they've been planning this thing for like 738 years and it was only this year they finally broke ground. Regular updates might actually become a thing.


--- Quote from: Alps on December 04, 2020, 04:25:39 PM ---Thoughts:
* Really, you're gonna terminate a freeway in a DDI?
* Why can't 167 end at 509? Why do we need a number change for no reason?
* What's 509's future routing south of the new freeway to connect it to the rest of the road?
* Where is it supposed to head north?

--- End quote ---

One thing to note is at the WA-167/WA-161 interchange, that will be a full SPUI as shown in the EIS image. The renderings were made right before that decision.

* The DDI conclusion is dumb I agree, although I think it was changed when the ramps to/from the south were added. I think ramps to/from the north were the only original inclusion. With that setup, a continuous green-T would have been easy to achieve.

* I don't like that 167 is extending to Fife at all since it results in some backwards cardinal directions; I'd rather see 509 Spur be the entire route.

I will post some more images of the 509 extension if I can find any. Most of the renderings have been from 24th Ave S down to Kent-Des Moines Road, where the biggest interruptions will be.

This video has some renders in it for the 509. Skip to 0:43 for a render of the proposed parclo at 188th:

//www.youtube.com/watch?v=t20saLhT35Y

KEK Inc.:
My guess for the DDI is the lack of sufficient funding.  Utah used continuous flow interchanges for a while until they finally had funding to upgrade the Bangerter Highway corridor to a limited-access freeway with SPUIs. 

A future flyover from SB I-5 to NB WA-167 would be the only thing really necessary in that design (since a lot of people from Seattle may use that route to get to WA-410 for Crystal Mtn / Sunrise / Chinook Pass and even access to WA-161 for access to Paradise).  There's already a dedicated bypass from NB I-5 to NB WA-167 and SB WA-167 to NB I-5.  Granted, I'm not familiar with how much Sumner - Tacoma traffic there is.

I notice that 509 has toll points.  I'm hoping they will finally upgrade WA-99 north of the 1st Ave Bridge to freeway standards.  I don't mind paying the toll on the tunnel since I live in Fremont.  It's much more convenient than taking I-5. 

The Ghostbuster:
I'm happy to hear that WA 167 will finally be built to Interstate 5. The freeway has dead-ended at WA 161 long enough. Once the WA 167 freeway is complete, will existing 167 along River Road be reverted to local control as a city street?

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