Author Topic: WY: I-25 Exit 186  (Read 3534 times)

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Offline the_spui_ninja

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WY: I-25 Exit 186
« on: August 01, 2017, 11:38:15 pm »
This is a mess (see attachment). From GMSV, it looks like US 20, 26, and 87 leave I-25 at the main Exit 186 and go down Beverly St to Yellowstone Hwy, which would mean all their business loops end at Yellowstone and Beverly. However, the extra onramp from Yellowstone complicates the I-25 business loop, causing signage for I-25 south to be on Yellowstone and I-25 north to be on Beverly. Thoughts?

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Offline sipes23

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Re: WY: I-25 Exit 186
« Reply #1 on: August 02, 2017, 05:39:15 pm »
I could field check these tonight or tomorrow. It's really a mess down there, and the construction on Yellowstone isn't helping.

Edit to add: I know off the top of my head that the Beverly Street exit is missing a movement onto EB I-25.

It's maybe three miles from home. (And I think I reported a related issue about this mess earlier this summer. It's a massive mess.)
« Last Edit: August 02, 2017, 05:41:48 pm by sipes23 »

Offline yakra

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Re: WY: I-25 Exit 186
« Reply #2 on: August 02, 2017, 06:43:12 pm »
Quote
Thoughts?
I don't maintain Wyoming, so I don't have any kind of final say here. But it looks pretty well done for the mess we were given to work with.

From the I-25 perspective, the usual practice for "double half interchanges" is (with a few exceptions) to pick one central point and position the waypoint there. Yes, it's more of a ¾ + ¼ situation here, but close enough; it's more or less in keeping with that guideline, and looks good here IMO.

For US20/26/87, we've got a bit of a couplet situation going on, with one direction taking F Street, and the other taking Beverly and Yellowstone. For couplets, the usual practice is to not favor one direction over the other; we'll often run the route trace down the middle between one-way pairs. Or for shorter couplets, just cut across from one end of it to the other, or even place a waypoint smack in the middle. This looks like a good candidate for the latter. Just move it a bit away from dead center and have the coords match up with I-25, and then you get your Intersecting/Concurrent Routes listed.

And the business routes' end, we're dealing with the couplet situation again; they don't start & end at the same place, which could make point placement a pain. If we run the route diagonally up between both directions of traffic, we meet the existing waypoint & happily add some more (Intersecting/Concurrent!) routes to the same junction.
Compare the north end of NJ18.

The only thing I would change is to move the endpoint of US87BusCas to 42.855298°, -106.290107°, to fix the concurrency with the other business routes.
« Last Edit: August 02, 2017, 06:47:38 pm by yakra »
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Offline the_spui_ninja

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Re: WY: I-25 Exit 186
« Reply #3 on: August 02, 2017, 08:16:32 pm »
The only thing I would change is to move the endpoint of US87BusCas to 42.855298°, -106.290107°, to fix the concurrency with the other business routes.
That would probably fix it; I'll cut the closed movement out of OSM now.

Will the construction on Yellowstone change the current configuration?
« Last Edit: August 02, 2017, 08:18:43 pm by the_spui_ninja »
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Offline sipes23

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Re: WY: I-25 Exit 186
« Reply #4 on: August 03, 2017, 03:16:47 pm »
The only thing I would change is to move the endpoint of US87BusCas to 42.855298°, -106.290107°, to fix the concurrency with the other business routes.
That would probably fix it; I'll cut the closed movement out of OSM now.

Will the construction on Yellowstone change the current configuration?

I doubt it. It looks like a reconstruction rather than anything new, but it's not done yet.

Offline si404

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Re: WY: I-25 Exit 186
« Reply #5 on: August 03, 2017, 03:29:16 pm »
The only thing I would change is to move the endpoint of US87BusCas to 42.855298°, -106.290107°, to fix the concurrency with the other business routes.
I've done that locally, so it will be in the browser later.