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Poll

Which enhanced mile marker color do you prefer?

Green (most used color)
- 40 (63.5%)
Blue (used by IN, KS, KY, OH, TN and WI)
- 20 (31.7%)
White (used by CA and NV)
- 3 (4.8%)

Total Members Voted: 63


Author Topic: Enhanced Mile Markers  (Read 25512 times)

SkyPesos

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Enhanced Mile Markers
« on: December 14, 2020, 08:02:18 PM »

After driving through various states, I see that are different variations of the enhanced mile marker, which are mile markers with route number, direction and fractions of a mile. Because I’m currently bored, thought it would be fun to make a google spreadsheet with the features on enhanced mile markers in various states.
EDIT: This thread is enough and better for including detals than the google sheet.
EDIT 2: I'll use this as the general thread for enhanced mile markers discussion and news on the forum now.

If you can, list the following qualities of enhanced mile markers below of state(s) you know about:

Interstates only or all freeways:
Urban areas only or throughout the state:
Color (normally green or blue):
Interval (most common I see are 0.1 and 0.2):
.0 on whole miles (Yes or No):
Placement in median or right shoulder:
Any more info to add:

I’ll start with the 2 states I lived in; Ohio and Missouri

Ohio
Interstates only or all freeways: all freeways
Urban areas only or throughout the state: urban areas only, switches to MUTCD green whole mile markers in rural areas
Color: blue
Interval: 0.2, except 0.1 in Cincinnati
.0 on whole miles: yes
Placement in median or right shoulder: median, though I found one-offs on the right shoulder
Notes: Old design; uses abbreviated direction, no "MILE" word, no decimal point
Standard new design, wider than above, with full direction name, "MILE" word and decimal point
However, Ohio is inconsistent with the new design in some areas. For example, this one uses an abbreviated direction and no decimal point
This one has the full direction name, but no decimal point
This one lacks a .0 on a whole mile

Missouri
Interstates only or all freeways: Interstates only
Urban areas only or throughout the state: throughout the state
Color: green
Interval: 0.2
.0 on whole miles: yes
Placement in median or right shoulder: mostly right shoulder, though there are median placed ones on I-64

If there’s any category worth adding, let me know
« Last Edit: March 20, 2021, 09:21:11 PM by SkyPesos »
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Ben114

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Re: Enhanced Mile Markers
« Reply #1 on: December 14, 2020, 08:45:34 PM »

Massachusetts

Interstates only or all freeways: all freeways
Urban areas only or throughout the state: throughout the state
Color (normally green or blue): green
Interval (most common I see are 0.1 and 0.2): 0.2
.0 on whole miles (Yes or No): No
Placement in median or right shoulder: Right shoulder on all except for I-90, where they are in the median
Any more info to add: Route shield and direction only added on full miles, not other ones
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Re: Enhanced Mile Markers
« Reply #2 on: December 14, 2020, 08:53:02 PM »

Massachusetts

Interstates only or all freeways: all freeways
Urban areas only or throughout the state: throughout the state
Color (normally green or blue): green
Interval (most common I see are 0.1 and 0.2): 0.2
.0 on whole miles (Yes or No): No
Placement in median or right shoulder: Right shoulder on all except for I-90, where they are in the median
Any more info to add: Route shield and direction only added on full miles, not other ones

They're also on some surface roads, although this isn't consistent.

The other thing to note is that they aren't always accurate. Τhe ones on MA 110 are about 2 miles higher than they should be, and there's an old 42.5 between new 42.2 and 42.4 northbound on I-93. Bridge markers that show milage to three decimal places are always accurate, though.
« Last Edit: December 14, 2020, 08:58:09 PM by 1 »
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Clinched, minus I-93 (I'm missing a few miles and my file is incorrect)

Traveled, plus US 13, 44, and 50, and several state routes

I will be in Burlington VT for the eclipse.

SkyPesos

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Re: Enhanced Mile Markers
« Reply #3 on: December 14, 2020, 11:10:21 PM »

Going to add Indiana and Kentucky mile markers in here as well:

Indiana
Interstates only or all freeways: All freeways, or at least US 31 north of Indianapolis has them, if it's actually interstates only
Urban areas only or throughout the state: Urban areas only, rural areas use standard green MUTCD mile markers in intervals of 0.5
Color (normally green or blue): Blue
Interval (most common I see are 0.1 and 0.2): 0.1 in Indianapolis and Northwest Indiana, 0.2 in Ft Wayne
.0 on whole miles (Yes or No): Yes
Placement in median or right shoulder: Median
Any more info to add: Typical enhanced mile marker design. They're pretty consistent in urban areas around the state.

Kentucky
Interstates only or all freeways: Interstates only
Urban areas only or throughout the state: Urban areas only
Color (normally green or blue): Blue
Interval (most common I see are 0.1 and 0.2): 0.2 in Louisville and Lexington, 0.1 in Northern KY (Cincinnati Metro)
.0 on whole miles (Yes or No): Yes
Placement in median or right shoulder: Median, with right shoulder ones on I-64 in Louisville
Any more info to add: Has an old design and new design, with the same details as Ohio's mile markers in each.
« Last Edit: December 23, 2020, 11:33:24 PM by SkyPesos »
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Re: Enhanced Mile Markers
« Reply #4 on: December 15, 2020, 12:47:56 AM »

Pennsylvania...whew, this one's a doozy

Interstates only or all freeways: Most freeways1
Urban areas only or throughout the state: Throughout the state1
Color (normally green or blue): Green
Interval (most common I see are 0.1 and 0.2): 0.12
.0 on whole miles (Yes or No): Yes3
Placement in median or right shoulder: Right shoulder4
Any more info to add:
1. PA is very inconsistent with milemarkers. No surface routes have milemarkers. Some freeways, like US 322, don't have milemarkers despite its freeway being 65 miles long (except for 2 miles near Harrisburg). But, PA 283 - only 28 miles, gets milemarkers for its whole length. US 22 gets milemarkers on its eastern freeway section (I-78 to NJ), though this is more justified as it's an important freeway in the area.
2. Some routes only get 0.2 milemarkers, like US 222. Interstates always have 0.1 intervals.
3. Instead of a .0 enhanced marker, sometimes you'll get an older-style MILE XX instead.
4. Depends on road. PA Turnpike (I-76) has them on the median, so does I-78 and I-476/NE Extension. But the Schuylkill Expressway (also I-76) has them on the right (using 0/10, 1/10, 2/10, etc.). Some newer milemarkers are placed on the median. Again, PennDOT is inconsistent.
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TheHighwayMan394

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Re: Enhanced Mile Markers
« Reply #5 on: December 15, 2020, 02:37:34 AM »

Minnesota

All freeways
Urban areas only
Green
.1
Yes
Both

Wisconsin

All freeways
Throughout the state
Blue
.2
Yes
Median
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Re: Enhanced Mile Markers
« Reply #6 on: December 15, 2020, 10:39:38 PM »

Missouri
Interstates only or all freeways: Interstates only
Urban areas only or throughout the state: throughout the state
Color: green
Interval: 0.2
.0 on whole miles: yes
Placement in median or right shoulder: mostly right shoulder, though there are median placed ones on I-64

Not quite correct.  The MO 21 freeway in Jefferson County has them.  US 65 also has them from some point north of Springfield down to the Arkansas border, including the non-freeway segments.

MO 364 may still have the older style blue ones once also used on interstates around St. Louis.

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SkyPesos

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Re: Enhanced Mile Markers
« Reply #7 on: December 15, 2020, 11:04:03 PM »

MO 364 may still have the older style blue ones once also used on interstates around St. Louis.
Oh yea those quarter mile markers... Think those are St. Louis county only, because I recall them disappearing after you cross the Missouri river bridge WB. Idk how I missed that considering I used to go on 364 twice a week.

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Re: Enhanced Mile Markers
« Reply #8 on: December 15, 2020, 11:08:52 PM »

That "point north of Springfield" would be Buffalo, where the four lane expressway ends at MM 82.

The US 54 freeway in Osage Beach has some, but the section with mile markers is so short, it's not worth including.
« Last Edit: December 16, 2020, 08:24:10 PM by ozarkman417 »
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Brandon

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Re: Enhanced Mile Markers
« Reply #9 on: December 16, 2020, 08:03:57 AM »

Illinois

The entire Tollway System (albeit at every quarter mile).
Bloomington-Normal
Metro East

Interestingly, Chicagoland does not have them except on the tollways.  There are mile markers at various intervals on light posts, but they are not enhanced.
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Re: Enhanced Mile Markers
« Reply #10 on: December 16, 2020, 08:20:09 PM »

Not too sure on all the details, but here's a rough guess for Texas:

Interstates only
Throughout the state
Green
I don't think Texas has intervals smaller than 1 mile, but I may be wrong.
No .0 on whole miles
Right shoulder
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SkyPesos

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Re: Enhanced Mile Markers
« Reply #11 on: December 16, 2020, 10:50:31 PM »

Not too sure on all the details, but here's a rough guess for Texas:

Interstates only
Throughout the state
Green
I don't think Texas has intervals smaller than 1 mile, but I may be wrong.
No .0 on whole miles
Right shoulder
Does the mile markers have a route shield and cardinal direction in addition to the mile number, or just the world "Mile" and a number stacked vertically? If it's the latter, that's the standard MUTCD mile markers.

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Re: Enhanced Mile Markers
« Reply #12 on: December 17, 2020, 12:23:53 AM »

Not too sure on all the details, but here's a rough guess for Texas:

Interstates only
Throughout the state
Green
I don't think Texas has intervals smaller than 1 mile, but I may be wrong.
No .0 on whole miles
Right shoulder
Does the mile markers have a route shield and cardinal direction in addition to the mile number, or just the world "Mile" and a number stacked vertically? If it's the latter, that's the standard MUTCD mile markers.
Nope, it's just the MUTCD now that I think about it.
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jp the roadgeek

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Re: Enhanced Mile Markers
« Reply #13 on: December 17, 2020, 11:38:53 PM »

CT usually does it with re-signing/exit renumbering projects.  Highways that I’m aware that have them:

I-84: NY border to Rochambeau Bridge (extent of Fairfield County), MP 42-MP 56
I-91: Entire length (done independently of signing projects)
I-95: NY Border to about MP 52, and from Groton - RI border
I-395: Entire length
CT 8: I-95 to 8/25 split, portions between CT 15 and Naugatuck, and north of Waterbury
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Re: Enhanced Mile Markers
« Reply #14 on: December 18, 2020, 01:06:58 PM »

Nevada

Nevada has just started using the MUTCD Enhanced Reference Location Signs about 6 years ago. They are not widespread, but are being deployed with new construction or reconstruction/maintenance projects

Interstates only or all freeways: Interstates only (although Clark County 215 also uses them, but that's a future interstate)
Urban areas only or throughout the state: Throughout the state (to my knowledge, but thus far have seen them in primarily urban or higher-trafficked corridors)
Color (normally green or blue): Green
Interval (most common I see are 0.1 and 0.2): integer miles
.0 on whole miles (Yes or No): No
Placement in median or right shoulder: Right shoulder typically (although I-580's mile 1 is in the median for some reason)


Nevada is like California where route mileage resets at county lines on all state and US highways, although NDOT still calls them a milepost (instead of Caltrans' "postmile" nomenclature). Around the same timeframe, NDOT has begun using what they call "Enhanced Mileposts" along state/US highway projects. Info:

Interstates only or all freeways: State and US highways, from multi-lane divided to two-lane
Urban areas only or throughout the state: Rural areas only
Color (normally green or blue): white
Interval (most common I see are 0.1 and 0.2): integer miles
.0 on whole miles (Yes or No): no
Placement in median or right shoulder: Right shoulder on divided highways. Two-lane highways employ a back-to-back mounting posted on the right shoulder of the direction of increasing mileage
Any more info to add: Route shield is shown with no cardinal direction. Also the two-letter county code is listed, and the mile number is turned sideways (not unlike the standard NDOT milepost). More info and examples in this thread on the Pacific Southwest board.
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Re: Enhanced Mile Markers
« Reply #15 on: December 20, 2020, 02:16:34 PM »

Minnesota

All freeways
Urban areas only
Green
.1
Yes
Both
It's still kinda spotty though.  MN-62, US-169, US-212 for example do not yet have any enhanced MMs, despite the MMs first appearances on sections of I-35W and I-94 about 15 years ago.
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Re: Enhanced Mile Markers
« Reply #16 on: December 22, 2020, 07:54:54 PM »

Oregon

Interstates only or all freeways: Only on OR-217
Urban areas only or throughout the state: Urban/suburban
Color (normally green or blue): Green
Interval (most common I see are 0.1 and 0.2): 0.5
.0 on whole miles (Yes or No): Yes
Placement in median or right shoulder: Right shoulder
Any more info to add: These mileposts were installed along the 7-mile OR-217 in the summer of 2011, replacing standard mileposts. ODOT decided to test the new format after lobbying by groups like Tualatin Valley Fire & Rescue in an attempt to cut down the amount of time they respond to emergency situations. Don Hamilton of ODOT mentioned in an August 3, 2011 OregonLive article "The faster the response to an incident, the faster the incident is cleared and traffic is moving again." The same article noted that the installation of the new mile markers cost $38,000, and that a second project to install half-mileposts (with no other enhanced route information) was being done on US-26 east of Portland, from Sandy to Government Camp.

Since the original ODOT "test" is now almost 10 years old, I imagine ODOT and TVF&R didn't see too much of a benefit to extend the enhanced mile markers along other freeways. At least in the Portland/Salem/Hood River area, there have been no other enhanced mile markers deployed on area freeways (OR-217's are still in place). New highways, like the Newberg-Dundee Bypass, Sunrise Expressway and Rogue Valley Expressway all use standard mile markers at mile intervals. However, ODOT apparently has found some benefit in adding the unenhanced half-mile markers to some of the more accident-prone highways in the state. I have seen them on recent trips along I-84 east of Troutdale, and they remain along the original test segment of US-26; they are also currently on Cornelius Pass Road, which is slated to become OR-127 in the near future.

There do appear to be similarly styled enhanced mile markers on US-20 over Santiam Pass, which isn't a freeway. I don't know a lot about these, but at first glance they placed randomly at whole miles with standard mile markers in between. Examples: MP 75, MP 80, MP 83.
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Re: Enhanced Mile Markers
« Reply #17 on: December 22, 2020, 08:08:54 PM »

Utah uses enhanced mile markers only in complex system interchanges where an interstate mainline moves to a different freeway. This only occurs on I-80 at its two interchanges with I-15 in Salt Lake City.

They are green and appear on the right side at intervals of 0.1 miles.

SkyPesos

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Re: Enhanced Mile Markers
« Reply #18 on: December 22, 2020, 10:21:14 PM »

Oregon

Interstates only or all freeways: Only on OR-217
Urban areas only or throughout the state: Urban/suburban
Color (normally green or blue): Green
Interval (most common I see are 0.1 and 0.2): 0.5
.0 on whole miles (Yes or No): Yes
Placement in median or right shoulder: Right shoulder
Any more info to add: These mileposts were installed along the 7-mile OR-217 in the summer of 2011, replacing standard mileposts. ODOT decided to test the new format after lobbying by groups like Tualatin Valley Fire & Rescue in an attempt to cut down the amount of time they respond to emergency situations. Don Hamilton of ODOT mentioned in an August 3, 2011 OregonLive article "The faster the response to an incident, the faster the incident is cleared and traffic is moving again." The same article noted that the installation of the new mile markers cost $38,000, and that a second project to install half-mileposts (with no other enhanced route information) was being done on US-26 east of Portland, from Sandy to Government Camp.

Since the original ODOT "test" is now almost 10 years old, I imagine ODOT and TVF&R didn't see too much of a benefit to extend the enhanced mile markers along other freeways. At least in the Portland/Salem/Hood River area, there have been no other enhanced mile markers deployed on area freeways (OR-217's are still in place). New highways, like the Newberg-Dundee Bypass, Sunrise Expressway and Rogue Valley Expressway all use standard mile markers at mile intervals. However, ODOT apparently has found some benefit in adding the unenhanced half-mile markers to some of the more accident-prone highways in the state. I have seen them on recent trips along I-84 east of Troutdale, and they remain along the original test segment of US-26; they are also currently on Cornelius Pass Road, which is slated to become OR-127 in the near future.

There do appear to be similarly styled enhanced mile markers on US-20 over Santiam Pass, which isn't a freeway. I don't know a lot about these, but at first glance they placed randomly at whole miles with standard mile markers in between. Examples: MP 75, MP 80, MP 83.
Think this goes along with my guess that enhanced mile markers are far less common in states west of the Mississippi than the states east. I went onto GSV for a couple of minutes the other day, can't find any in large cities in Texas, California, Arizona or Washington (although I made a custom blue one of a median placed WA-520 that actually looked good). I can't even find standard mile markers subdivided into intervals less than 1 mile in those states. I've seen an enhanced mile marker used to provide location to a 911 dispatcher before, but otherwise, they're nice to haves.

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Re: Enhanced Mile Markers
« Reply #19 on: December 23, 2020, 07:53:53 PM »

I like mile markers with boobs! :)
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Re: Enhanced Mile Markers
« Reply #20 on: December 23, 2020, 08:22:16 PM »

Oklahoma
Interstates only or all freeways: Currently only I-35 south of Norman
Urban areas only or throughout the state: Throughout
Color (normally green or blue): Green
Interval (most common I see are 0.1 and 0.2): 0.5
.0 on whole miles (Yes or No): No
Placement in median or right shoulder: Right shoulder
Any more info to add: Pilot program; ODOT expects to roll them out to more areas later

I like mile markers with boobs! :)

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SkyPesos

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Re: Enhanced Mile Markers
« Reply #21 on: December 23, 2020, 10:41:11 PM »

Oklahoma
Interstates only or all freeways: Currently only I-35 south of Norman
Urban areas only or throughout the state: Throughout
Color (normally green or blue): Green
Interval (most common I see are 0.1 and 0.2): 0.5
.0 on whole miles (Yes or No): No
Placement in median or right shoulder: Right shoulder
Any more info to add: Pilot program; ODOT expects to roll them out to more areas later
Interesting to see that Oklahoma uses state named interstate shields on mile markers, from the couple I saw on GSV. Thought mile markers are already tiny enough that neutered shields are pretty much necessary. At least it's not a 3di shield, because Ohio made that mistake once here

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Re: Enhanced Mile Markers
« Reply #22 on: December 24, 2020, 08:06:56 AM »

I like mile markers with boobs! :)

How do you know they're enhanced that way?  Just remember to take your milemarker enhancement pills.
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Re: Enhanced Mile Markers
« Reply #23 on: December 25, 2020, 09:54:32 PM »

I like mile markers with boobs! :)

How do you know they're enhanced that way?  Just remember to take your milemarker enhancement pills.
I gave them the touch and taste test!
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Re: Enhanced Mile Markers
« Reply #24 on: December 25, 2020, 11:00:57 PM »

North Carolina is pretty inconsistent, but new construction projects are becoming more consistent.

All freeways
Urban areas only
Green
I have seen both .1 and .5 interval, never .2
no .0 for whole numbers that i have seen
usually right shoulder

there is one stretch of freeway on US 74 east of downtown Charlotte thats unique. it has the route number as “US-74”  with the direction underneath, and its every .1 interval. However, there is a two-lane bus lane in the median, and the mile markers are posted on the eastbound side of the bus lane, so it is very difficult to see the mile markers from the westbound lanes. Also im pretty sure one of these is mounted backwards, so the eastbound side sees a west direction banner and visa-versa.
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