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National Boards => General Highway Talk => Traffic Control => Topic started by: jbnv on December 06, 2019, 09:20:32 PM

Title: Pentagon paradises
Post by: jbnv on December 06, 2019, 09:20:32 PM
Has someone compiled a list of the jurisdictions that make consistent use of the pentagon shield? (I'd include in the list the counties or other jurisdictions smaller than a state/province that have numbered road systems signed consistently with shields of any shape.)

If not, we can start one here.

States
Florida
Illinois
Iowa
Minnesota
New Jersey
New York

Counties/Parishes
Alcorn, MS
Bienville, LA
Brooks, TX
Cass, TX (square)
Cherokee, AL
Chilton, AL
Columbiana, OH
Cullman, AL
Dallas, AL
DeKalb, AL
Dunklin, MO
Harvey, KS
Hays, TX
Holmes, OH (squares)
Jackson, AL
Jackson, TX (square)
Jefferson, OH
Jim Wells, TX
Lavaca, TX (square)
Lawrence, AL
Madison, OH
Mahoning, OH
McMinn, TN
Ottawa, OH
Phillips, AR
Pike, AL
Polk, AR
Riley, KS
Robertson, TX
Seneca, OH
Smith, MS
Somervell, TX
Stark, OH
Summit, OH
Terrebonne, LA
Tippah, MS
Tuscawaras, OH
Washington, AR
Woodruff, AR
Yalobusha, MS

Cities/Other Jurisdictions
Winnipeg, MB (custom shape)
Title: Re: Pentagon paradises
Post by: US71 on December 06, 2019, 09:32:36 PM
Quote from: jbnv on December 06, 2019, 09:20:32 PM
Has someone compiled a list of the jurisdictions that make consistent use of the pentagon shield? (I'd include in the list the counties or other jurisdictions smaller than a state/province that have numbered road systems signed consistently with shields of any shape.)

If not, we can start one here.

Washington County, Arkansas

Conway County, AR (names instead of numbers)
(https://live.staticflickr.com/7889/40358132863_5bef76fcd3_w_d.jpg)
Title: Re: Pentagon paradises
Post by: TheGrassGuy on December 07, 2019, 09:51:14 AM
New York (except for Erie and Wayne counties, and also a few non-standard schemes predating the pentagon)

Some counties in California (such as San Diego and Monterey)

Columbiana, Jefferson, Madison, Mahoning, Ottawa, Seneca, Stark, Summit, and Tuscawaras County in Ohio
Title: Re: Pentagon paradises
Post by: Brandon on December 07, 2019, 09:58:56 AM
On the other hand, Wisconsin is the complete antithesis of this.
Title: Re: Pentagon paradises
Post by: TheGrassGuy on December 07, 2019, 09:59:48 AM
Quote from: US71 on December 06, 2019, 09:32:36 PM
Washington County, Arkansas

Conway County, AR (names instead of numbers)
(https://live.staticflickr.com/7889/40358132863_5bef76fcd3_w_d.jpg)
Those shields remind me of the county line markers on the GSP in NJ, which are shaped like pentagon County route markers, but instead of a number, they read "now entering" and then the county name.
Title: Re: Pentagon paradises
Post by: Rothman on December 07, 2019, 11:10:20 AM
Quote from: TheGrassGuy on December 07, 2019, 09:51:14 AM
New York (except for Erie and Wayne counties, and also a few non-standard schemes predating the pentagon)

Some counties in California (such as San Diego and Monterey)

Columbiana, Jefferson, Madison, Mahoning, Ottawa, Seneca, Stark, Summit, and Tuscawaras County in Ohio
Hm.  I thought there were Finger Lakes counties that also did not consistently use the pentagon.
Title: Re: Pentagon paradises
Post by: TheGrassGuy on December 07, 2019, 11:30:58 AM
Quote from: Rothman on December 07, 2019, 11:10:20 AM
Quote from: TheGrassGuy on December 07, 2019, 09:51:14 AM
New York (except for Erie and Wayne counties, and also a few non-standard schemes predating the pentagon)

Some counties in California (such as San Diego and Monterey)

Columbiana, Jefferson, Madison, Mahoning, Ottawa, Seneca, Stark, Summit, and Tuscawaras County in Ohio
Hm.  I thought there were Finger Lakes counties that also did not consistently use the pentagon.
OK, maybe there are a few more but IDK.
Title: Re: Pentagon paradises
Post by: formulanone on December 07, 2019, 11:33:14 AM
Iowa: extensively throughout the state, is there a county that doesn't use them?

Alabama: most counties, though none for Madison or Etowah, almost none in Morgan County. Highest concentrations: Cullman, Cherokee, DeKalb, Chilton, Dallas with hundreds or even thousands.

Mississippi: Alcorn, Tippah, Smith, Lafayette, Yalobusha, Prentiss (https://www.flickr.com/photos/formulanone/48010829931), and Union (https://www.flickr.com/photos/formulanone/48010833646). Limited usage (or none) elsewhere.

Tennessee: McMinn has hundreds, but nothing in the rest of the state.

Florida: most counties, but not used in Duval or Miami-Dade Counties. Only a few posted in Monroe or Broward. Most follow old state secondary or decommissioned road numbers. A few like Sumter and Pinellas, also have their own numbering system.

Texas: a few use them...Hays, Jim Wells, Robertson, Brooks use pentagon shapes. A few more like Jackson, Lavaca, and Cass use a square or rectangle.

Kansas: haven't driven that much of it, but Harvey County has several, and Riley (https://www.flickr.com/photos/formulanone/28267191023) County had a lot of them.

Louisiana: Terrebonne Parrish uses a bunch, but not an overwhelming amount. Noted a few in St. Mary Parrish along US 90.

Arkansas: can include Woodruff (https://www.flickr.com/photos/formulanone/30833275088) , Phillips (https://www.flickr.com/photos/formulanone/15035423345/), and Cross (https://www.flickr.com/photos/formulanone/29766689187) Counties as users of the pentagon.

Missouri: Dunklin County uses them outside cities to denote township roads (?)

(https://live.staticflickr.com/2874/33708448645_ce34b15caf_b.jpg) (https://flic.kr/p/TmGBp4)
Title: Re: Pentagon paradises
Post by: US71 on December 07, 2019, 02:06:47 PM
Minnesota seems to be mix n match 

(https://live.staticflickr.com/4365/36651122202_3d227ac529_w_d.jpg)
Title: Re: Pentagon paradises
Post by: Brian556 on December 07, 2019, 03:09:19 PM
Jackson Co, Alabama sues them for all county roads.

Somervell County, Texas has them. Some are 18x18
https://www.google.com/maps/@32.167058,-97.8983613,3a,15.5y,13.61h,89.79t/data=!3m6!1e1!3m4!1skHu20sO-yVVDf-HBmVHfvg!2e0!7i16384!8i8192 (https://www.google.com/maps/@32.167058,-97.8983613,3a,15.5y,13.61h,89.79t/data=!3m6!1e1!3m4!1skHu20sO-yVVDf-HBmVHfvg!2e0!7i16384!8i8192)
Title: Re: Pentagon paradises
Post by: paulthemapguy on December 07, 2019, 03:13:55 PM
Illinois counties that use the pentagon shield:

Lake and McHenry go ham and mark their county highways as if they are state or US routes, complete with junction markers, reassurance markers, and guide markers at intersections.  This applies to all junctions where a county road meets a state, US, or other county highway.

Many counties in Illinois post only the reassurance markers, with no banner.  I've seen this in LaSalle, Kendall, Winnebago, St. Clair, Kankakee, Iroquois, Vermilion, Champaign, Piatt, DeWitt, Logan, Macon, Effingham, Coles, Douglas, McDonough, Rock Island, Bureau, Henry, Knox, Woodford, and Piatt Counties.  Cook, Boone, DeKalb, and Kane Counties do this but not consistently.  McLean, Livingston, and DuPage will go one extra mile and provide "Begin" and "End" markers; I think Peoria County might do this as well.  I've seen Clay County mark their county roads, but it's done with the white rectangle marker like you'll see in Minnesota sometimes.

Edit: Perhaps I should have mentioned that a lot of counties in Illinois don't mark their county highways at all.  These counties include Grundy, Will, Ford, Stark, Jo Daviess, Whiteside, and most counties I didn't mention above.  I wouldn't regard Illinois is a state with county highway markers posted statewide.
Title: Re: Pentagon paradises
Post by: freebrickproductions on December 07, 2019, 03:26:14 PM
Quote from: formulanone on December 07, 2019, 11:33:14 AM
Alabama: most counties, though none for Madison or Etowah, almost none in Morgan County. Highest concentrations: Cullman, Cherokee, DeKalb, Chilton, Dallas with hundreds or even thousands.
Don't think Morgan County has any left anymore, as they stopped using county routes years ago from what I understand. The last one I'm aware of was in Laceys Springs and was removed some time back, it appears. Limestone County and Marshall County also lack country route shields, but on the other hand, as Brian556 mentioned, Jackson County has tons of them. I'd also say that Lawrence County, AL, has tons as well, based on my travels to/through there.

EDIT: Pike County also has a large number of them.
Title: Re: Pentagon paradises
Post by: steviep24 on December 07, 2019, 03:59:27 PM
Quote from: TheGrassGuy on December 07, 2019, 11:30:58 AM
Quote from: Rothman on December 07, 2019, 11:10:20 AM
Quote from: TheGrassGuy on December 07, 2019, 09:51:14 AM
New York (except for Erie and Wayne counties, and also a few non-standard schemes predating the pentagon)

Some counties in California (such as San Diego and Monterey)

Columbiana, Jefferson, Madison, Mahoning, Ottawa, Seneca, Stark, Summit, and Tuscawaras County in Ohio
Hm.  I thought there were Finger Lakes counties that also did not consistently use the pentagon.
OK, maybe there are a few more but IDK.
In New York, Monroe, Orleans, Niagara, Genesee and Ontario counties don't sign their county routes as well.
Title: Re: Pentagon paradises
Post by: MNHighwayMan on December 07, 2019, 06:51:52 PM
Quote from: formulanone on December 07, 2019, 11:33:14 AM
Iowa: extensively throughout the state, is there a county that doesn't use them?

Polk County (the county most of Des Moines is in) doesn't sign its county roads, so yes: at least one.

Quote from: US71 on December 07, 2019, 02:06:47 PM
Minnesota seems to be mix n match 

It very much is. Some counties (e.g. Ramsey, Anoka) only use pentagons. Other counties (e.g. Isanti, Stearns) use pentagons to designate county state-aid highways, and white squares for regular county roads. Yet others (e.g. Carver, Itasca) only use the squares.
Title: Re: Pentagon paradises
Post by: ilpt4u on December 07, 2019, 07:20:49 PM
Does any County, other than Clark County, NV (Vegas), have a Pentagon Shielded Freeway?
Title: Re: Pentagon paradises
Post by: MNHighwayMan on December 07, 2019, 07:24:21 PM
Quote from: ilpt4u on December 07, 2019, 07:20:49 PM
Does any County, other than Clark County, NV (Vegas), have a Pentagon Shielded Freeway?

Hennepin CR-62 (now MN-62) would have been before MnDOT took it over in 1988.
Title: Re: Pentagon paradises
Post by: TheGrassGuy on December 07, 2019, 07:28:40 PM
Quote from: ilpt4u on December 07, 2019, 07:20:49 PM
Does any County, other than Clark County, NV (Vegas), have a Pentagon Shielded Freeway?
Suffolk CR 92 (Nicolls Rd) has a freeway segment
Title: Re: Pentagon paradises
Post by: jbnv on December 07, 2019, 08:19:56 PM
Updated the list.
Title: Re: Pentagon paradises
Post by: tdindy88 on December 07, 2019, 08:31:47 PM
Michigan seems to feature plenty of county highways with pentagon shields throughout the state, more in Northern Michigan and the Upper Peninsula but I think they are around elsewhere in the state. They seem to treat them like secondary state highways and even have their own number coding system based on the region of the state where they are found. County roads beginning with letters A-C are on the western half of the Lower Peninsula, those starting with D-F are on the eastern half of the Lower Peninsula and G-H on the Upper Peninsula. Also, while the pentagon shield will feature the county name that the highway is passing through it appears that the highway may retain the same number across multiple counties.
Title: Re: Pentagon paradises
Post by: 1995hoo on December 08, 2019, 08:23:49 AM
Virginia is consistent in not using it. Theoretically, the two counties that maintain their own roads could use it (and I presume the independent cities would be treated like counties for this purpose if they chose to post route numbers), but insofar as I'm aware, that shield is not used anywhere in the Commonwealth.
Title: Re: Pentagon paradises
Post by: formulanone on December 08, 2019, 10:59:39 AM
Quote from: TheGrassGuy on December 07, 2019, 07:28:40 PM
Quote from: ilpt4u on December 07, 2019, 07:20:49 PM
Does any County, other than Clark County, NV (Vegas), have a Pentagon Shielded Freeway?
Suffolk CR 92 (Nicolls Rd) has a freeway segment

Osceola Parkway (CR 522) in Kissimmee; they're now posted on the freeway (tolled) segment (https://www.google.com/maps/@28.3402856,-81.4899234,3a,48.4y,266.29h,89.11t/data=!3m6!1e1!3m4!1s7Gg_REpQQW0BngStfvUelQ!2e0!7i16384!8i8192), though it has only 2-3 grade separations.
Title: Re: Pentagon paradises
Post by: TheGrassGuy on December 08, 2019, 12:36:00 PM
Quote from: 1995hoo on December 08, 2019, 08:23:49 AM
Virginia is consistent in not using it. Theoretically, the two counties that maintain their own roads could use it (and I presume the independent cities would be treated like counties for this purpose if they chose to post route numbers), but insofar as I'm aware, that shield is not used anywhere in the Commonwealth.
Don't VA and WV use circles for their county routes instead?
Title: Re: Pentagon paradises
Post by: csw on December 08, 2019, 12:37:06 PM
Southeastern Missouri uses quite a few - I've seen them along US 60 between the Mississippi River and Poplar Bluff, and north out of Poplar Bluff along US 67. Also in Perry County.

I've also seen them infrequently in central and southern Illinois - places I've seen them besides the ones Paul already mentioned are Clay, Edgar, and St Clair counties.

I have never seen one in Indiana. I think the only counties that really number their county roads are Elkhart and DeKalb, but Elkhart only posts it on street blades, and DeKalb doesn't post it at all, to my knowledge.
Title: Re: Pentagon paradises
Post by: TheGrassGuy on December 08, 2019, 12:58:05 PM
Thank you jbnv for the expansion. I've done a little exploration of the newly listed counties on GSV, and I've noticed a little oddity in how Dunklin County, MO signs it's county routes. You see, the reassurance markers are intended to be seen from the routes that conjoin with them, not themselves. I find this very unique and interesting. (Ex:
https://maps.goo.gl/izb7W989cw9mWgCm6
Title: Re: Pentagon paradises
Post by: TheGrassGuy on December 08, 2019, 01:00:48 PM
Does Arizona sign its county routes? Mohave County has CR 91 for former US 91, but I'm not sure if there are others, or even whether it's a "fake CR" like the ones in Utah.
Title: Re: Pentagon paradises
Post by: US 89 on December 08, 2019, 01:05:22 PM
Utah has a federal-aid route system that is signed with what I like to call "fake pentagons". Signage on these routes is by no means consistent and is pretty much absent in urban areas, but drive around enough in rural Utah and you'll see several of them, almost always at the beginning or end of the FA routes. They look like this:

(https://live.staticflickr.com/1801/43068684831_1f587c298f_c.jpg) (https://i.imgur.com/9cEGGIq.jpg)

Funny enough, there is at least one instance of a FA route being signed on a full pentagon in Tooele County (https://goo.gl/maps/nYnqE3HPwhqCUAGv6), but this is an error as that road is maintained by the city of Tooele.

Outside of the FA system, most Utah counties don't have signed county routes. Duchesne is one of the few that does, and there are plenty of pentagons to be found there (but I'm not sure I've ever seen one that isn't a reassurance shield). Washington County signs CR 91 on the old alignment of US 91, but I haven't seen any pentagons elsewhere in that county.

Uinta County, Wyoming signs its county routes quite well with pentagons, and those are even signed from the state roads like WYO 150.
Title: Re: Pentagon paradises
Post by: hbelkins on December 08, 2019, 04:05:12 PM
Quote from: TheGrassGuy on December 08, 2019, 12:36:00 PM
Quote from: 1995hoo on December 08, 2019, 08:23:49 AM
Virginia is consistent in not using it. Theoretically, the two counties that maintain their own roads could use it (and I presume the independent cities would be treated like counties for this purpose if they chose to post route numbers), but insofar as I'm aware, that shield is not used anywhere in the Commonwealth.
Don't VA and WV use circles for their county routes instead?

Virginia's "county" routes are actually state secondary highways.

Although West Virginia calls its routes "county" routes, they are state highways as well.
Title: Re: Pentagon paradises
Post by: kphoger on December 09, 2019, 01:46:13 PM
Quote from: MNHighwayMan on December 07, 2019, 06:51:52 PM

Quote from: US71 on December 07, 2019, 02:06:47 PM
Minnesota seems to be mix n match 

It very much is. Some counties (e.g. Ramsey, Anoka) only use pentagons. Other counties (e.g. Isanti, Stearns) use pentagons to designate county state-aid highways, and white squares for regular county roads. Yet others (e.g. Carver, Itasca) only use the squares.

I've even seen places in Minnesota that use one shape for JCT assemblies and a different shape for reassurance markers.
Title: Re: Pentagon paradises
Post by: MNHighwayMan on December 09, 2019, 05:29:43 PM
Quote from: kphoger on December 09, 2019, 01:46:13 PM
I've even seen places in Minnesota that use one shape for JCT assemblies and a different shape for reassurance markers.

Usually, that's a result of MnDOT and the county in question not being on the same page. MnDOT tries to sign county routes (in JCT assemblies, etc) on its roads with the same markers that the county itself uses on its own roads, but that is not always done right.

If you have an example of it happening on two county roads, I'd love to see it, since I can't think of an example of it happening that I know of.
Title: Re: Pentagon paradises
Post by: cl94 on December 09, 2019, 07:10:28 PM
Expanding on New York, the following counties do NOT use the pentagon:

Cayuga
Erie (formerly signed sporadically with custom shields featuring the county outline)
Genesee (numbers on blades)
Monroe
Montgomery
Nassau (Formerly signed with orange hexagons)
Niagara
Onondaga
Ontario (Road name is often "County Route XX")
Orleans
Schenectady (Numbers on blades, a few NYSDOT-installed pentagons exist)
Seneca
Wayne
Westchester
Wyoming

These plus the five in New York City (no CRs) make 20 counties that do not install pentagons. Some other notes:
- Herkimer County uses the pentagon, but only on blades.
- Warren, Tompkins, and Oneida started signing county routes within the past 15 years.
- Franklin formerly used a white-on-green square shield
- Orange and Ulster formerly used a diamond shield with the county outline (many examples remain).
- Albany County assigns a block of 50 county routes to each town. Most county routes have 3 digits and, even for 2-digit routes, 3-digit pentagons dominate.
- Suffolk County has multiple expressway-grade county routes signed as such. CR 97 (Nicolls Road) is mostly freeway between NY 27 and NY 25.
Title: Re: Pentagon paradises
Post by: kphoger on December 10, 2019, 10:40:27 AM
Quote from: MNHighwayMan on December 09, 2019, 05:29:43 PM

Quote from: kphoger on December 09, 2019, 01:46:13 PM
I've even seen places in Minnesota that use one shape for JCT assemblies and a different shape for reassurance markers.

Usually, that's a result of MnDOT and the county in question not being on the same page. MnDOT tries to sign county routes (in JCT assemblies, etc) on its roads with the same markers that the county itself uses on its own roads, but that is not always done right.

If you have an example of it happening on two county roads, I'd love to see it, since I can't think of an example of it happening that I know of.

I'm not sure if you meant a junction of two county roads, or if you just meant more than one example.  If the former, then I can't come up with an example, although I suspect I've seen a case or two when the county highway I was on runs along a county line.  However, if the latter, then see below.

Quote from: kphoger on October 16, 2017, 01:04:21 PM
This was Kandiyohi County ... Here are specific examples, in northeast—southwest order.  Notice that some of them match and some of them don't, for no reason apparent to me.

1 Advance junction assembly using white squares (https://goo.gl/maps/Zwbc5QRb8Am), even though...
...both highways (CR-6 (https://goo.gl/maps/T1w8t7qZhNp) & CR-143 (https://goo.gl/maps/xKAEgSRoKFS2)) use blue pentagon markers.
MN-6 is >100 miles away, MN-143 does not exist.

2 Advance junction sign using a white square (https://goo.gl/maps/AMNPgPAcfeC2), even though...
...CR-2 uses blue pentagon markers (https://goo.gl/maps/Y6ABAGcPJvx).
MN-2 does not exist.

3 Advance junction sign using a blue pentagon (https://goo.gl/maps/uqWKdNjUSyt), which...
...matches what CR-40 actually uses (https://goo.gl/maps/5TQLgXqZM6y).

4 Advance junction sign using a blue pentagon (https://goo.gl/maps/zesLwVjgdQK2), which...
...matches what CR-10 actually uses (https://goo.gl/maps/SFr3SPk1B392).

5 Advance junction sign using a blue pentagon (https://goo.gl/maps/t7JCiESwoLC2), which...
...matches what CR-127 actually uses (https://goo.gl/maps/dnM3FycZHTE2).

6 Advance junction sign using a white square (https://goo.gl/maps/FEZvuHiM6fM2), even though...
...CR-25 uses blue pentagon markers (https://goo.gl/maps/ZJRYe9nx1aH2).
MN-25 is >50 miles away.
Title: Re: Pentagon paradises
Post by: MNHighwayMan on December 10, 2019, 12:37:44 PM
Quote from: kphoger on December 10, 2019, 10:40:27 AM
I'm not sure if you meant a junction of two county roads, or if you just meant more than one example.  If the former, then I can't come up with an example, although I suspect I've seen a case or two when the county highway I was on runs along a county line.

I very much meant the former; sorry if that wasn't clear. Some of those examples you linked are very good examples of what I was talking about, though, where MnDOT wasn't on the same page as the county signing their own route.
Title: Re: Pentagon paradises
Post by: kphoger on December 10, 2019, 01:12:15 PM
Quote from: MNHighwayMan on December 10, 2019, 12:37:44 PM

Quote from: kphoger on December 10, 2019, 10:40:27 AM
I'm not sure if you meant a junction of two county roads, or if you just meant more than one example.  If the former, then I can't come up with an example, although I suspect I've seen a case or two when the county highway I was on runs along a county line.

I very much meant the former; sorry if that wasn't clear. Some of those examples you linked are very good examples of what I was talking about, though, where MnDOT wasn't on the same page as the county signing their own route.

Yeah, every spot where I think I might have seen that turns out to be correctly signed according to GSV.
Title: Re: Pentagon paradises
Post by: TheGrassGuy on December 23, 2019, 09:33:50 PM
San Juan County, CO?
Title: Re: Pentagon paradises
Post by: cjk374 on December 28, 2019, 09:25:35 AM
You can add Columbia County, AR to the list. I am there 5 days/week.

Up here in northern Louisiana, Webster Parish uses both pentagons (number) and blades (name) to label their roads.
Title: Re: Pentagon paradises
Post by: TheGrassGuy on January 19, 2020, 03:50:12 PM
Mississippi County, AR, as I learned while searching for unusual signs.
Title: Re: Pentagon paradises
Post by: Buck87 on January 19, 2020, 08:21:28 PM
Quote from: jbnv on December 06, 2019, 09:20:32 PM
Seneca, OH

Seneca County, Ohio does not use shields, just green and white sign blades that either have "CR" or "TR" preceding the number.

There is another Ohio County not mentioned yet that does have a custom shield, Scioto:

(https://upload.wikimedia.org/wikipedia/commons/6/67/Scioto_County_Route_28_OH.svg)

This design is used all over the county, with the exception of the new OH 823/CR 28 interchange, which has pentagon shields on the big green exit signs, end of ramp trail blazers and nearby reassurance markers. 

Title: Re: Pentagon paradises
Post by: US 89 on January 20, 2020, 01:16:50 AM
I realize other places (NJ) may do this, but the only place I've ever seen a county route pentagon signed from an interstate was on I-70 in Jefferson County, Colorado (https://goo.gl/maps/MmKj61ziJ1oZj5F16).
Title: Re: Pentagon paradises
Post by: TheGrassGuy on January 20, 2020, 09:55:41 AM
Quote from: US 89 on January 20, 2020, 01:16:50 AM
I realize other places (NJ) may do this, but the only place I've ever seen a county route pentagon signed from an interstate was on I-70 in Jefferson County, Colorado (https://goo.gl/maps/MmKj61ziJ1oZj5F16).
There are tons of them in Michigan too
Title: Re: Pentagon paradises
Post by: MNHighwayMan on January 20, 2020, 09:57:11 AM
Quote from: US 89 on January 20, 2020, 01:16:50 AM
I realize other places (NJ) may do this, but the only place I've ever seen a county route pentagon signed from an interstate was on I-70 in Jefferson County, Colorado (https://goo.gl/maps/MmKj61ziJ1oZj5F16).

Must have never been on an Interstate in Minnesota or Iowa.
Title: Re: Pentagon paradises
Post by: GaryV on January 20, 2020, 02:37:59 PM
Quote from: TheGrassGuy on January 20, 2020, 09:55:41 AM
Quote from: US 89 on January 20, 2020, 01:16:50 AM
I realize other places (NJ) may do this, but the only place I've ever seen a county route pentagon signed from an interstate was on I-70 in Jefferson County, Colorado (https://goo.gl/maps/MmKj61ziJ1oZj5F16).
There are tons of them in Michigan too
If by "tons" you mean maybe a dozen at best, then sure.  Many of the inter-county highways are not marked in the field at all, but some are and are signed on exits from Interstates.

But even where the county has erected roadside markers, some don't quite make it to the Interstate - there's a short portion of a state highway or an unnumbered county road between the exit and the inter-county route.
Title: Re: Pentagon paradises
Post by: kphoger on January 20, 2020, 04:28:16 PM
Quote from: GaryV on January 20, 2020, 02:37:59 PM

Quote from: TheGrassGuy on January 20, 2020, 09:55:41 AM

Quote from: US 89 on January 20, 2020, 01:16:50 AM
I realize other places (NJ) may do this, but the only place I've ever seen a county route pentagon signed from an interstate was on I-70 in Jefferson County, Colorado (https://goo.gl/maps/MmKj61ziJ1oZj5F16).

There are tons of them in Michigan too

If by "tons" you mean maybe a dozen at best, then sure.  Many of the inter-county highways are not marked in the field at all, but some are and are signed on exits from Interstates.

But even where the county has erected roadside markers, some don't quite make it to the Interstate - there's a short portion of a state highway or an unnumbered county road between the exit and the inter-county route.

You called it.  Unless I'm missing one, I count 11 Interstate exits in Michigan signed with pentagons.

I-69
none

I-75
Roscommon County – Exit 227 – Pentagon F97 (on supplemental signage)
Cheboygan County – Exit 301 – Pentagon C58
Cheboygan County – Exit 322 – Pentagon C64
Cheboygan County – Exit 326 – Pentagon C66
Mackinac County – Exit 348 – Pentagon H63 (signed northbound only)

I-94
none

I-96
Ottawa County – Exit 10 – Pentagon B31
Ottawa County – Exit 16 – Pentagon B35
Livingston County – Exit 137 – Pentagon D19

I-194
none

I-196
Allegan County – Exit 30 – Pentagon A2
Allegan County – Exit 36 – Pentagon A2
Allegan County – Exit 41 – Pentagon A2 (because two just wasn't enough)

I-275
none

I-296
none

I-375
none

I-475
none

I-496
none

I-675
none

I-696
none
Title: Re: Pentagon paradises
Post by: formulanone on January 21, 2020, 08:47:39 AM
Looks like South Dakota uses them outside the cities, but I can only confirm their use in Pennington, Custer, and Fall River Counties.

I also noticed several on BGS' along I-29 south of Fargo, in Cass and Richland Counties, so North Dakota uses them a fair bit as well.