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WA 509

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Max Rockatansky:
The second clinch of the current trip was WA 509 (at least I think).  Decently curvy road from 99 to I-705.

https://flic.kr/s/aHskAMhidq

Several questions popped into my head while driving this route:

-  Why is the signage between the end of the freeway south of SeaTac so shitty on the surface streets? 
-  Is 509 actually a gapped route or is 516 and 99 considered to be a continuation to Dash Point Road?

I'll work up something on this one later this week.  I'm looking forward to digging into some old maps on 509, it seems too weird not to have an interesting back story.

Max Rockatansky:
Finished the blog entry on WA 509:

http://surewhynotnow.blogspot.com/2018/05/washington-state-route-509.html

Kacie Jane:

* With the exception of 99, I think most surface street SRs in that area have pretty poor signage.
* Yes, it technically follows 516 and 99. The mileposts don't line up though, because the northern "independent" section used to be longer, continuing past 516 and meeting 99 at 16th Ave south of 272nd Street.

Max Rockatansky:

--- Quote from: Kacie Jane on May 15, 2018, 03:03:18 PM ---
* With the exception of 99, I think most surface street SRs in that area have pretty poor signage.
* Yes, it technically follows 516 and 99. The mileposts don't line up though, because the northern "independent" section used to be longer, continuing past 516 and meeting 99 at 16th Ave south of 272nd Street.
--- End quote ---

I'm assuming the section on 16th survived a little while after being renumbered from 1V.  Any idea when it might have been decommissioned?

Kacie Jane:
Much longer than that.  I'm not 100% sure, but it may have been 1992, when a bunch of SRs were changed.

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