[Page Update|Guidance Change] County Highway Naming

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[Page Update|Guidance Change] County Highway Naming

Postby hawkeygoal » Mon Jun 20, 2016 1:36 am

The following content is being proposed for addition to the Illinois state wiki:

US, State, and County Route Naming

The goal of the update is to revise guidance on the naming of county and township roads in Illinois. At present county highways and county roads, share a common CR- prefix, which complicates proper identification for road type/functional classification purposes. The proposal separate county highway (CH), county road (CR) and township road (TR) designations.

This will amend guidance in the Major roads section of the Illinois wiki..

Public Request for Comment
This proposal will be open for discussion through June 27th. At that time, discussion will close, and a vote on the proposal will be taken.
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Re: [Page Update|Guidance Change] County Highway Naming

Postby Bigbear3764 » Mon Jun 20, 2016 10:07 pm

My question is how are we going to differentiate between using CR and CH?
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Re: [Page Update|Guidance Change] County Highway Naming

Postby ehepner1977 » Mon Jun 20, 2016 10:58 pm

My bad on this as I missed that the explanation for differentiation had fallen off the proposal. There should be a section explaining that CH applies to county maintained highways, typically have 1 or 2 digit designators, and do not carry cardinals. County highways are found statewide and typically (although I do know of one exception in Woodford county) are not used for addressing. Generally speaking, these should only be alt names. The primary purpose for even naming is to indicate a type upgrade to PS as they are typically fc'd as collectors.

County roads, on the other hand, are found only in some counties, typically have 3 or 4 digit designators with a cardinal and are usually used for addressing. CR can be found in both primary and alt names if the primary is a state or US route with the coordinate system used for addressing.

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Re: [Page Update|Guidance Change] County Highway Naming

Postby hawkeygoal » Tue Jun 21, 2016 1:55 am

This comes up after this leaves "committee?" :lol:

This is the section dealing with identification of county highways/routes:
Proper sourcing of county routes and highways is important. The interactive IDOT functional classification map uses a third-party base map source which may not be correct. In order of preference, source county route/highway numbering from WME SV images less than three years old, published county information, or the IDOT county highway maps available at IDOT Maps.

Numbered county roads, as ehepner1977 points out, are coordinate-based found in rural areas. County highways are identified on the IDOT maps available at the link in the quoted paragraph. For example, Lake County. For whatever reason, the letter-number seqence on the IDOT map is reversed from the actual shields. Often counties maintain their own highway list ("published county information") which is more timely. Therefore, a county published list takes precedence over the IDOT maps.

Suggest we amend the above paragraph as follows:
Proper sourcing of county routes and highways is important. The interactive IDOT functional classification map uses a third-party base map source which may not be correct. In order of preference, source county route/highway shield numbering from WME SV images less than three years old, published county information, or the IDOT county highway maps available at IDOT Maps (Please note, letters precede numbers in road naming and on shields).

We'll have to track down a public domain Illinois county shield image (county shield with an Illinois county name on it) to include.

Agreed? Competing amendments?
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Re: [Page Update|Guidance Change] County Highway Naming

Postby Bigbear3764 » Tue Jun 21, 2016 2:59 am

hawkeygoal wrote:This comes up after this leaves "committee?" :lol:

Thought we talked about it like Eric described it.

hawkeygoal wrote:This is the section dealing with identification of county highways/routes:
Proper sourcing of county routes and highways is important. The interactive IDOT functional classification map uses a third-party base map source which may not be correct. In order of preference, source county route/highway numbering from WME SV images less than three years old, published county information, or the IDOT county highway maps available at IDOT Maps.

Numbered county roads, as ehepner1977 points out, are coordinate-based found in rural areas. County highways are identified on the IDOT maps available at the link in the quoted paragraph. For example, Lake County. For whatever reason, the letter-number seqence on the IDOT map is reversed from the actual shields. Often counties maintain their own highway list ("published county information") which is more timely. Therefore, a county published list takes precedence over the IDOT maps.

Suggest we amend the above paragraph as follows:
Proper sourcing of county routes and highways is important. The interactive IDOT functional classification map uses a third-party base map source which may not be correct. In order of preference, source county route/highway shield numbering from WME SV images less than three years old, published county information, or the IDOT county highway maps available at IDOT Maps (Please note, letters precede numbers in road naming and on shields).

We'll have to track down a public domain Illinois county shield image (county shield with an Illinois county name on it) to include.

Agreed? Competing amendments?


Still is confusing/vague to me. If I don't get it, many others won't.

Some how we make it what Eric described.
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Re: [Page Update|Guidance Change] County Highway Naming

Postby hawkeygoal » Tue Jun 21, 2016 3:21 am

I'm open to any suggested single paragraph that includes sourcing information. Heck... even two. But that open description of what they are doesn't say how to find valid sources for the information since there's a lot of bogus 3rd party information out there.
Last edited by hawkeygoal on Tue Jun 21, 2016 3:31 am, edited 1 time in total.
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Re: [Page Update|Guidance Change] County Highway Naming

Postby ehepner1977 » Tue Jun 21, 2016 3:30 am

(Been working on this while Bear and Hawkey replied at least once each)
hawkeygoal wrote:This comes up after this leaves "committee?" :lol:
Oops

Admitting some bias, agree with Bear, need to have a short description of how to differentiate between CH and CR. As the current map stands, there's an awful lot of CR that either should be CH or possible not even be used e.g. I've come across some alt CR- in McLean County which is not a "county road" addressing county, they use XX N/E XXX E/N for addressing.

To that end, suggest amending
County routes or highways may or may not be shielded. These roads nearly always carry a local primary street name. CH- designations apply to alternate names almost exclusively. The designation is used to identify county routes for proper application of road types.
to
County Highways (CH-) are county maintained roads which typically also carry a locally designated primary name used for addressing purposes. CH- designators are typically 1-3 alphanumeric characters (e.g. CH-7 or CH-A19) and are almost exclusively used to indicate an upgraded road type of PS.

County roads (CR-) are used for addressing, and are typically a primary name; although, they can be alt names when the primary road names is a State or US Highway and the county has chosen to use the CR- designator for addressing. CR- designated roads are typically 3 or 4 digits with a cardinal direction after the digits (e.g. CR-2300 E or CR-600 N).
If others feel it necessary, I can type up a brief summary of the different coordinate naming schemes, such as Street/Ave, CR-, or XXX E/N.

Would also move
(Please note, letters precede numbers in road naming and on shields).
to the above paragraph.
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Re: [Page Update|Guidance Change] County Highway Naming

Postby hawkeygoal » Tue Jun 21, 2016 3:36 am

Why go through all the extra description if you can just look at a county publish lists (such as Will county) or the IDOT maps (which clearly label them "County Highway Route")?

Also need to make a note that not all counties shield their county highways and need to specify where to find correct information.
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Re: [Page Update|Guidance Change] County Highway Naming

Postby ehepner1977 » Tue Jun 21, 2016 1:00 pm

hawkeygoal wrote:Why go through all the extra description if you can just look at a county publish lists (such as Will county) or the IDOT maps (which clearly label them "County Highway Route")?

Also need to make a note that not all counties shield their county highways and need to specify where to find correct information.



Short version, because IMO, it's important to understand/make clear a "why" behind the guidance. We can still leave the paragraph about sourcing, I just suggest adding/amending the "how to differentiate between CH and CR paragraph."

Agree with keeping the sentence that suggests that not all county highways are shielded. And, on further reflection, might even consider upgrading the admonition against using the FC map for naming to include something along the lines of "The interactive IDOT functional classification map uses a third-party base map source which is subject to copyright restrictions and may not be correct, therefore, it should not be used as a source for naming information"
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Re: [Page Update|Guidance Change] County Highway Naming

Postby Bigbear3764 » Tue Jun 21, 2016 10:25 pm

Agreed
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