Hi, so I was wanting to know more about how different states mark mileposts along non-Interstate highways (that is, US and state highways). It seems to vary widely from state to state - here's what I know.
- Many states have mileposts along US and state highways in exactly the same manner as interstates; that is, they sign them every mile, statewide, measuring from the south or west terminus or state line. I know for a fact that Idaho, Iowa, Kansas, Minnesota, Nebraska, South Dakota, Wisconsin, and Wyoming do so, using the standard green vertical signs you would see on an interstate, or (on two-lane roads) a smaller variant thereof. I also know that Indiana does similar, but the markers themselves are small blue rectangles instead.
- Some states reset mileage at county lines, such as California, Illinois, and Pennsylvania. (I believe that in PA, they use small white squares that increment by 10 every mile. Also, in New York State, they have so-called "reference markers" which measure tenths of a mile from the start of a "control segment" (basically a town line); they also have a code for the county you're in, as well as the order the county appears in along the route.
- Other states use conventional mile markers but measure it in some other fashion. In Arizona, the mile markers on one highway start at whatever the marker was on the *other* highway; for example, if Highway 2 starts at mile marker 50 of Highway 1, the markers on Highway 2 begin at 50. Oregon, meanwhile, is truly bizarre: the mile markers are based on unsigned internal "highway" designations, of which one signed route can have several; thus, a given road in Oregon can have multiple ranges of mile markers, and thus duplicate ones.
- And some other states (such as Missouri) don't even bother to have mile markers along non-interstates at all.
These are the examples I know of. What might the mile markers (or lack thereof) on non-interstates be like in other states?
Wisconsin put those on freeways and expressways.
Quote from: KCRoadFan on August 07, 2020, 05:45:23 PM
- And some other states (such as Missouri) don't even bother to have mile markers along non-interstates at all.
These are the examples I know of. What might the mile markers (or lack thereof) on non-interstates be like in other states?
With a couple of exceptions:
- U.S 65 Between AR and Buffalo
-MO 21 between MO 141 and MO B (Jefferson County)
-US 54 through Osage Beach.
I'm probably missing some.
- Vermont uses reference markers not unlike New York's, but measure in hundredths of a mile and they reset at town lines (as opposed to county lines). There are only three route segments I know of ("Super 7" between Bennington and Manchester, the freeway part of US 4, and VT 289) that utilize more traditional milemarkers in the same manner as the Interstate system.
- Alabama also uses the standard green vertical signs, but with a twist: along US routes, the milemarkers follow the underlying hidden state route, so you have a few instances (in particular US 45, US 231, and US 431) that have more than one milemarker system because they have more than one underlying hidden state route.
- New Hampshire does not milemarker ALL of their non-Interstate highways, but many of them do have milemarkers. They're also somewhat unique in that, like their Interstates, they are in 0.2 mile increments and include a small route shield at the top of the sign.
- Mississippi, as of 2008 when I left, did not post milemarkers on their non-Interstates.
With Illinois/IDOT Reference Markers, yes they reset at County Lines, but "0" is not West and South. I'm pretty sure "0" is East and North, but I could be mistaken.
Also, Reference Markers are used on many, if not most/all IDOT routes, even unsigned state routes or old alignments of state/US routes, so the reference markers are a way to discover "hidden" route numbers, if you will
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fwww.billburmaster.com%2Frmsandw%2Fillinois%2Fimages%2F911mp1.jpg&hash=dc91541ac7ed8f5083a1836c17e18d0521cf1340)
An example from Old US 51 in Union County, IL, north of Cobden. Photo sourced from billburmaster.com's page on Illinois State ID Routes
http://www.billburmaster.com/rmsandw/illinois/misc/il900.html
Texas uses stupid reference markers that measure from a point in New Mexico for some reason. 0,0 is the most northern and most western edges so east-west highways increase heading east, but north-south increase heading south. Reference markers start in the west or north depending on where in the grid the route is. They are signed with a small green marker just under the route shied every 2 miles (they are easy to spot because they are the shields without a cardinal direction, usually). Good: you get a reassurance shield at least every 2 miles. Bad: you can't read the reference marker as you drive by because they are so tiny.
New Mexico and Arizona mark theirs like interstates. Arizona's current system is to mark mile 0 at west or south when the route enters the state or at the beginning. The old system was for non entering routes to begin their mile markers at routes they terminate into at the west or south. The ones that did that have been grandfathered in so they still start at arbitrary mile markers.
Michigan has mile markers on some non-Interstate freeways (both US and M highways). Also on US-2 and M-28 in the UP.
Massachusetts has mile markers on all freeways (except for the Lowell Connector). Hit or miss on non-freeways.
Minnesota posts one double-sided milepost on two-lane roads rather than two separate ones.
North Carolina posts mile-markers along most routes in the state, and freeways segments use those for exit numbers.
Virginia rarely uses exit numbers on non-interstates, and when they exist, they're usually based on sequential order or mileage of that particular freeway segment (I.E. Exit 1, 2, etc.). One exception is VA-168 in South Hampton Roads which posts both mile-markers and uses mile-based exit numbers, starting at MM 0 at the North Carolina state line and ending at MM 15 at I-64. The three other non-interstate freeways in the region, VA-164, US-17, and US-58, do not have exit numbers.
Indiana has a small blue reference marker on its state highways that can serve as a mile marker sign, though I don't think I see them everywhere on the highways. They are more used for bridges and such. Still, I will pass by signs that just have the mile on it with nothing to reference nearby. The mile markers are set from the state line to the west or south or wherever the highway starts.
The only regular looking mile markers on non-interstates are along the freeway portions of US 31 in Hamilton County, Kokomo and from Plymouth to South Bend and along Evansville roadways (US 41, SR 62, SR 66.)
In Harford County, Maryland, the Bel Air and Hickory bypasses (U.S. Route 1) have mile markers based on US 1's distance from the Baltimore County line. It goes from about 2.8 to 8.7, at both ends of U.S. 1 Business. There are also mile markers on MD 23 between US 1 and MD 165 and on MD 24 through Rocks State Park, based on the distances from their southern termini.
Ohio's state route mileages reset at the county border (using little white signs). Sections of state/US highways upgraded to freeway are often signed with the blue mile markers in the median (every 0.2 miles) like interstates in metro areas, and are numbered from the state line / beginning of the route like Interstates.
Example of OH-129: https://www.google.com/maps/@39.3822054,-84.4607684,3a,75y,125.24h,77.76t/data=!3m6!1e1!3m4!1suMkrXTuLc7jX5YzXY255Qw!2e0!7i16384!8i8192 (https://www.google.com/maps/@39.3822054,-84.4607684,3a,75y,125.24h,77.76t/data=!3m6!1e1!3m4!1suMkrXTuLc7jX5YzXY255Qw!2e0!7i16384!8i8192)
Caltrans uses Postmile Paddles which are based upon which county the highway segment is located in. Interestingly the counties tend to do their own thing regarding major roads. Some counties like Tulare use the Postmile System for major mountain highways. San Benito County uses Postmile Paddles for everything they maintain. Monterey County and a couple others actual use mile markers on major rural highways.
Alaska uses mileposts on all numbered state-maintained highways, and many state routes with no signed route numbers. Mileposts are based on route names rather than numbers, so the sequence resets when a numbered route jumps from one named route to another. For example, AK 2's east end is on the Alaska Highway, with MPs ascending east to west; then it switches to the Richardson Highway with an MP reset in Delta Junction; then it switches to the Steese and Elliott Highways, with an MP reset in Fairbanks.
Mile 0 is in some unusual places. For AK 2's Alaska Highway segment, it's in Dawson Creek BC. For the Parks Highway (AK 3), it's in downtown Anchorage, even though AK 3 starts about 35 miles to the northeast. For the Richardson Highway (AK 4 and part of AK 2), mile 0 is where Valdez used to be before it was wiped out in the 1964 Good Friday earthquake and tsunami. That highway was extended west about four miles to where Valdez was rebuilt in a safer location, but those four miles have no MPs, and the MPs on the rest of the highway were never changed.
Virginia does not put mile markers along non-interstates.
West Virginia resets mile markers at county lines - the mile markers are small white squares with the mile printed in black. (Somehow in 300+ photos from WV, I don't have a photo with one of these visible. Here's a GSV of a typical marker at a county line. (https://goo.gl/maps/AybvdYuA9WX4LPuu8)) The exception is ADHS roads (US 48, US 460, US 119, etc.), which have blue blades as mile markers.
I really hope Kansas doesn't do its "re-route US highways into meaningless oblivion" thing to this one, because I really do think this not-quite-expressway is a very useful highway for connecting major parts of the metropolitan area: https://goo.gl/maps/TJnwZhEVD1Eytcu56
Oregon posts their mileposts on their Routes per the underlying Highway, and in a West to East and North to South order.
53 (Warm Springs Highway) shares its 0 with 26 (Mt Hood Highway), and is why Route 35 (Hwy 26) is mileposted South to North.
92/2W Lower Columbia River (US 30 from Portland to Astoria), is the exception, with it running South to North from I-405 then East to West from Rainier.
Massachusetts (I believe) does mile post state highways, as I recall MA 1A near Ipswich has mile markers every 0.2 miles. Even though MA 1A is three segments (RI line to Attleboro (Google signs this wrong as part of US 1A from RI), Plainville to Dedham, Boston to NH) it takes into account hidden multiplexes with US 1. Now I know why MA 1A has a Mile 80, despite the three segments never being that long.
Pennsylvania's county system on state routes and US routes is odd. Every half mile the squares - PennDOT calls them segments - increment by 10, so there's 20 segments in a mile. Interstates use a different rule (I believe 1 segment = 0.1 miles). I think realignments and one-way sections change these segments, which is why some segments are non-zero (i.e. you'll see numbers like 83 instead of 80, reflecting a routing change of some kind). Multiplexes take into account the dominate route, usually that of higher rank or lower number (ex. PA 44's multiplex with PA 144 uses 44's segments, but its multiplex with US 220 uses 220's segments). Finally, there are no county routes in PA. PA has a massive list of state routes numbered from 1000+ and these also get white markers; the most common are state routes in the 2000's and 3000's. In special cases, like PA 61's abandoned Centralia segment, PennDOT seems to resign the route onto the unsigned SR; so you'll see signs saying "End SR 0061" and "Begin SR 2002" (the replacement), then "End SR 2002" and "Begin SR 0061" but its segment numbers aren't interrupted.
The PennDOT videolog (https://gis.penndot.gov/Videolog/) helps illustrate my point.
Quote from: KCRoadFan on August 07, 2020, 05:45:23 PM
Many states have mileposts along US and state highways in exactly the same manner as interstates; that is, they sign them every mile, statewide, measuring from the south or west terminus or state line. I know for a fact that Idaho, Iowa, Kansas, Minnesota, Nebraska, South Dakota, Wisconsin, and Wyoming do so, using the standard green vertical signs you would see on an interstate, or (on two-lane roads) a smaller variant thereof.
Add Utah to that list. Mileage counts from the south or west end of the route and is consistently marked with MUTCD-standard mile markers. While divided highways will have a separate marker for each direction, undivided roads have one double-sided marker posted on the right side in the direction of increasing mileage. I’m pretty sure Colorado is the same way.
Wyoming's standard milepost is actually a unique small marker with individual signs for each number - here's an example on WYO 789 (https://goo.gl/maps/xditCZFSBRbyvxyG8). How mileage is counted isn't necessarily consistent - it might not start at zero, or it might increase in the "opposite" direction depending on the route. Interstates mainly use the standard green mile markers instead, but you'll still find plenty of old-style markers on them - mostly at bridges.
Nevada uses a system similar to California, where mileage resets at county lines and is marked with white mileposts containing the 2-letter county abbreviation, route type and number, and mileage. Most mileposts look like this (https://i.imgur.com/wsPYrZs.jpeg), but a few routes have this newer "enhanced" style (https://i.imgur.com/6VRhHun.jpeg). Interstates have standard mile markers in addition to the traditional mileposts.
Quote from: jt4 on August 07, 2020, 07:32:09 PM
Ohio's state route mileages reset at the county border (using little white signs). Sections of state/US highways upgraded to freeway are often signed with the blue mile markers in the median (every 0.2 miles) like interstates in metro areas, and are numbered from the state line / beginning of the route like Interstates.
Example of OH-129: https://www.google.com/maps/@39.3822054,-84.4607684,3a,75y,125.24h,77.76t/data=!3m6!1e1!3m4!1suMkrXTuLc7jX5YzXY255Qw!2e0!7i16384!8i8192 (https://www.google.com/maps/@39.3822054,-84.4607684,3a,75y,125.24h,77.76t/data=!3m6!1e1!3m4!1suMkrXTuLc7jX5YzXY255Qw!2e0!7i16384!8i8192)
The mile marker situation on US-33 and US-35 can become confusing and inconsistent at times. US-35 in Dayton uses the blue interstate style markers (even on the non-freeway portion near Beavercreek) extending east through Xenia, based off mileage from the state line. Then, it uses the white mile markers based on county mileage east of Xenia, but with exit numbers based off its state mileage. But when you enter Ross county, the exit numbers go away (as of 2018 on my last trip). US-33 has exit numbers on most of its freeway miles east of Columbus and green mile markers on most if not all 70 mph sections (last trip 2017). West of the Columbus metro, the mile markers and exit numbers eventually disappear after Marysville and revert to the white sign county mileage.
The state line mileage and exit numbers on these roads was implemented between 2014-present, except in Dayton where the markers have existed for as long as I've lived.
Quote from: csw on August 07, 2020, 08:09:53 PM
Virginia does not put mile markers along non-interstates.
West Virginia resets mile markers at county lines - the mile markers are small white squares with the mile printed in black. (Somehow in 300+ photos from WV, I don't have a photo with one of these visible. Here's a GSV of a typical marker at a county line. (https://goo.gl/maps/AybvdYuA9WX4LPuu8)) The exception is ADHS roads (US 48, US 460, US 119, etc.), which have blue blades as mile markers.
ADHS Corridor mileage is based off the western/southern terminus of the corridor, not the US routes themselves, thus Corridor H mileposts begin at mile 0 in Weston, where no US route had a terminus until US-48 was signed, but the mileposts were in place long beforehand. The mileposts are posted in half mile increments.
Quote from: TheHighwayMan394 on August 07, 2020, 06:50:43 PM
Minnesota posts one double-sided milepost on two-lane roads rather than two separate ones.
This is how MDOT did things with US 2 and M-28. If the highway has four lanes at mile post, median or not, then they placed a milepost on each side of the highway, however.
Quote from: noelbotevera on August 08, 2020, 12:46:25 AM
Pennsylvania's county system on state routes and US routes is odd. Every half mile the squares - PennDOT calls them segments - increment by 10, so there's 20 segments in a mile. Interstates use a different rule (I believe 1 segment = 0.1 miles). I think realignments and one-way sections change these segments, which is why some segments are non-zero (i.e. you'll see numbers like 83 instead of 80, reflecting a routing change of some kind). Multiplexes take into account the dominate route, usually that of higher rank or lower number (ex. PA 44's multiplex with PA 144 uses 44's segments, but its multiplex with US 220 uses 220's segments). Finally, there are no county routes in PA. PA has a massive list of state routes numbered from 1000+ and these also get white markers; the most common are state routes in the 2000's and 3000's. In special cases, like PA 61's abandoned Centralia segment, PennDOT seems to resign the route onto the unsigned SR; so you'll see signs saying "End SR 0061" and "Begin SR 2002" (the replacement), then "End SR 2002" and "Begin SR 0061" but its segment numbers aren't interrupted.
The PennDOT videolog (https://gis.penndot.gov/Videolog/) helps illustrate my point.
-In addition to the above examples, you'll also find the Little White Signs on ramps, in rest areas, runaway truck ramps, and others.
-Also, PA uses the standard mile markers commonly found on Interstates on some non-interstate freeways, such as US 222 in Lancaster County, US 22 in the Lehigh Valley, and US 422 between Pottstown and King of Prussia.
In neighboring New Jersey, mile markers can be found on 2-lane roads: https://www.google.com/maps/@39.3045498,-74.8189765,3a,75y,340.35h,88.5t/data=!3m6!1e1!3m4!1sEBdLNc41JU308xnYu-nXcA!2e0!7i16384!8i8192?hl=en
Quote from: ilpt4u on August 07, 2020, 06:11:52 PM
With Illinois/IDOT Reference Markers, yes they reset at County Lines, but "0" is not West and South. I'm pretty sure "0" is East and North, but I could be mistaken.
Also, Reference Markers are used on many, if not most/all IDOT routes, even unsigned state routes or old alignments of state/US routes, so the reference markers are a way to discover "hidden" route numbers, if you will
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fwww.billburmaster.com%2Frmsandw%2Fillinois%2Fimages%2F911mp1.jpg&hash=dc91541ac7ed8f5083a1836c17e18d0521cf1340)
An example from Old US 51 in Union County, IL, north of Cobden. Photo sourced from billburmaster.com's page on Illinois State ID Routes
http://www.billburmaster.com/rmsandw/illinois/misc/il900.html
"0" is indeed at the west and south ends of the county. In fact, there are only three non-interstate freeways in the state that use proper mile markers and exit numbers: IL-6, IL-255, and IL-390. And those on IL-390 are every quarter mile due to it being a tollway. Otherwise, other non-interstate freeways in the state use the reference markers as above (examples: US-20, IL-53, IL-83).
https://www.aaroads.com/forum/index.php?topic=23596
NJDOT posts mileposts every 1/2 mile on non-highways (meaning, any road that's not a limited access highway), on nearly every state route.
Quote from: Crown Victoria on August 08, 2020, 05:06:32 AM
Quote from: noelbotevera on August 08, 2020, 12:46:25 AM
Pennsylvania's county system on state routes and US routes is odd. Every half mile the squares - PennDOT calls them segments - increment by 10, so there's 20 segments in a mile. Interstates use a different rule (I believe 1 segment = 0.1 miles). I think realignments and one-way sections change these segments, which is why some segments are non-zero (i.e. you'll see numbers like 83 instead of 80, reflecting a routing change of some kind). Multiplexes take into account the dominate route, usually that of higher rank or lower number (ex. PA 44's multiplex with PA 144 uses 44's segments, but its multiplex with US 220 uses 220's segments). Finally, there are no county routes in PA. PA has a massive list of state routes numbered from 1000+ and these also get white markers; the most common are state routes in the 2000's and 3000's. In special cases, like PA 61's abandoned Centralia segment, PennDOT seems to resign the route onto the unsigned SR; so you'll see signs saying "End SR 0061" and "Begin SR 2002" (the replacement), then "End SR 2002" and "Begin SR 0061" but its segment numbers aren't interrupted.
The PennDOT videolog (https://gis.penndot.gov/Videolog/) helps illustrate my point.
-In addition to the above examples, you'll also find the Little White Signs on ramps, in rest areas, runaway truck ramps, and others.
-Also, PA uses the standard mile markers commonly found on Interstates on some non-interstate freeways, such as US 222 in Lancaster County, US 22 in the Lehigh Valley, and US 422 between Pottstown and King of Prussia.
And then those use an entirely different segment scheme, where ramps easily reach into the 400s and 500s. I don't like it, and I wish PennDOT would be consistent but I'm not an employee. At least numbering is consistent (all ramps are 8000+).
May as well mention that PTC roads use standard mile markers. Don't know if bypasses get milemarkers (don't remember any in places like US 322's State College bypass).
Quote from: noelbotevera on August 08, 2020, 05:24:43 PM
Quote from: Crown Victoria on August 08, 2020, 05:06:32 AM
Quote from: noelbotevera on August 08, 2020, 12:46:25 AM
Pennsylvania's county system on state routes and US routes is odd. Every half mile the squares - PennDOT calls them segments - increment by 10, so there's 20 segments in a mile. Interstates use a different rule (I believe 1 segment = 0.1 miles). I think realignments and one-way sections change these segments, which is why some segments are non-zero (i.e. you'll see numbers like 83 instead of 80, reflecting a routing change of some kind). Multiplexes take into account the dominate route, usually that of higher rank or lower number (ex. PA 44's multiplex with PA 144 uses 44's segments, but its multiplex with US 220 uses 220's segments). Finally, there are no county routes in PA. PA has a massive list of state routes numbered from 1000+ and these also get white markers; the most common are state routes in the 2000's and 3000's. In special cases, like PA 61's abandoned Centralia segment, PennDOT seems to resign the route onto the unsigned SR; so you'll see signs saying "End SR 0061" and "Begin SR 2002" (the replacement), then "End SR 2002" and "Begin SR 0061" but its segment numbers aren't interrupted.
The PennDOT videolog (https://gis.penndot.gov/Videolog/) helps illustrate my point.
-In addition to the above examples, you'll also find the Little White Signs on ramps, in rest areas, runaway truck ramps, and others.
-Also, PA uses the standard mile markers commonly found on Interstates on some non-interstate freeways, such as US 222 in Lancaster County, US 22 in the Lehigh Valley, and US 422 between Pottstown and King of Prussia.
And then those use an entirely different segment scheme, where ramps easily reach into the 400s and 500s. I don't like it, and I wish PennDOT would be consistent but I'm not an employee. At least numbering is consistent (all ramps are 8000+).
May as well mention that PTC roads use standard mile markers. Don't know if bypasses get milemarkers (don't remember any in places like US 322's State College bypass).
There's a bit of inconsistency with PennDOT using mile markers on non-interstate freeways. I've mentioned some freeways that have them, but US 322 between Harrisburg and State College doesn't. US 219 has them, but US 22 between Altoona and Ebensburg does not. In the Pittsburgh area, US 22/30 west of PIT has them, but PA 28 does not.
I wrote a long, and I believe complete, description of the rather complicated system Texas uses. I quoted a map put up by someone else, which helps.
https://www.aaroads.com/forum/index.php?topic=9913.msg234614#msg234614 (https://www.aaroads.com/forum/index.php?topic=9913.msg234614#msg234614)
Quote from: wxfree on August 08, 2020, 09:22:41 PM
I wrote a long, and I believe complete, description of the rather complicated system Texas uses. I quoted a map put up by someone else, which helps.
https://www.aaroads.com/forum/index.php?topic=9913.msg234614#msg234614 (https://www.aaroads.com/forum/index.php?topic=9913.msg234614#msg234614)
It's not terribly complicated. Arcane for sure but not complicated.
Simply put, you take the longitude 10 miles west of Texas' westernmost point, and you take the latitude 10 miles north of Texas' northernmost reach (the panhandle border). Where those two lines intersect is the zero point. Everything east and south of that theoretical point is measured in miles from those lines.
Why they start at 10 and not zero, I have no clue.
In Kentucky, interstates and parkways use mile markers for the route's entire length, beginning at either the southern or western state line or route terminus.
All other routes, including those with freeway portions such as US 60, reset at county lines or the route's terminus, again starting in the south or west and increasing as you go east or north.
When Kentucky first started posting mile markers on surface routes, the signs were small ones with just the number in white on a green background. Modern iterations have "Mile" on the signs.
Quote from: csw on August 07, 2020, 08:09:53 PM
West Virginia resets mile markers at county lines - the mile markers are small white squares with the mile printed in black. (Somehow in 300+ photos from WV, I don't have a photo with one of these visible. Here's a GSV of a typical marker at a county line. (https://goo.gl/maps/AybvdYuA9WX4LPuu8)) The exception is ADHS roads (US 48, US 460, US 119, etc.), which have blue blades as mile markers.
And those little black-on-white signs are posted very haphazardly and inconsistently.
Quote from: csw on August 07, 2020, 08:09:53 PM
Virginia does not put mile markers along non-interstates.
Quote from: sprjus4 on August 07, 2020, 06:53:04 PM
Virginia rarely uses exit numbers on non-interstates, and when they exist, they're usually based on sequential order or mileage of that particular freeway segment (I.E. Exit 1, 2, etc.). One exception is VA-168 in South Hampton Roads which posts both mile-markers and uses mile-based exit numbers, starting at MM 0 at the North Carolina state line and ending at MM 15 at I-64. The three other non-interstate freeways in the region, VA-164, US-17, and US-58, do not have exit numbers.
There's one more exception besides 168. US 13 on the Eastern Shore has regular milemarkers with mileage measured from the NC line. IIRC, the first marker coming off the CBBT is MM 70.
Quote from: froggie on August 10, 2020, 05:38:00 PM
There's one more exception besides 168. US 13 on the Eastern Shore has regular milemarkers with mileage measured from the NC line. IIRC, the first marker coming off the CBBT is MM 70.
Since you're referring to mile-markers as opposed to exit numbers, US-17 also has mile-markers posted along the expressway portion in Hampton Roads between the North Carolina state line and Dominion Blvd (https://www.google.com/maps/@36.6388538,-76.3622186,3a,49.2y,23.01h,81.29t/data=!3m6!1e1!3m4!1sc8vlIRAf9iykUmdibrVFcg!2e0!7i13312!8i6656!5m1!1e1) from the 2005 relocation.
The US-29 Danville (https://www.google.com/maps/@36.5454682,-79.4221939,3a,41.7y,125.83h,81.99t/data=!3m6!1e1!3m4!1sTjXkwMAjPu-8TpwppLrvOg!2e0!7i16384!8i8192!5m1!1e1), Madison Heights (https://www.google.com/maps/@37.4069052,-79.084975,3a,40y,46.08h,89.36t/data=!3m6!1e1!3m4!1skSsGr8IZiO0ePwwRpsVolA!2e0!7i16384!8i8192!5m1!1e1) and Amherst (https://www.google.com/maps/@37.5780962,-79.0502214,3a,47.7y,223h,86.71t/data=!3m6!1e1!3m4!1sSLKN-4DhobC3Ht9KT6Qlkw!2e0!7i16384!8i8192!5m1!1e1) bypasses also has mile markers posted.
Quote from: sprjus4 on August 10, 2020, 06:38:30 PM
Quote from: froggie on August 10, 2020, 05:38:00 PM
There's one more exception besides 168. US 13 on the Eastern Shore has regular milemarkers with mileage measured from the NC line. IIRC, the first marker coming off the CBBT is MM 70.
Since you're referring to mile-markers as opposed to exit numbers, US-17 also has mile-markers posted along the expressway portion in Hampton Roads between the North Carolina state line and Dominion Blvd (https://www.google.com/maps/@36.6388538,-76.3622186,3a,49.2y,23.01h,81.29t/data=!3m6!1e1!3m4!1sc8vlIRAf9iykUmdibrVFcg!2e0!7i13312!8i6656!5m1!1e1) from the 2005 relocation.
The US-29 Danville (https://www.google.com/maps/@36.5454682,-79.4221939,3a,41.7y,125.83h,81.99t/data=!3m6!1e1!3m4!1sTjXkwMAjPu-8TpwppLrvOg!2e0!7i16384!8i8192!5m1!1e1), Madison Heights (https://www.google.com/maps/@37.4069052,-79.084975,3a,40y,46.08h,89.36t/data=!3m6!1e1!3m4!1skSsGr8IZiO0ePwwRpsVolA!2e0!7i16384!8i8192!5m1!1e1) and Amherst (https://www.google.com/maps/@37.5780962,-79.0502214,3a,47.7y,223h,86.71t/data=!3m6!1e1!3m4!1sSLKN-4DhobC3Ht9KT6Qlkw!2e0!7i16384!8i8192!5m1!1e1) bypasses also has mile markers posted.
As does VA 207-US 301 from Carmel Church to the Potomac River
CT puts them only on a select number of longer freeways, and as of now, they are only every mile, and many are missing, as the signage was placed 25-30 years ago, but never maintained. The only freeways currently are CT 2, CT 8, CT 9, and the parkway portion of CT 15. CT 8 does have some enhanced mile markers and 0.2 MM on sections where sign replacement projects have been completed. CT 9 is due to be re-signed (and converted to mileage based exits) in the next 2 years, and will most likely receive enhanced mile markers. A couple of shorter roads that have already been converted to mileage based exits (CT 2A, CT 349, SR 695) do not have mile markers, so I would be surprised if CTDOT adds mile markers to CT 72 when it is converted in a few months.
Quote from: KCRoadFan on August 07, 2020, 05:45:23 PM
Also, in New York State, they have so-called "reference markers" which measure tenths of a mile from the start of a "control segment" (basically a town line); they also have a code for the county you're in, as well as the order the county appears in along the route.
I wish NY would have just posted regular mile markers when they were developing this system. It's useless to motorists, though I understand they're used for internal documentation/records. Reference markers are posted on all NYSDOT roads and even some NYCDOT roads (Cross Island Parkway comes to mind). Thruway Authority doesn't use them.
Mile markers aren't posted in NYC and LI (for whatever reason). Mile markers are posted on parkways in the Hudson Valley. They are not used on non-interstate freeways. The only place I've ever seen mile markers on a non-freeway is US 9W near Storm King Mountain: https://goo.gl/maps/g7pWTw57eyR2nHG28 and I think because the local emergency services asked for them to better assist motorists stranded on the mountain in the winter.
Quote from: crispy93 on August 11, 2020, 12:03:02 PM
They are not used on non-interstate freeways.
Huh, I wonder what these are, then:
https://goo.gl/maps/enFiG1q9nsbyaUti8
https://goo.gl/maps/Q6CYsFpb66vQbPmg7
https://goo.gl/maps/WLfWKYnj51N4x4Bp6
https://goo.gl/maps/KcLURYAnqeU9EGiM9
Quote from: hbelkins on August 10, 2020, 12:41:39 PM
In Kentucky, interstates and parkways use mile markers for the route's entire length, beginning at either the southern or western state line or route terminus.
All other routes, including those with freeway portions such as US 60, reset at county lines or the route's terminus, again starting in the south or west and increasing as you go east or north.
When Kentucky first started posting mile markers on surface routes, the signs were small ones with just the number in white on a green background. Modern iterations have "Mile" on the signs.
Quote from: csw on August 07, 2020, 08:09:53 PM
West Virginia resets mile markers at county lines - the mile markers are small white squares with the mile printed in black. (Somehow in 300+ photos from WV, I don't have a photo with one of these visible. Here's a GSV of a typical marker at a county line. (https://goo.gl/maps/AybvdYuA9WX4LPuu8)) The exception is ADHS roads (US 48, US 460, US 119, etc.), which have blue blades as mile markers.
And those little black-on-white signs are posted very haphazardly and inconsistently.
It took me the better part of 3 years to make the connection between this and the exit numbers on US-41 in Henderson. I used to think it was supposed to be sequential based exit numbers but eventually came to grips with the county line mileage.
Quote from: froggie on August 10, 2020, 05:38:00 PM
Quote from: csw on August 07, 2020, 08:09:53 PM
Virginia does not put mile markers along non-interstates.
Quote from: sprjus4 on August 07, 2020, 06:53:04 PM
Virginia rarely uses exit numbers on non-interstates, and when they exist, they're usually based on sequential order or mileage of that particular freeway segment (I.E. Exit 1, 2, etc.). One exception is VA-168 in South Hampton Roads which posts both mile-markers and uses mile-based exit numbers, starting at MM 0 at the North Carolina state line and ending at MM 15 at I-64. The three other non-interstate freeways in the region, VA-164, US-17, and US-58, do not have exit numbers.
There's one more exception besides 168. US 13 on the Eastern Shore has regular milemarkers with mileage measured from the NC line. IIRC, the first marker coming off the CBBT is MM 70.
US 23 has mile markers along most its length in Virginia. They run out somewhere near the school on the bypass of Pound, and don't extend all the way to the Kentucky state line.
Quote from: crispy93 on August 11, 2020, 12:03:02 PM
Quote from: KCRoadFan on August 07, 2020, 05:45:23 PM
Also, in New York State, they have so-called "reference markers" which measure tenths of a mile from the start of a "control segment" (basically a town line); they also have a code for the county you're in, as well as the order the county appears in along the route.
I wish NY would have just posted regular mile markers when they were developing this system. It's useless to motorists, though I understand they're used for internal documentation/records. Reference markers are posted on all NYSDOT roads and even some NYCDOT roads (Cross Island Parkway comes to mind). Thruway Authority doesn't use them.
Mile markers aren't posted in NYC and LI (for whatever reason). Mile markers are posted on parkways in the Hudson Valley. They are not used on non-interstate freeways. The only place I've ever seen mile markers on a non-freeway is US 9W near Storm King Mountain: https://goo.gl/maps/g7pWTw57eyR2nHG28 and I think because the local emergency services asked for them to better assist motorists stranded on the mountain in the winter.
I was just about come say what you did, Region 10 has no mile markers on any roadway, DOT only has the tiny green reference markers on state maintained roads. We don't even use them half the time because they're usually old, damaged and faded, lost in the brush, or missing. As you mentioned, they make no sense to general public and mainly for internal record keeping/ police reports, providing exact limits for capital projects,Etc.
Here is link from NYS government reference marker manual explaining what the purpose is and what each position of the 12 digits represent.
https://www.dot.ny.gov/divisions/engineering/design/dqab/dqab-repository/RefMarkerManual.PDF (https://www.dot.ny.gov/divisions/engineering/design/dqab/dqab-repository/RefMarkerManual.PDF)
Here's an example near me on I-495 in Yaphank NY (Suffolk Co)
https://goo.gl/maps/Gb97od65GpQ9keCU7 (https://goo.gl/maps/Gb97od65GpQ9keCU7)
* bonus: there's a culvert identification number plate on same sign post, CIN plates are very hard to find as general public isn't aware of their locations*
495I
0704
1277
This says it's Interstate 495, DOT region 10 (10=O, 11=N), Suffolk County (Suffolk is County # 7 in alphabet sequence of the 7 counties in region 10 & 11), route has transverse 4 counties from its western/ southern terminus - in this case I-495 passed through New York, queens, Nassau and Suffolk counties), route has t passed through any cities - 1 represent crossed into Suffolk, and marker 27.7 miles from Suffolk western border.
Signs get confusing in nyc where X is added on the signs, and parkways and other unsigned touring routes like parkways use internal reference route numbers like 908M for southern state parkway or 27A for montauk hwy in shinnecock which is now unsigned 900w (former routing of 27a) or 904 for glen cove rd which is former 904, now unsigned 900B)
Quote from: vdeane on August 11, 2020, 01:04:26 PM
Quote from: crispy93 on August 11, 2020, 12:03:02 PM
They are not used on non-interstate freeways.
Huh, I wonder what these are, then:
https://goo.gl/maps/enFiG1q9nsbyaUti8
https://goo.gl/maps/Q6CYsFpb66vQbPmg7
https://goo.gl/maps/WLfWKYnj51N4x4Bp6
https://goo.gl/maps/KcLURYAnqeU9EGiM9
An oddity! Which all of nys sould adopt it, I don't see regions 10 or 11 ever doing so. I say counties should make major roads as well such as Suffolk county roads 39/39A, 46, 48, 50, 80, 85, 97.
Quote from: tdindy88 on August 07, 2020, 06:56:43 PM
Indiana has a small blue reference marker on its state highways that can serve as a mile marker sign, though I don't think I see them everywhere on the highways. They are more used for bridges and such. Still, I will pass by signs that just have the mile on it with nothing to reference nearby. The mile markers are set from the state line to the west or south or wherever the highway starts.
The only regular looking mile markers on non-interstates are along the freeway portions of US 31 in Hamilton County, Kokomo and from Plymouth to South Bend and along Evansville roadways (US 41, SR 62, SR 66.)
The small blue mile marker signs are on every state and US highway that isn't a freeway using the regular green ones. There might be an individual marker or two missing here or there, but I've never been on a highway that didn't have them.
For discontinuous routes, the mileage continues picks up where it left off and doesn't reset to zero.
All bridges have a pair of markers, the first being the whole number of miles and the second being hundredths of miles.
Quote from: noelbotevera on August 08, 2020, 05:24:43 PM
Quote from: Crown Victoria on August 08, 2020, 05:06:32 AM
Quote from: noelbotevera on August 08, 2020, 12:46:25 AM
Pennsylvania's county system on state routes and US routes is odd. Every half mile the squares - PennDOT calls them segments - increment by 10, so there's 20 segments in a mile. Interstates use a different rule (I believe 1 segment = 0.1 miles). I think realignments and one-way sections change these segments, which is why some segments are non-zero (i.e. you'll see numbers like 83 instead of 80, reflecting a routing change of some kind). Multiplexes take into account the dominate route, usually that of higher rank or lower number (ex. PA 44's multiplex with PA 144 uses 44's segments, but its multiplex with US 220 uses 220's segments). Finally, there are no county routes in PA. PA has a massive list of state routes numbered from 1000+ and these also get white markers; the most common are state routes in the 2000's and 3000's. In special cases, like PA 61's abandoned Centralia segment, PennDOT seems to resign the route onto the unsigned SR; so you'll see signs saying "End SR 0061" and "Begin SR 2002" (the replacement), then "End SR 2002" and "Begin SR 0061" but its segment numbers aren't interrupted.
The PennDOT videolog (https://gis.penndot.gov/Videolog/) helps illustrate my point.
-In addition to the above examples, you'll also find the Little White Signs on ramps, in rest areas, runaway truck ramps, and others.
-Also, PA uses the standard mile markers commonly found on Interstates on some non-interstate freeways, such as US 222 in Lancaster County, US 22 in the Lehigh Valley, and US 422 between Pottstown and King of Prussia.
And then those use an entirely different segment scheme, where ramps easily reach into the 400s and 500s. I don't like it, and I wish PennDOT would be consistent but I'm not an employee. At least numbering is consistent (all ramps are 8000+).
May as well mention that PTC roads use standard mile markers. Don't know if bypasses get milemarkers (don't remember any in places like US 322's State College bypass).
The PA LWS aren't mile markers at all, because 10 does not exactly equal one-half mile. It is more of an inventory marking sIt is approximately one-half mile, but each segment is determined by picking something physical to identify the end of a segment (a driveway, a culvert, an intersecting road, etc).
https://www.penndot.gov/ProjectAndPrograms/ResearchandTesting/RoadwayManagementandTesting/Pages/Location-Reference-System.aspx (https://www.penndot.gov/ProjectAndPrograms/ResearchandTesting/RoadwayManagementandTesting/Pages/Location-Reference-System.aspx)
Quote from: Crown Victoria on August 08, 2020, 08:49:20 PM
There's a bit of inconsistency with PennDOT using mile markers on non-interstate freeways. I've mentioned some freeways that have them, but US 322 between Harrisburg and State College doesn't. US 219 has them, but US 22 between Altoona and Ebensburg does not. In the Pittsburgh area, US 22/30 west of PIT has them, but PA 28 does not.
The freeway sections of PA-28 have mile markers. They're very simple - just "whole" miles and no shields on them.
Other than that, even the interstates are kind of inconsistent these days on the kinds of mile markers (probably depending on PennDOT district) - here in the PGH area the interstate freeways (at least the parkways) now have MM's with small I-Shields on them either every tenth or every two tenths of a mile.
I believe the PA Turnpike (and probably it's expansion roads at this point) has MM's with interstate shields on the whole-mile markers (and have 2 of them per direction, one in (on) the median, and one on the shoulder, then the tenths have a MM without a shield on the shoulder (at least most of the time). I think I-79, at least in Butler County, follows the same paradigm (without one in the median).
Also in some cases Illinois marks the intersections not every mile. Also the expressway by pass of Biggsville used the Interstate markers.
IDOT installs mile marker signs for state routes. However, they have the county name on them and the mileage is based on the length or width of the county, depending on which direction the route runs. The mileage resets every county.
Quote from: Mccojm on August 11, 2020, 01:36:49 PM
Quote from: vdeane on August 11, 2020, 01:04:26 PM
Quote from: crispy93 on August 11, 2020, 12:03:02 PM
They are not used on non-interstate freeways.
Huh, I wonder what these are, then:
https://goo.gl/maps/enFiG1q9nsbyaUti8
https://goo.gl/maps/Q6CYsFpb66vQbPmg7
https://goo.gl/maps/WLfWKYnj51N4x4Bp6
https://goo.gl/maps/KcLURYAnqeU9EGiM9
An oddity! Which all of nys sould adopt it, I don't see regions 10 or 11 ever doing so. I say counties should make major roads as well such as Suffolk county roads 39/39A, 46, 48, 50, 80, 85, 97.
Given that Regions 10 and 11 don't use milemarkers at all, I'm not sure how that're representative of how the state handles non-interstate, non-parkway freeways.