I once remember US 258 in Hampton, VA having letter exit numbers for all of its intersections. Northbound would have double letters like "AA" and "BB" etc. Southbound toward the James River would be single letters all using the 26 letters of the alphabet. I do not know if still exists to this day.
I know the Brigantine Connector in Atlantic City, NJ uses letters only.
Then in Orlando, FL 436 has exit numbers for FL 528 even though it is not freeway and the fact there are no other exit numbers along FL 436.
Two exits on OH 2 near Lorain had exit numbers while no others did; Exits 7 (http://g.co/maps/h4s9x) and 10 (http://g.co/maps/s6bz8) based on the county-based mileposts of the route. Now more exits on the route are being numbered based on the overall mileage (http://g.co/maps/e5e74) from the Indiana line, so those oddball exit numbers will have to eventually go if they do number everything. (That will probably not happen for quite a while.) As it stands, Exit 10 is 40 miles east of Exit 125!
The end of both I-474 and IL-6 at I-74 on the west side of Peoria, IL uses Exit A and Exit B instead of 1 or 0 as both I-474 and IL-6 start at that interchange.
Quote from: roadman65 on April 16, 2012, 06:44:08 PM
I once remember US 258 in Hampton, VA having letter exit numbers for all of its intersections. Northbound would have double letters like "AA" and "BB" etc. Southbound toward the James River would be single letters all using the 26 letters of the alphabet. I do not know if still exists to this day.
I was on that road a couple of weeks ago and I did not see any letters on it. I went on the part from the JRB to I-64.
I-244 used to start its exit numbering from the mile marker where it branched off of I-44, not at zero, and in turn I-444 started its numbering from where it branched off of I-244. When I-44 was extended, I-244's numbering was adjusted to be more normal, but since I-444 just had suffixes of 94 and 96, they just pulled off the numbers and left the suffixes. However there was one sign where this was not possible, so it was left as-is, leaving I-444's first four exits as "A", "B", "C", and "94D". Even after they replaced most of the button copy signs with new ones (with no exit numbers at all) the 94D sign stayed up for a while, leading to just one numbered exit, 94D, in a string of unnumbered exits.
Park Ave. has A-B exits in State College, PA. This also happens at US 22/219 in Ebensburg (I think) and US 422/219 in Indiana. No other lettered or numbered exits on any of those highways. (Park Ave. is by the I-99/US 322 junction). I-76 Exit 354 is the first exit in New Jersey. Same state, I-195 Exit 60 is the westernmost exit on the freeway.
Quote from: HighwayMaster on April 16, 2012, 08:02:14 PM
Quote from: roadman65 on April 16, 2012, 06:44:08 PM
I once remember US 258 in Hampton, VA having letter exit numbers for all of its intersections. Northbound would have double letters like "AA" and "BB" etc. Southbound toward the James River would be single letters all using the 26 letters of the alphabet. I do not know if still exists to this day.
I was on that road a couple of weeks ago and I did not see any letters on it. I went on the part from the JRB to I-64.
It doesn't exist today; all the interchanges along US 258 in Hampton and Newport News use green signs identifying the street, with trailblazers for numbered routes. There's no mention of it on the Virginia Highways Project page about US 258 and I don't know the area enough to know whether it ever existed.
The US 98 'bypass' around Panama City Beach has major intersections signed with exit letters. Two photos from aaroads:
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fwww.southeastroads.com%2Fflorida090%2Fus-098_wb_at_cr-030h.jpg&hash=0557d84140d4a2180c4ed4e0441ed85b50cb0bc0)
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fwww.southeastroads.com%2Fflorida090%2Fus-098_wb_at_wisteria_ln.jpg&hash=b3fee1d31a881d946454ed9836bb23275aacb7c6)
US 23 having exit 23 at I-270 on the northside of Worthington.
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fwww.roadfan.com%2Fexittabs.jpg&hash=6e5829d23c56a453f8cad98f657f5f9b08ae7fde)
And yes the button copy Indianapolis sign is still there...in both directions on US 23.
NY 17. Before PA switched to distance-based numbers, it went 1 (at I-90), 2, 4, 6, 7, etc. with still more gaps at exit 22, 55, etc. Some at-grades have numbers (Hale Eddy is hidden 85 and 86, Parksville was 98, Horseheads was collectively 53, etc.) while others did not (such as Newton Battlefield). It's as if the DOT had no clue what the freeway was going to look like when the numbers were installed.
The Pennsylvania Turnpike has an unusual exit numbering sequence WB in the Philly area
351
343
340
339
20
333
326
The oddball is the milepost on I-476 of the Mid-County toll plaza; otherwise there would be two different exit numbers for that plaza.
It is only signed as Exit 20 on the mainline in three places in the sequence.
A/AP-7 in Spain. This one really takes the cake.
Texas Toll 130 and its exit numbers in the 400s (https://www.aaroads.com/forum/index.php?topic=1335.0).
There may still be some strange high numbers on US 59 north of Houston.
How about California Route 65 in Roseville, CA? The first exit north of I-80 is numbered 307. That would be odd unless the driver knew Route 65 begins just north of Bakersfield, CA and has a major gap (approx 230 miles) in it.
Also the western-most exit on I-380 is exit 5 because there a slim, slim, SLIM chance of I-380 being extended east WEST to CA-1.
Edit: Dumb... so dumb... :banghead: :banghead: :banghead: ...and thanks for pointing that out "National Highway 1" :D
Quote from: myosh_tino on April 17, 2012, 11:56:04 PM
Also the western-most exit on I-380 is exit 5 because there a slim, slim, SLIM chance of I-380 being extended east to CA-1.
Actually, I-380 could be extended WEST to CA 1.
I-17's exit numbers begin at 194 due to a branching exit number system from when it was AZ 69, which branched off the then US 89.
Quote from: Bickendan on April 17, 2012, 08:47:32 PMA/AP-7 in Spain. This one really takes the cake.
As I have said before, it's only weird if you don't see the state boundaries and the fact that it's two different freeways with different zero points. That the distance-based numbers don't reset at state lines is unusual though - but of course pretty logical from a navigation standpoint, unlike the states.
I've never liked the French exits 15.1, etc. They deliberately use 1500m on signs, rather than 1,5km to avoid using the little comma, then use .1, .2 instead of A, B suffixes for later additions in the sequential numbering, with the periods - smaller character than commas. The French also use a branching system some of the time, and not at other times.
The Northern Irish M1 - while there are not a small number of missing junctions numbers in the British Isles where planned junctions weren't built* and unbuilt sections mean you start at 4 or 7** - used to go 1, 2, 3, gap, 6, 7, gap, 9, 10, 11, 12, 13, 14, 15. A different junction 8 has since been built, but the gap between 3 and 6 is still there.***
*GB: M1 3, M4 31 M27 6, M55 2, M56 13, M58 2, M61 8. NI: M1 4, M1 5, M2 3. RoI: M6 18 (u/c), M7 20, M8 2
**Missing junction numbers are: GB M8 7 (soon-to-be upgraded section of A8 has 3 junctions for this one gap), M11 1-3, M23 1-6, M25 1 (A282 has the junctions, numbered 1A and 1B), M62 1-3, A1(M) 11-13, A1(M) 18-33, A1(M) 39, A1(M) 52-55 (only 2 junction for these numbers). NI M2 8-9. RoI other than M/N11 the gaps in Mx are filled by Nx and there's no actual numbering gaps.
***Other places where this has happened are: GB M62 J8. NI M2 7.
Quote from: myosh_tino on April 17, 2012, 11:56:04 PM
Also the western-most exit on I-380 is exit 5 because there a slim, slim, SLIM chance of I-380 being extended east WEST to CA-1.
What's INTERESTING about this:
Route 14 and I-380 both have on-paper extensions that will likely never be built...
Yet Route 14's exit numbering has the first numbered exit in Sylmar, completely ignoring the unconstructed segment through Reseda...while I-380's acknowledges planned a segment that has been dormant for years that, if built, would cross the San Andreas Fault!
Exit 155P on the Garden State Parkway. There's a separate Exit 155 nearby (to the north of 155P). I think I read somewhere, might have been on this forum, that the unusual "P" suffix when no other suffix is in use there was intended to denote that the exit leads to a freeway connection into Paterson.
Quote from: 1995hoo on April 18, 2012, 03:14:07 PM
Exit 155P on the Garden State Parkway. There's a separate Exit 155 nearby (to the north of 155P). I think I read somewhere, might have been on this forum, that the unusual "P" suffix when no other suffix is in use there was intended to denote that the exit leads to a freeway connection into Paterson.
I believe that is correct.
http://g.co/maps/e9xb7 (http://g.co/maps/e9xb7)
Exits A&B in Roswell, NM off of U.S. 70 West
Well, I forgot about this one, but in Deltona, Florida on I-4 there used to be Exits 53 CA & CB. It was intended as the whole interchange being Exit 53C, with two ramps for it. However, I do not know why it was not 53A or better yet 53 A for EB Saxton Boulevard and 53B for WB Saxton?
Even in Sanford, further west the exit for newly added CR 46A, that was in between Exits 50 and 51, had exit 51A and not 50A as the sequence called for.
Thank God for the change in exit numbering that put things sort of right. I say that cause the interchanges for CR 46A, SR 417, and SR 46 all have Exit 101 spite they are all separate interchanges spread out over 2 miles at least. It is, though, the fact that each exits ramps are long and are part of the same c/d roads for the first two exits passed. That is FDOT's way of keeping one exit travelers off the interstate. Hence, the long SR 435 SB to WB I-4 ramp passing the first exit for SR 482 off of I-4 near Universal in Orlando.
Does I-865 in Indy still have mile markers/exits in the 900's? Even if it doesn't, it would be a historical oddity.
Quote from: english si on April 18, 2012, 06:19:56 AM
Quote from: Bickendan on April 17, 2012, 08:47:32 PMA/AP-7 in Spain. This one really takes the cake.
As I have said before, it's only weird if you don't see the state boundaries and the fact that it's two different freeways with different zero points. That the distance-based numbers don't reset at state lines is unusual though - but of course pretty logical from a navigation standpoint, unlike the states.
A/AP-7 is special even with that in mind because both routes have two different 0 origins (one at the French border, the other 100 km away from A-7's western terminus in Algerciras) with overlaps in the middle and a mixture of distance and sequential series. This is excluding areas where A-7 takes N-340's exit numbers. Having drafted the two routes for the Clinched Highways, it was a spectacular mess to figure out.
Quote from: deanej on April 17, 2012, 12:02:28 PM
NY 17. Before PA switched to distance-based numbers, it went 1 (at I-90), 2, 4, 6, 7, etc. with still more gaps at exit 22, 55, etc. Some at-grades have numbers (Hale Eddy is hidden 85 and 86, Parksville was 98, Horseheads was collectively 53, etc.) while others did not (such as Newton Battlefield). It's as if the DOT had no clue what the freeway was going to look like when the numbers were installed.
The first exit in NY is still Exit 4. This is the only place I know of where a road's exit numbering doesn't reset at a state line. See Upstate NY Roads for an exit listing of I-86/NY 17 (http://www.upstatenyroads.com/i86.shtml).
Quote from: Michael on April 18, 2012, 07:14:48 PM
Quote from: deanej on April 17, 2012, 12:02:28 PM
NY 17. Before PA switched to distance-based numbers, it went 1 (at I-90), 2, 4, 6, 7, etc. with still more gaps at exit 22, 55, etc. Some at-grades have numbers (Hale Eddy is hidden 85 and 86, Parksville was 98, Horseheads was collectively 53, etc.) while others did not (such as Newton Battlefield). It's as if the DOT had no clue what the freeway was going to look like when the numbers were installed.
The first exit in NY is still Exit 4. This is the only place I know of where a road's exit numbering doesn't reset at a state line. See Upstate NY Roads for an exit listing of I-86/NY 17 (http://www.upstatenyroads.com/i86.shtml).
The Palisades Interstate Parkway in NY and NJ have the same set of sequential numbering in both states. 1 to 4 are in New Jersey and 5 and up are in New York.
Quote from: akotchi on April 17, 2012, 12:22:25 PM
The Pennsylvania Turnpike has an unusual exit numbering sequence WB in the Philly area
351
343
340
339
20
333
326
The oddball is the milepost on I-476 of the Mid-County toll plaza; otherwise there would be two different exit numbers for that plaza.
It is only signed as Exit 20 on the mainline in three places in the sequence.
I always wondered why they couldn't make it Exit 334/20, depending on the direction.
Quote from: 6a on April 18, 2012, 06:46:17 PM
Does I-865 in Indy still have mile markers/exits in the 900's? Even if it doesn't, it would be a historical oddity.
Don't believe it was the exit numbers in the 900s but the blue tenth mile markers in the medium.
Quote from: okroads on April 18, 2012, 05:13:55 PM
http://g.co/maps/e9xb7 (http://g.co/maps/e9xb7)
Exits A&B in Roswell, NM off of U.S. 70 West
Here's the image:
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Ffarm5.static.flickr.com%2F4079%2F4921428592_bd1ab65fb1_b.jpg&hash=e00523064e95485bdc93dcd723b9ebc473ba80fe)
oh good heavens, someone post that under "worst of road signs" please.
the lack of "BYPASS" and "BUSINESS" banners is an odious New Mexico practice. last week I got lost in Alamogordo at the 70-54/70-54 split due to similarly ambiguous signage.
Quote from: agentsteel53 on April 18, 2012, 11:26:37 PM
oh good heavens, someone post that under "worst of road signs" please.
I could have sworn I'd seen it there already. Definitely seen it somewhere here already. There are just soooo many things wrong with it, but the missing banners is definitely the most egregious error.
Quote from: PHLBOS on April 18, 2012, 03:21:15 PM
Quote from: 1995hoo on April 18, 2012, 03:14:07 PM
Exit 155P on the Garden State Parkway. There's a separate Exit 155 nearby (to the north of 155P). I think I read somewhere, might have been on this forum, that the unusual "P" suffix when no other suffix is in use there was intended to denote that the exit leads to a freeway connection into Paterson.
I believe that is correct.
Yes, and that part of 19 was originally planed as 444P.
Quote from: Michael on April 18, 2012, 07:14:48 PM
Quote from: deanej on April 17, 2012, 12:02:28 PM
NY 17. Before PA switched to distance-based numbers, it went 1 (at I-90), 2, 4, 6, 7, etc. with still more gaps at exit 22, 55, etc. Some at-grades have numbers (Hale Eddy is hidden 85 and 86, Parksville was 98, Horseheads was collectively 53, etc.) while others did not (such as Newton Battlefield). It's as if the DOT had no clue what the freeway was going to look like when the numbers were installed.
The first exit in NY is still Exit 4. This is the only place I know of where a road's exit numbering doesn't reset at a state line. See Upstate NY Roads for an exit listing of I-86/NY 17 (http://www.upstatenyroads.com/i86.shtml).
Formerly, the exits on the Capital Beltway did not reset between Virginia and Maryland. Then Maryland went to a milage-based system starting at the Wilson Bridge (so the exit before the American Legion Bridge was 41, and the exit just south of the American Legion was 14), but now they are continuous again (though mileage-based) from the Wilson Bridge around to the Springfield interchange. The Beltway between the Springfield Interchange and the Virginia side of the Wilson Bridge uses Virginia's I-95 mileposts, so the exit numbers there run from 170 at Springfield to 177 at U.S. 1 in Alexandria.
Quote from: Michael on April 18, 2012, 07:14:48 PM
Quote from: deanej on April 17, 2012, 12:02:28 PM
NY 17. Before PA switched to distance-based numbers, it went 1 (at I-90), 2, 4, 6, 7, etc. with still more gaps at exit 22, 55, etc. Some at-grades have numbers (Hale Eddy is hidden 85 and 86, Parksville was 98, Horseheads was collectively 53, etc.) while others did not (such as Newton Battlefield). It's as if the DOT had no clue what the freeway was going to look like when the numbers were installed.
The first exit in NY is still Exit 4. This is the only place I know of where a road's exit numbering doesn't reset at a state line. See Upstate NY Roads for an exit listing of I-86/NY 17 (http://www.upstatenyroads.com/i86.shtml).
The Hutch in New York and the Merritt Parkway in Connecticut used to have continuous exit numbers, but when New York renumbered theirs Connecticut didn't change their side, so now when you cross the state line you go from Exit 29 or 30 (I forget which) in New York to Exit 27 in Connecticut.
I-24 has two exits in Georgia, numbered 167 (I-59) and 169 (GA 299). The route spends a total of just over four miles in Georgia, re-entering Tennessee at either end, so GDOT decided the best solution was to just pretend they were still in Tennessee for exit numbering purposes. The mileposts on this stretch, however, are still numbered from 0 to 4.
Quote from: 1995hoo on April 19, 2012, 03:01:02 PM
The Hutch in New York and the Merritt Parkway in Connecticut used to have continuous exit numbers, but when New York renumbered theirs Connecticut didn't change their side, so now when you cross the state line you go from Exit 29 or 30 (I forget which) in New York to Exit 27 in Connecticut.
No, it's worse than that. The 8-ramp interchange for NY 120A/King St is currently exits 30S and 27 northbound, and exits 27 and 27S southbound. King St is right on the state line here, so half of the interchange is in New York maintained by NYSDOT and half of it is in Connecticut maintained by ConnDOT. New York makes no mention whatsoever of Connecticut's exit, and Connecticut makes only sloppy afterthought mention of New York's.
And if that wasn't complicated enough, New York has one sign which refers to their exit as 30 (not 30S), and Connecticut has one which refers to theirs as 27N (not 27). NYSDOT was even so bold as to place an EXIT 27N gore sign right in front of Connecticut's EXIT 27 gore sign southbound at one point (it lasted a few months before it was removed).
This has been the situation for the past decade or so since New York redid that portion of the Hutch and Connecticut replaced all the signs on the Merritt. Previously, New York signed their exit consistently as 30 northbound, and southbound there was nothing, not even a gore sign. Connecticut had full signage for their exit 27 southbound and a gore sign for their exit 27 northbound. Neither made any mention of the other state's exit.
Of course, these 8 ramps used to be utterly redundant since all turns were allowed from all of them. It could easily be just a four ramp interchange if the two DOTs could manage to coordinate who would close which ramps. Then Connecticut blocked off the left turn/straight lane from their southbound exit a few years back (but the error CT 120A shield there survived), forcing that traffic to use New York's exit - and so they had to start signing it.
Quote from: Michael on April 18, 2012, 07:14:48 PMThis is the only place I know of where a road's exit numbering doesn't reset at a state line.
In Washington state, exit numbers (and mileposts) on I-205 are contiguous with Oregon and are counted from the southern end with I-5. But both I-5 and I-82 have the mileposts and exit numbers reset. (I don't see the point with I-82, given how little of the route exists in Oregon, but it makes plenty of sense with I-205 as there would be duplicating exit numbers just 20 miles apart from each other.)
Quote from: Eth on April 19, 2012, 09:28:27 PM
I-24 has two exits in Georgia, numbered 167 (I-59) and 169 (GA 299). The route spends a total of just over four miles in Georgia, re-entering Tennessee at either end, so GDOT decided the best solution was to just pretend they were still in Tennessee for exit numbering purposes. The mileposts on this stretch, however, are still numbered from 0 to 4.
IIRC, those signs used to show both sets of exit numbers with one of them in parentheses.like 167 (1) or something like that
Quote from: national highway 1 on April 18, 2012, 11:20:36 PM
Quote from: okroads on April 18, 2012, 05:13:55 PM
http://g.co/maps/e9xb7 (http://g.co/maps/e9xb7)
Exits A&B in Roswell, NM off of U.S. 70 West
Here's the image:
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Ffarm5.static.flickr.com%2F4079%2F4921428592_bd1ab65fb1_b.jpg&hash=e00523064e95485bdc93dcd723b9ebc473ba80fe)
I've always believed that if NYSDOT had enough sense to extend Northern State Parkway to the Long Island Expressway, they should have Exit W-A for eastbound NY 25, Exit W-B for westbound NY 25, and Exit W-C for the Westbound I-495.
Yes, I know they originally planned the interchange with Jericho Turnpike as a diamond interchange, but a parclo would've made more sense there.
Today, I was in Peoria, IL, and noticed that IL 6 South at I-74/I-474 has Exits A & B.
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Ffarm8.staticflickr.com%2F7126%2F6951575052_5acec68abc_c.jpg&hash=2f2084435f6ff838cf07ed15ec840eee863395e7)
I-4's exit number for US 17, US 92, and FL 50 going east in Orlando, FL is Exit 83 A and there is no longer an Exit 83 thanks to the person who decided that the South Street left Westbound exit should not reopen after the Amway Center did. Plus, Exit 83 A was briefly Exit 83B as 83A was for Robinson Street a former exit prior to the South Street/ FL 408 interchange construction.
Then going Westbound the exit for the same is Exit 84A as Eastbound 83A, cause of changes made combining Exit 84 into A& B suffixes as former WB Exit 84 was the c/d ramp to both Ivanhoe and US 17, US 92, and FL 50. That is why the mileage based system is not that great in urban areas with exits less than a mile apart and using c/d roadways and service roads like I-4 uses in Downtown Orlando.
I still see New York still uses its N-S and E-W suffixes over the A & B letters on multiple ramp interchanges. I believe that NY is the only one left except for Exit 212 on I-80 in PA. PennDOT dropped directional suffixes even before the mile based exits were added and unless PA still has them elsewhere, I am to assume only the Empire State uniquely uses them.
The Richmond- Petersburg Turnpike had one for VA 10 at Chester before the Old Dominion State went to mile based numbers. I cannot think of any place that would still have other than NYS.
Off the top of my head, definitely Connecticut as well.
Add Vermont to the directional suffix list too
Quote from: roadman65 on May 18, 2012, 02:38:58 PM
I still see New York still uses its N-S and E-W suffixes over the A & B letters on multiple ramp interchanges. I believe that NY is the only one left except for Exit 212 on I-80 in PA. PennDOT dropped directional suffixes even before the mile based exits were added and unless PA still has them elsewhere, I am to assume only the Empire State uniquely uses them.
The Richmond- Petersburg Turnpike had one for VA 10 at Chester before the Old Dominion State went to mile based numbers. I cannot think of any place that would still have other than NYS.
I remember Virginia having a fair number of directionally-suffixed ramps in Northern Virginia when I was a kid. The (now-demolished) left-lane exit from the Inner Loop of the Beltway to I-66 was Exit 9W, for example. I believe they did away with this prior to, or maybe shortly after, the December 1982 opening of I-66 inside the Beltway, however, because I don't ever remember the ramp to inbound I-66 being numbered as Exit 9E (and at the time the I-66 extension opened we lived near Fairfax Hospital and used the Beltway there quite frequently). We moved to a neighborhood off VA-236 a few months later and I recall that interchange's ramps were Exit 6A and 6B for the entire time I lived out there until VDOT renumbered the Beltway exits around 2000 or so.
I don't know of any directional suffix anywhere outside of New York anymore–which isn't to say they don't exist (as two other people have said they do), just that I don't recall any. I remember when they made the switch I thought the idea of "A" and "B" made sense as easier to remember, but on the other hand back then I didn't notice that the "A" and "B" usually correspond on the two carriageways. That is to say, on one side of the road you encounter Exit 6A and then Exit 6B, but on the other side you encounter 6B and then 6A. I've always found that a bit illogical. I suppose the theory is that the exit number is then the same for the same direction on the other road (in this case, Exit 6A took you to VA-236 west towards Fairfax), and I understand the logic there, but having "B" before "A" just seems backwards. I suppose it's not as bad as Exits 21, 21B, and 21A on the New York Thruway.
Quote from: Hot Rod Hootenanny on April 18, 2012, 10:59:04 PM
Quote from: 6a on April 18, 2012, 06:46:17 PM
Does I-865 in Indy still have mile markers/exits in the 900's? Even if it doesn't, it would be a historical oddity.
Don't believe it was the exit numbers in the 900s but the blue tenth mile markers in the medium.
The 900s mileposts went away when it was renumbered to 865. Now 865 starts at mile 0 and ends at just about mile 5. There are no exits other than the termini, and they weren't numbered when it was part of 465 and still aren't numbered now, notwithstanding one mention of "Exit 0" heading westbound on an Indy-multiplex-style "US 52 follow I-865 to Exit 0" sign. While the westbound traffic only has one option, NB on 65, EB 865 has a choice when it hits 465, and the ramp to 465 SB probably ought to get an exit number but probably never will. Maybe if an exit is built in between the ends of 865, that would force them to number the EB-SB exit.
Quote from: 1995hoo on May 18, 2012, 06:13:55 PM
Quote from: roadman65 on May 18, 2012, 02:38:58 PM
I still see New York still uses its N-S and E-W suffixes over the A & B letters on multiple ramp interchanges. I believe that NY is the only one left except for Exit 212 on I-80 in PA. PennDOT dropped directional suffixes even before the mile based exits were added and unless PA still has them elsewhere, I am to assume only the Empire State uniquely uses them.
The Richmond- Petersburg Turnpike had one for VA 10 at Chester before the Old Dominion State went to mile based numbers. I cannot think of any place that would still have other than NYS.
I remember Virginia having a fair number of directionally-suffixed ramps in Northern Virginia when I was a kid. The (now-demolished) left-lane exit from the Inner Loop of the Beltway to I-66 was Exit 9W, for example. I believe they did away with this prior to, or maybe shortly after, the December 1982 opening of I-66 inside the Beltway, however, because I don't ever remember the ramp to inbound I-66 being numbered as Exit 9E (and at the time the I-66 extension opened we lived near Fairfax Hospital and used the Beltway there quite frequently). We moved to a neighborhood off VA-236 a few months later and I recall that interchange's ramps were Exit 6A and 6B for the entire time I lived out there until VDOT renumbered the Beltway exits around 2000 or so.
I don't know of any directional suffix anywhere outside of New York anymore–which isn't to say they don't exist (as two other people have said they do), just that I don't recall any. I remember when they made the switch I thought the idea of "A" and "B" made sense as easier to remember, but on the other hand back then I didn't notice that the "A" and "B" usually correspond on the two carriageways. That is to say, on one side of the road you encounter Exit 6A and then Exit 6B, but on the other side you encounter 6B and then 6A. I've always found that a bit illogical. I suppose the theory is that the exit number is then the same for the same direction on the other road (in this case, Exit 6A took you to VA-236 west towards Fairfax), and I understand the logic there, but having "B" before "A" just seems backwards. I suppose it's not as bad as Exits 21, 21B, and 21A on the New York Thruway.
Mass still had a couple old N-S/E-W exits on 128 in Danvers; are they still there? It's been nearly a year since I checked, despite being in Peabody just 48 hours ago. Exit 25E-W (Route 114) was renumbred back in the late 80s; the NB 128 signs were mostly replaced to show directions with the shields but the SB signs were not; only the exit suffixes were changed so the exits would have the same numbers in both directions. That led to signs which for over 20 years read "Exit 25B/114/Middleton" and "Exit 25A/114/Salem" with no indication of the direction at all. Wonder why they didn't at least slap a direction plate on or something.
Exit 23N-S (Route 35) and 22E-W (Route 62, only split on 128 NB) kept their directional suffixed exit numbers until at least a year ago, but I believe those signs were scheduled for replacement and probably would get A-B lettering when replaced.
The Ohio Turnpike had a similar issue with Exits 3, 3B, 3A to New York's 21s. The mileage-based numbers took care of that, but it was fun while it lasted.
Quote from: PurdueBill on May 18, 2012, 11:13:40 PM
The 900s mileposts went away when it was renumbered to 865. Now 865 starts at mile 0 and ends at just about mile 5. There are no exits other than the termini, and they weren't numbered when it was part of 465 and still aren't numbered now, notwithstanding one mention of "Exit 0" heading westbound on an Indy-multiplex-style "US 52 follow I-865 to Exit 0" sign. While the westbound traffic only has one option, NB on 65, EB 865 has a choice when it hits 465, and the ramp to 465 SB probably ought to get an exit number but probably never will. Maybe if an exit is built in between the ends of 865, that would force them to number the EB-SB exit.
The 900s are gone from the old I-465 dogleg, but they're back on SR 641 in Terre Haute. Note, the exits are not numbered (yet, at least) and there aren't even the regular freeway mile markers, but there are the standard INDOT blue ones.
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fhighwayexplorer.com%2FPhotos%2FTemp%2FSR641_900MM.jpg&hash=53a11640bf40c4cebd0e3550a7021301ebe59c07)
In Michigan, neither end of M-6 has exit numbers, yet the western terminus of I-96 is Exit 1.
US-31 has a few oddities. First, the northern termini of both sections have exit numbers. In effect, US-31 exits itself at Exit 24 (east of Benton Harbor) and Exit 170A (east of Ludington). Second, the oddball Exit 47AB in Holland, which appears to be based on I-196 milemarkers (US-31 splits off of I-196 at Exit 44, and this interchange appears to be about three miles north of the split). If this interchange was numbered properly, it would likely be in the mid-to-upper-70s range.
Quote from: ftballfan on May 18, 2012, 11:34:17 PM
In Michigan, neither end of M-6 has exit numbers, yet the western terminus of I-96 is Exit 1.
US-31 has a few oddities. First, the northern termini of both sections have exit numbers. In effect, US-31 exits itself at Exit 24 (east of Benton Harbor) and Exit 170A (east of Ludington). Second, the oddball Exit 47AB in Holland, which appears to be based on I-196 milemarkers (US-31 splits off of I-196 at Exit 44, and this interchange appears to be about three miles north of the split). If this interchange was numbered properly, it would likely be in the mid-to-upper-70s range.
I saw that there in 08. I thought it was part of Business I-196's exit numbering scheme. It might of been that the Holland Bypass on I-196 might of been completed later on and this was defacto I-196 until completion. I suppose if Michigan ever gets US 31 upgraded to freeway from Holland to Grand Haven it will change, but then again will they complete the missing freeway segment at Benton Harbor anytime soon or continue past Ludington to maybe Traverse City in our lifetime either?
Quote from: roadman65 on May 19, 2012, 01:27:09 PM
Quote from: ftballfan on May 18, 2012, 11:34:17 PM
In Michigan, neither end of M-6 has exit numbers, yet the western terminus of I-96 is Exit 1.
US-31 has a few oddities. First, the northern termini of both sections have exit numbers. In effect, US-31 exits itself at Exit 24 (east of Benton Harbor) and Exit 170A (east of Ludington). Second, the oddball Exit 47AB in Holland, which appears to be based on I-196 milemarkers (US-31 splits off of I-196 at Exit 44, and this interchange appears to be about three miles north of the split). If this interchange was numbered properly, it would likely be in the mid-to-upper-70s range.
I saw that there in 08. I thought it was part of Business I-196's exit numbering scheme. It might of been that the Holland Bypass on I-196 might of been completed later on and this was defacto I-196 until completion. I suppose if Michigan ever gets US 31 upgraded to freeway from Holland to Grand Haven it will change, but then again will they complete the missing freeway segment at Benton Harbor anytime soon or continue past Ludington to maybe Traverse City in our lifetime either?
The Benton Harbor segment is still marked as "under construction" on most maps (including the official state map), while not appearing at all in DeLorme's atlas or on MDOT's website. Has it been officially cancelled (making Napier Ave a permanent rerouting of US-31)? It seems like MDOT only does new road projects in five counties (Kent, Macomb, Oakland, Ottawa, Wayne). Also, I don't think there have really been any official plans for an extension of the freeway north of Ludington.
Looks like MDOT is considering the M-231 project (which would serve more as a faster way to Allendale/GVSU than a Grand Haven bypass) so Ottawa County wouldn't have to consider building a new bridge of their own and/or four-laning 68th Ave.
About I-196, I think the segment between US-31 and Grandville wasn't completed until the 1970s while the rest was completed by the early 1960s.
Quote from: Kacie Jane on May 18, 2012, 04:17:13 PM
Off the top of my head, definitely Connecticut as well.
Connecticut mixes and matches. There doesn't seem to be a standard regardless if the interchanges provide access to both directions of a signed route. Sometimes they use the alphabet sequence (A-B-C-D) and other times it's directional (N-S-E-W), sometimes both styles exist on the same highway. I think Route 2's 5D is the deepest it ever gets into the alphabet sequence, and I think 3 of the 4 directions are the most present at some interchanges (could be wrong about this - thought there was an interchange somewhere that used N, S, and W).
From http://alpsroads.net/roads/ct/i-95/s1.html
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Falpsroads.net%2Froads%2Fct%2Fi-95%2Fs84.jpg&hash=c0aa472a6261e1bc8c14a525b64beb30c2497547)
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Falpsroads.net%2Froads%2Fct%2Fi-95%2Fs84r1.jpg&hash=880ad49a4d480d0bfd08f3c520143041c2caf12c)
NY's depends on who maintains the road. Regions 4 and 5 use A/B. The other regions and the Thruway use directional suffixes.
Quebec uses directional suffixes... the thing is, since it's in French, it's N-S-E-O (Nord, Sud, Est, Ouest), not N-S-E-W. To alleviate the problem of the O looking near identical to a 0, they hyphenate it (example) (http://maps.google.com/?ll=45.473456,-73.706996&spn=0.003822,0.010568&hnear=New+York&t=m&z=17&layer=c&cbll=45.473174,-73.707411&panoid=3UI4GB0IYiQPA__TslFG0Q&cbp=12,314.82,,0,-8.5). And they are consistent in doing so. The opposing exit is "3-E".
They have distance based numbering but since it's based on kilometers rather than miles and they haven't been in the habit of cramming interchanges closer together than that, they avoid going into alphabet soup in any other circumstance.
Quote from: Duke87 on May 20, 2012, 10:24:48 AM
Quebec uses directional suffixes... the thing is, since it's in French, it's N-S-E-O (Nord, Sud, Est, Ouest), not N-S-E-W. To alleviate the problem of the O looking near identical to a 0, they hyphenate it (example) (http://maps.google.com/?ll=45.473456,-73.706996&spn=0.003822,0.010568&hnear=New+York&t=m&z=17&layer=c&cbll=45.473174,-73.707411&panoid=3UI4GB0IYiQPA__TslFG0Q&cbp=12,314.82,,0,-8.5). And they are consistent in doing so. The opposing exit is "3-E".
They have distance based numbering but since it's based on kilometers rather than miles and they haven't been in the habit of cramming interchanges closer together than that, they avoid going into alphabet soup in any other circumstance.
Is that why there are no more numbers along I-71 in Cincinnati? I remember how many letters Exit 1 had back in 89. I was there back in 03 and saw the lack of any exit numbers then.
Then alphabet soup created problems for I-4 in Orlando when both Robinson and South Street ramps were closed as now there is an Exit 83A and no others in that number, as I previously mentioned in this thread.
Quote from: roadman65 on May 20, 2012, 10:32:57 AM
Is that why there are no more numbers along I-71 in Cincinnati? I remember how many letters Exit 1 had back in 89. I was there back in 03 and saw the lack of any exit numbers then.
You didn't see them because you were looking in the wrong spot. The sequence which goes up to 1G is on I-75, not I-71. :)
Of course, a large part of this is ODOT's not wanting to have an exit 0. If you actually went by nearest milepost if would be 0A-0B-0C-0D-1A-1B-1C. Which is maybe
slightly less crazy. The fact that the state line is actually on the Ohio side of the river rather than in the middle doesn't help the situation, either.
Quote from: NE2 on May 19, 2012, 07:57:43 PM
From http://alpsroads.net/roads/ct/i-95/s1.html
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Falpsroads.net%2Froads%2Fct%2Fi-95%2Fs84.jpg&hash=c0aa472a6261e1bc8c14a525b64beb30c2497547)
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Falpsroads.net%2Froads%2Fct%2Fi-95%2Fs84r1.jpg&hash=880ad49a4d480d0bfd08f3c520143041c2caf12c)
That's the one I was thinking of! I knew it was in the New London area somewhere.
Quote from: Duke87 on May 20, 2012, 10:55:38 AM
Quote from: roadman65 on May 20, 2012, 10:32:57 AM
Is that why there are no more numbers along I-71 in Cincinnati? I remember how many letters Exit 1 had back in 89. I was there back in 03 and saw the lack of any exit numbers then.
You didn't see them because you were looking in the wrong spot. The sequence which goes up to 1G is on I-75, not I-71. :)
Of course, a large part of this is ODOT's not wanting to have an exit 0. If you actually went by nearest milepost if would be 0A-0B-0C-0D-1A-1B-1C. Which is maybe slightly less crazy. The fact that the state line is actually on the Ohio side of the river rather than in the middle doesn't help the situation, either.
I wonder what it is that Ohio has against Exit 0. It's not very illogical. Indiana uses Exit 0 a lot and it's very useful when there is another exit nearby (I-69 and I-469, for example, have Exit 0 and nearby Exit 1. 469 even splits it into 0A and 0B! The exception in Indiana is 465 where they wrap the numbers around and use 53 instead of 0 for the zero-point exit, I-65 on the south side.)
I never got what the big deal was with the directional suffixes; there are occasions where in both directions of a highway the A exit comes before the B due to interesting ramp configurations, in order to keep the A and B labels assigned to the same direction of the intersecting route, but then you are violating expectation of B coming before A in the direction in which the exit numbers decrease.
The Everett Turnpike in NH has an interesting hybrid--it has Exits 5E, 5W, and 5A in that order heading northbound. It's only 5W and 5E southbound. (I-93 has some traditional ones like 15E-W but nothing with E/W or N/S plus an A.)
Quote from: roadman65 on May 18, 2012, 02:38:58 PM
left except for Exit 212 on I-80 in PA.
Gone. Can't remember exactly when I took this photo, but it was in 2010 as I have a photo from 2009 with the W-S letters still posted.
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fimg.photobucket.com%2Falbums%2Fv645%2Frickmastfan67%2FInterstates%2FPA%2FI-80%2FP1010081s.jpg&hash=de98b7cd05577434d078375c62ec235965879892)
Quote from: Steve on April 16, 2012, 08:35:34 PM
Park Ave. has A-B exits in State College, PA. This also happens at US 22/219 in Ebensburg (I think) and US 422/219 in Indiana. No other lettered or numbered exits on any of those highways. (Park Ave. is by the I-99/US 322 junction). I-76 Exit 354 is the first exit in New Jersey. Same state, I-195 Exit 60 is the westernmost exit on the freeway.
There are two other "A-B" exits in PA that you missed Steve. US-40 @ PA-Turnpike-43 and US-422/PA-28 @ PA-66.
Quote from: roadman65 on May 18, 2012, 02:38:58 PM
I still see New York still uses its N-S and E-W suffixes over the A & B letters on multiple ramp interchanges. I believe that NY is the only one left except for Exit 212 on I-80 in PA. PennDOT dropped directional suffixes even before the mile based exits were added and unless PA still has them elsewhere, I am to assume only the Empire State uniquely uses them.
The Richmond- Petersburg Turnpike had one for VA 10 at Chester before the Old Dominion State went to mile based numbers. I cannot think of any place that would still have other than NYS.
West Virginia uses directional suffixes for I-81 in the eastern panhandle, but A-B on all the other interstates in the state.
Quote from: rickmastfan67 on May 21, 2012, 12:22:13 AM
Quote from: roadman65 on May 18, 2012, 02:38:58 PM
left except for Exit 212 on I-80 in PA.
Gone. Can't remember exactly when I took this photo, but it was in 2010 as I have a photo from 2009 with the W-S letters still posted.
Of course, the exit was originally N-S as PA 147 went through on both sides.
IIRC The exit still was N-S well into the I-180 era.
(Even though I've passed that exit over 100 times in the past 27 years, I can't tell you when it went from N-S to W-S)
Even though I like sequential numbering, the whole E-W/N-S thing didn't always make sense. As I-81 spends some places going mostly E-W at many points in PA, you had weird things like the PA 61 exits being labeled E-W. IIRC It was 36E for PA 61 South and 36W for PA 61 North.
Regarding the use of Exit 0.....
Is there a case where a state 'borrows' another state or highway's numbering scheme?
Let's say highway X crosses a state line, and there are two exits right after the state line that would typically be numbered 0A and 0B, or 0 and 1, or 1A and 1B. Maybe it would make more sense to motorists (but maybe not roadgeeks) to simply number them 371A and 371B (or whatever the number would be) if that's where the other state's numbering scheme had left off?
Example exit list:
360 . 361 . 366A . 366B . 369 . 370 |State line| 371A . 371B . 1 . 2 . 4A . 4B
Instead of:
360 . 361 . 366A . 366B . 369 . 370 |State line| 0A . 0B . 1 . 2 . 4A . 4B
Quote from: kphoger on May 21, 2012, 10:24:53 AM
Regarding the use of Exit 0.....
Is there a case where a state 'borrows' another state or highway's numbering scheme?
Let's say highway X crosses a state line, and there are two exits right after the state line that would typically be numbered 0A and 0B, or 0 and 1, or 1A and 1B. Maybe it would make more sense to motorists (but maybe not roadgeeks) to simply number them 371A and 371B (or whatever the number would be) if that's where the other state's numbering scheme had left off?
Example exit list:
360 . 361 . 366A . 366B . 369 . 370 |State line| 371A . 371B . 1 . 2 . 4A . 4B
Instead of:
360 . 361 . 366A . 366B . 369 . 370 |State line| 0A . 0B . 1 . 2 . 4A . 4B
The Capital Beltway (I-495) in MD/VA. The outer loop after it crosses into VA from MD across Cabin John Bridge. At one time the VA exits on their potion of the Beltway were sequential instead of mile based. When they were converted to mile based, they continued on from MD's existing mile based numbers. This ends at I-95. From that point to Wilson Bridge, the Beltway uses I-95's miles for exit numbers.
Quote from: kphoger on May 21, 2012, 10:24:53 AM
Regarding the use of Exit 0.....
Is there a case where a state 'borrows' another state or highway's numbering scheme?
I-76 entering New Jersey (this is the DRPA doing it). From http://www.interstate-guide.com/i-676_panj.html
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fwww.interstate-guide.com%2Fimages676%2Fi-676_nj_et_16.jpg&hash=bac93f15542f52b52a50b11fd0875221df4629ff)
I would think the majority of states in that scenario would just fudge it to eliminate the 0 if so desired–instead of 0A/0B/1, 1A/1B/1C. This is how Oklahoma avoids Exit 0.
Quote from: PurdueBill on May 18, 2012, 11:13:40 PMMass still had a couple old N-S/E-W exits on 128 in Danvers; are they still there? It's been nearly a year since I checked, despite being in Peabody just 48 hours ago. Exit 25E-W (Route 114) was renumbred back in the late 80s; the NB 128 signs were mostly replaced to show directions with the shields but the SB signs were not; only the exit suffixes were changed so the exits would have the same numbers in both directions. That led to signs which for over 20 years read "Exit 25B/114/Middleton" and "Exit 25A/114/Salem" with no indication of the direction at all. Wonder why they didn't at least slap a direction plate on or something.
Exit 23N-S (Route 35) and 22E-W (Route 62, only split on 128 NB) kept their directional suffixed exit numbers until at least a year ago, but I believe those signs were scheduled for replacement and probably would get A-B lettering when replaced.
Add MA 1A (Exit 20) in Beverly to that list as well. It used to be 20S-N but it changed over to 20A-B when newer overhead signs were erected about a decade ago.
When the original modern-looking steel signs were erected during the late 70s (1977); MassDPW didn't bother adding cardinal directions to the signs. Such action, allowed for narrower signs for ones that listed only Salem for its control destination (114 east off 128 North and the 35 South exit signs).
The original 50s-era wooden signs didn't feature direction cardinals either; just a suffix on the smaller Exit panel mounted above the main sign.
Speaking of 128; its exit number oddity is that its starts at Exit 9 in Gloucester (and increases southbound to 29 at I-95 North) and that exit along with 10 & 11 are actually intersections not interchanges. 11's actually a rotary (Grant Circle). Another rotary located between Exits 11 & 10 (both of which are MA 127) called Blackburn Circle has no exit number whatsoever.
Quote from: kendancy66 on May 21, 2012, 10:49:06 AM
Quote from: kphoger on May 21, 2012, 10:24:53 AM
Regarding the use of Exit 0.....
Is there a case where a state 'borrows' another state or highway's numbering scheme?
Let's say highway X crosses a state line, and there are two exits right after the state line that would typically be numbered 0A and 0B, or 0 and 1, or 1A and 1B. Maybe it would make more sense to motorists (but maybe not roadgeeks) to simply number them 371A and 371B (or whatever the number would be) if that's where the other state's numbering scheme had left off?
Example exit list:
360 . 361 . 366A . 366B . 369 . 370 |State line| 371A . 371B . 1 . 2 . 4A . 4B
Instead of:
360 . 361 . 366A . 366B . 369 . 370 |State line| 0A . 0B . 1 . 2 . 4A . 4B
The Capital Beltway (I-495) in MD/VA. The outer loop after it crosses into VA from MD across Cabin John Bridge. At one time the VA exits on their potion of the Beltway were sequential instead of mile based. When they were converted to mile based, they continued on from MD's existing mile based numbers. This ends at I-95. From that point to Wilson Bridge, the Beltway uses I-95's miles for exit numbers.
The Beltway had consecutive numbers all the way around prior to then, but they ascended in the other direction. The numbers were originally sequential in a clockwise direction starting with Exit 1 at US-1 in Alexandria, Virginia, and running around to Exit 38 just across the Wilson Bridge at I-295 in PG County, Maryland. Exit 14 was the George Washington Parkway in Virginia and the next exit, located in Maryland across what we then called the Cabin John Bridge, was Exit 15 (serving what was then the Maryland side of the George Washington Parkway). There was no Exit 22 because the road planned for that number was cancelled. In 1977 I-95 was shifted from Shirley Highway in Virginia (and a small segment in DC) to the eastern half of the Beltway, and around the same time Maryland was making plans to use mileage-based exit numbers. So around 1980 they renumbered their exits such that the old Exit 38 became Exit 2 and it ascended anti-clockwise to the old Exit 15, which became Exit 41. Virginia left the sequential exit numbers in place until 2000; during the interim, one new exit opened in Virginia between Exit 2 (VA-241, Telegraph Road) and Exit 3 (Van Dorn Street); it was numbered Exit 3A, probably because Exit 2 already had two ramps numbered 2A and 2B. (It's now I-95 Exit 174.)
I'm pretty certain the Maryland exit number switch didn't happen much before 1980 because I remember the Beltway exit numbers changing and I doubt I'd have remembered it had it been much before 1980 since I was 7 years old that year.
The anti-clockwise numbering now in place is an exception to the MUTCD principle that an orbital use clockwise numbering. In this case the exception is due to the presence of I-95 on the eastern half of the Beltway–its 2di status means its north—south exit numbers trump the 3di clockwise numbers that would otherwise apply. I suppose you could consider the western half of the Beltway (the side numbered solely as I-495) to be another situation of an Interstate borrowing another route's exit numbers because when I-95 leaves the Beltway near College Park, Maryland, both I-95 and I-495 continue to have their exit numbers ascend (northbound and anti-clockwise, respectively) based on the mileage from the same starting point at the Virginia state line partway across the Potomac River on the Wilson Bridge.
I never understood why it was a problem to have the consecutive numbers in Virginia versus the mile-based numbers in Maryland. It seems to me it's routine to see exit numbers resetting at a state line such that it shouldn't have been confusing. The old setup where there were two separate George Washington Parkways in Virginia and Maryland (the connecting segment was cancelled many years ago) was a more understandable source of confusion for people, and it was fixed around 1990 when Maryland's side was renamed to Clara Barton Parkway (instead of the more sensible Martha Washington Parkway name that was proposed).
To give another example of a state "borrowing" another state's numbers, the Merritt Parkway in Connecticut is an example of that. Originally the numbers on the Hutchinson River Parkway in New York and the Merritt Parkway were continuous, but over the years New York tweaked its numbers a bit and Connecticut never did, so they no longer match. I believe Exit 27 is the first exit in Connecticut going northbound.
Quote from: PHLBOS on May 21, 2012, 04:49:55 PM
Add MA 1A (Exit 20) in Beverly to that list as well. It used to be 20S-N but it changed over to 20A-B when newer overhead signs were erected about a decade ago.
.............
Speaking of 128; its exit number oddity is that its starts at Exit 9 in Gloucester (and increases southbound to 29 at I-95 North) and that exit along with 10 & 11 are actually intersections not interchanges. 11's actually a rotary (Grant Circle). Another rotary located between Exits 11 & 10 (both of which are MA 127) called Blackburn Circle has no exit number whatsoever.
Yep, I remember 20S-N as well but on here probably you and I are the only ones who remember them. :P Wish I'd taken pictures of those to document them when they were still alive.
The exit numbering in Mass used to be so wacky--128 starting at 9 (not like there is room for 8 more exits) and increasing southbound to 69 or 70, by far the highest exit numbers in Mass at the time; the "128=25" thing being used (which remains on US 3 north of town); I-95 going through three sets of exit numbers (its own from RI to 128, 128's on the overlap, and none at all north of 128 to NH); the dual mile/exit numbers on I-93 north of Boston (the last evidence of which only disappeared in the past year at 128*); most of 128's exits being renumbered to I-93 or I-95 exit numbers and the I-93 exit north of Boston miraculously staying Exit 37 despite all the others changing**......old maps are quite a hoot to look at.
*The old exit numbers on 93 north of Boston included N-S or E-W suffixes but changed to A-B when I-93 was renumbered as a single set of exit numbers starting in Canton. The signage at 128 was newer but still had the mileage atop even the gore signs, and they simply pried off the mile number on those signs. As recently as last year, the gore sign for at least Exit 37A southbound (to 128/95 NB) still had that extra space at the top of the sign.
**Sadly, I can't recall if the 93 exits from 128 used N-S but I think they did. PHLBOS, do you remember? Did 37N become 37A? Because I don't recall 37B becoming 37A and vice versa, which would have been mayhem. I remember when all those exit numbers were changing how they had the black-on-white FORMERLY signs at the exits and I don't recall what was at that exit. It still amazes me that somehow with all the changes, that Exit 37 stayed Exit 37--and I-93's exit number at the same interchange also became 37!
Quote from: PurdueBill on May 21, 2012, 07:04:59 PMThe exit numbering in Mass used to be so wacky--128 starting at 9 (not like there is room for 8 more exits) and increasing southbound to 69 or 70, by far the highest exit numbers in Mass at the time; the "128=25" thing being used (which remains on US 3 north of town); I-95 going through three sets of exit numbers (its own from RI to 128, 128's on the overlap, and none at all north of 128 to NH); the dual mile/exit numbers on I-93 north of Boston (the last evidence of which only disappeared in the past year at 128*); most of 128's exits being renumbered to I-93 or I-95 exit numbers and the I-93 exit north of Boston miraculously staying Exit 37 despite all the others changing**......old maps are quite a hoot to look at.
*The old exit numbers on 93 north of Boston included N-S or E-W suffixes but changed to A-B when I-93 was renumbered as a single set of exit numbers starting in Canton. The signage at 128 was newer but still had the mileage atop even the gore signs, and they simply pried off the mile number on those signs. As recently as last year, the gore sign for at least Exit 37A southbound (to 128/95 NB) still had that extra space at the top of the sign.
**Sadly, I can't recall if the 93 exits from 128 used N-S but I think they did. PHLBOS, do you remember? Did 37N become 37A? Because I don't recall 37B becoming 37A and vice versa, which would have been mayhem. I remember when all those exit numbers were changing how they had the black-on-white FORMERLY signs at the exits and I don't recall what was at that exit. It still amazes me that somehow with all the changes, that Exit 37 stayed Exit 37--and I-93's exit number at the same interchange also became 37!
IIRC, the highest exit number for 128 was 69 and it was for the Northbound Southeast Expressway (then, just MA 3). The signs at that interchange were also unique in that the route shields & cardinal were actually the left third of the sign board with the control cities and arrows occupying the remaining two-thirds.
As far as the I-93 changing from N-S-E-W to just A-B; that coincided with the conversion to the current exit numbering that took place in 1986-1987; although the renumbering started as early as 1985 when the Southeast Expressway was being overhauled. Exits 37A-B off I-93 was originally Exits 25N-S then later Exits 11N-S (with the mile marker composite tabs). I believe that interchange
was signed as
MILE 10 - EXIT 11. During the 80s renumbering, many of those early 70s era signs (now long gone) along I-93 north of Boston simply had new stickers bearing
EXIT XX placed in the middle of the large exit tab with the lettering from the old Mile and Exit Numbers removed. Such a move resulted in motorists still seeing a "glimpse" of the old numbers (via light green shadows on the signs).
The I-95 renumbering that took place roughly a year later, in anticipation of the then-eventual completion of the I-95/MA 128 interchange (circa 1988), was where EXITS 37S-N became the current EXITS 37A-B.
128 starting at Exit 9 in Gloucester (it didn't always) was supposedly due to a planned extension to Rockport that never materialized.
http://www.bostonroads.com/roads/MA-128/ (http://www.bostonroads.com/roads/MA-128/)
Scroll towards the bottom of the page.
I wish I could find that picture of the recent gore sign with extra space at the top for the mileage. I guess it was done that way because the signs at that interchange were new enough. I remember the extra-wide and extra-tall tabs on I-93 in the previous-generation signs that gave the hint to the old numbering and mileage...it was sad seeing them go but I guess their time had come.
I always thought that 8 more "exits" seemed like a lot, even with an extension to Rockport--that would be a lot of intersections or interchanges, but by that far north 128 is nowhere near the character it is much further south.
Until you mentioned them, I had almost forgotten the old, old sign layout down at the south end of 128....
Quote from: PurdueBill on May 22, 2012, 11:18:24 PM
I wish I could find that picture of the recent gore sign with extra space at the top for the mileage.
How old is this 'recent sign' you're referring to? The 90s era signage with the button-copy
93 in the I-shields all featured the conventional exit tabs right-justified.
It's possible that the sign you're referring to was a one-off replacement due to the original sign being damaged in an accident and the fabricator just matched the lettering and dimensions of the previous sign in kind.
Quote from: PHLBOS on May 23, 2012, 07:57:38 AM
Quote from: PurdueBill on May 22, 2012, 11:18:24 PM
I wish I could find that picture of the recent gore sign with extra space at the top for the mileage.
How old is this 'recent sign' you're referring to? The 90s era signage with the button-copy 93 in the I-shields all featured the conventional exit tabs right-justified.
It's possible that the sign you're referring to was a one-off replacement due to the original sign being damaged in an accident and the fabricator just matched the lettering and dimensions of the previous sign in kind.
What do you know--I found it eventually. I was only able to get a picture at night one time but here it is. The 37A was a patch but that is only able to be made out in the night pic from the slight difference in reflectivity of that vs. the rest of the lettering. The extra space at the top is a relic of the mileage.
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fwww2.uakron.edu%2Fgenchem%2Fi93sb37A.jpg&hash=dc53016c8d431215b2f86537e93e4782bdd70b07)
The section of Florida's Turnpike between the split from the Homestead Extension are 4X (the exit as you approach it northbound), 2X for Sun Life Stadium, and 0X (unsigned) for the Toll Plaza at the Golden Glades Interchange.
(https://live.staticflickr.com/4717/39967367052_f90eb54008_b.jpg) (https://flic.kr/p/23TMcMo)
(https://live.staticflickr.com/4675/39967366642_3538bc251d_b.jpg) (https://flic.kr/p/23TMcEj)
(fixed photo links)
Quote from: PurdueBill on May 23, 2012, 08:43:42 AMWhat do you know--I found it eventually. I was only able to get a picture at night one time but here it is. The 37A was a patch but that is only able to be made out in the night pic from the slight difference in reflectivity of that vs. the rest of the lettering. The extra space at the top is a relic of the mileage.
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fwww2.uakron.edu%2Fgenchem%2Fi93sb37A.jpg&hash=dc53016c8d431215b2f86537e93e4782bdd70b07)
That sign's probably from the early 70s as well. The 37A patch replaced what was once 11N. The smaller
MILE 10 lettering was indeed above the
EXIT lettering.
The approach signs all had the mile number above the exit number whereas the exit sign itself had the mile number next to the exit number (example: MILE 10 - EXIT 11N).
Worth noting: 2 of those exit signs that were replaced during the 90s re-signing project were actually the original signage from the 1960s w/button-copy lettering and beige horizontal 128 shields (that were replaced w/I-95 shields circa 1981-1982). The last approach sign (before the exit and gore signs) for 128 (95) North from I-93 North and for 128 (95) South from I-93 South were those 2 signs. The exit tabs were actually separate from the main sign.
When the DPW changed I-93's exit numbers the first time around (from 25 to 11 at 128/95 during the early 70s); button-copy lettering for the mile and exit numbers were crammed very close together on the older exit tab (due to the tab being originally sized for only the exit number, these tabs had no border outline BTW). When the exit numbers changed again, I believe the old button copy lettering was removed and a new EXIT number sticker was placed in the middle of the tab.
Quote from: formulanone on May 23, 2012, 01:42:39 PM
The section of Florida's Turnpike between the split from the Homestead Extension are 4X (the exit as you approach it northbound), 2X for Sun Life Stadium, and 0X (unsigned) for the Toll Plaza at the Golden Glades Interchange.
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fformulanone.org%2Fwp-content%2Fuploads%2F2012%2F05%2FExit2Xsign.jpg&hash=eabec42f0126ca30f2a27a95fbc9b15f3570be20)
....
I like the way the bridge girders are painted in Dolphins colors at that interchange. Neat gesture.
Quote from: PHLBOS on May 23, 2012, 03:57:20 PM
That sign's probably from the early 70s as well. The 37A patch replaced what was once 11N. The smaller MILE 10 lettering was indeed above the EXIT lettering.
The approach signs all had the mile number above the exit number whereas the exit sign itself had the mile number next to the exit number (example: MILE 10 - EXIT 11N).
Worth noting: 2 of those exit signs that were replaced during the 90s re-signing project were actually the original signage from the 1960s w/button-copy lettering and beige horizontal 128 shields (that were replaced w/I-95 shields circa 1981-1982). The last approach sign (before the exit and gore signs) for 128 (95) North from I-93 North and for 128 (95) South from I-93 South were those 2 signs. The exit tabs were actually separate from the main sign.
When the DPW changed I-93's exit numbers the first time around (from 25 to 11 at 128/95 during the early 70s); button-copy lettering for the mile and exit numbers were crammed very close together on the older exit tab (due to the tab being originally sized for only the exit number, these tabs had no border outline BTW). When the exit numbers changed again, I believe the old button copy lettering was removed and a new EXIT number sticker was placed in the middle of the tab.
As my faint recall sorta remembers, I think that the sign in the picture may have been barely old enough to date to the mile posting on signs--that is, a replacement of an older sign with identical layout, then when time came for the renumbering and removal of the mile numbers, it was new enough to remain in place and survive subsequent replacements. All the other gore signs at the interchange were less tall at the same time I took the picture (about 5 years ago) and didn't have a patch for the exit number--this sign may have been the last vestige of the renumbering.
I remember the old exit tab design, I think--they were very narrow vertically with a significant space between the tab and the main sign?
Quote from: mightyace on May 21, 2012, 02:15:20 AM
Even though I like sequential numbering, the whole E-W/N-S thing didn't always make sense. As I-81 spends some places going mostly E-W at many points in PA, you had weird things like the PA 61 exits being labeled E-W. IIRC It was 36E for PA 61 South and 36W for PA 61 North.
That's just screwy. No reason the suffixes can't be N-S there. Of course, A-B-C-etc. is the preferred method anyway.
Quote from: 1995hoo on May 21, 2012, 05:43:04 PM
To give another example of a state "borrowing" another state's numbers, the Merritt Parkway in Connecticut is an example of that. Originally the numbers on the Hutchinson River Parkway in New York and the Merritt Parkway were continuous, but over the years New York tweaked its numbers a bit and Connecticut never did, so they no longer match. I believe Exit 27 is the first exit in Connecticut going northbound.
This situation exists as a relic. When the Merritt Parkway opened it was the first time ever in the US that a freeway of any sort crossed a state line. The now-ubiquitous standard of exit numbers resetting at state lines did not exist. Indeed, to the people who planned it out in the late 1930's, it would have seemed only logical to just continue the numbers from New York.
Another relic of exit numbering in Connecticut where modern numbering standards are predated is I-84 with CT8. The two separate exits for each direction are not suffixed S-N or at all. They have two different numbers: 19 and 20.
A few examples of this also used to exist on the Merritt Parkway but all have been eliminated by interchange addition or ramp removal:
- US 7, now old US 7 - originally exits 39 and 40, now exits 40A-B (interchange with US 7 freeway is exits 39A-B)
- CT 58 - originally exits 44 and 45, now exit 44 (formerly an 8 ramp "cloverleaf", now a 4-ramp diamond...ish. There is no exit 45 anymore.)
- CT 25, now CT 111 - originally exits 48 and 49, now exit 48 (old 8-ramp "cloverleaf" converted to diamond and later to SPUI, exit 49 is now for CT 25 freeway)
- CT 8, now CT 110 - originally exits 52 and 53, now exit 53 (7 ramp interchange converted to 5 ramps, exit 52 is now for CT 8 freeway)
Quote from: PurdueBill on May 23, 2012, 08:58:47 PMAs my faint recall sorta remembers, I think that the sign in the picture may have been barely old enough to date to the mile posting on signs--that is, a replacement of an older sign with identical layout, then when time came for the renumbering and removal of the mile numbers, it was new enough to remain in place and survive subsequent replacements. All the other gore signs at the interchange were less tall at the same time I took the picture (about 5 years ago) and didn't have a patch for the exit number--this sign may have been the last vestige of the renumbering.
That being the case that particular sign
can't be any
newer than the early 80s.
The original exit numbers on I-244 in Oklahoma were in the 90s. For some reason, ODOT numbered I-244's exits as if 244 began at the same place I-44 began. The former exit numbers for I-444 were also in the 90s, for the same reason. At the time, I-44 ended northeast of OKC at I-35, and that is where mile marker 0 was. In 1982, I-44 was extended to the Texas line, and the exits were renumbered beginning at the Red River. I-244's exit numbers were changed to where mile 0 was at the Texas line, and I-444 lost its exit numbers. I-244 is just a weird highway.
U304AA
The Exit 51 sequence on the Kennedy Expressway in Chicago skips a few letters in both directions. For example, there's no 51A eastbound, and no 51E, 51F, 51G, 51H or 51I westbound.
Also, on the Alphabet Loop in Kansas City, you won't find an Exit 2I, 2O or 2Z because those letters look like numbers.
- Exit 15X on the New Jersey Turnpike
- The northbound Turnpike jumps from Exit 19W to 68, with 68 being the theoretical mile-based exit if the Somerset Freeway were built
- The Southern State Parkway on LI has a double-suffixed exit, something like ##A-S for a single exit. Some LI parkways have a prefix representing the parkway name. So the Sunken Meadow has Exit SM3A
I-73 seemed to use US 220's exit numbers for a while. Not sure if they have been adjusted, but they went from 95A/B to 78 and then 79, at the interchange with I-40.
Photos from 2015:
(https://live.staticflickr.com/65535/49205687858_4c5b8347c9_b.jpg) (https://flic.kr/p/2hY91GA)
(https://live.staticflickr.com/1827/43511807671_cddded9c4f_b.jpg) (https://flic.kr/p/29hZoux)
Swinging back to Florida's Turnpike...they used Exit 54X on the mainline section to denote the Express Lanes for I-595:
(https://live.staticflickr.com/4523/26805285859_d97687c4ff_b.jpg) (https://flic.kr/p/GQG6B2)
Mentioned up-thread, here's a photo of the Garden State Parkway Exit 155P (since removed):
(https://live.staticflickr.com/1812/28973142007_32a8dc885a_b.jpg) (https://flic.kr/p/L9fVHa)
When I was little, I thought the E and W suffixes used on I-90 in Buffalo were really weird.
Quote from: bugo on September 01, 2020, 01:46:11 AM
The original exit numbers on I-244 in Oklahoma were in the 90s. For some reason, ODOT numbered I-244's exits as if 244 began at the same place I-44 began. The former exit numbers for I-444 were also in the 90s, for the same reason. At the time, I-44 ended northeast of OKC at I-35, and that is where mile marker 0 was. In 1982, I-44 was extended to the Texas line, and the exits were renumbered beginning at the Red River. I-244's exit numbers were changed to where mile 0 was at the Texas line, and I-444 lost its exit numbers. I-244 is just a weird highway.
You're leaving out the most amusing part, which is that I-444 lost its exit
numbers...but not the letters for a couple decades longer! So you had exits A, B, C...and then for whatever reason they missed a sign, so the next exit was 94D.
Then all the signs were replaced and the exit lettering went away too. And at some point I-244 got exit numbers starting at 1. The 2009 MUTCD says that I-444 should get exit numbers again, and starting at 1 the way they always were supposed to...but who knows if that will ever happen?
Quote from: Bickendan on April 17, 2012, 08:47:32 PM
A/AP-7 in Spain. This one really takes the cake.
Since this post was written (before I joined this forum) things have simplified a bit along A-7.
US 7 in the Danbury area has some unusual exit numbers because of the cancellation of the freeway north of New Canaan. Danbury Airport is Exit 7, Park Ave is Exit 8, and I-84 West (NB only) is Exit 9, then you have US 6/202 exit signage which is unnumbered until the exit now signage, which all of a sudden has Exit 4 (an I-84 number). After the I-84 Exits 4-7, the numbering resumes with Exit 10 for I-84 East (SB only). However, before the Brookfield Bypass was built, this was inexplicably numbered Exit 13, despite Exits 11 and 12 (both for Federal Rd, the latter now a full interchange) being north of there. So pre-2009, if you traveled from Brookfield to Ridgefield on US 7, the numbers would go 11, 13, 6, 5, 4, 3, 8, 7.
Quote from: Henry on September 01, 2020, 11:34:15 AM
Also, on the Alphabet Loop in Kansas City, you won't find an Exit 2I, 2O or 2Z because those letters look like numbers.
But they have no problem signing Route Z in dozens of counties.
Quote from: Scott5114 on September 02, 2020, 03:30:59 PM
Quote from: bugo on September 01, 2020, 01:46:11 AM
The original exit numbers on I-244 in Oklahoma were in the 90s. For some reason, ODOT numbered I-244's exits as if 244 began at the same place I-44 began. The former exit numbers for I-444 were also in the 90s, for the same reason. At the time, I-44 ended northeast of OKC at I-35, and that is where mile marker 0 was. In 1982, I-44 was extended to the Texas line, and the exits were renumbered beginning at the Red River. I-244's exit numbers were changed to where mile 0 was at the Texas line, and I-444 lost its exit numbers. I-244 is just a weird highway.
You're leaving out the most amusing part, which is that I-444 lost its exit numbers...but not the letters for a couple decades longer! So you had exits A, B, C...and then for whatever reason they missed a sign, so the next exit was 94D.
Then all the signs were replaced and the exit lettering went away too. And at some point I-244 got exit numbers starting at 1. The 2009 MUTCD says that I-444 should get exit numbers again, and starting at 1 the way they always were supposed to...but who knows if that will ever happen?
It will happen when ODOT decides to sign 444 and remove it from hidden status.
I-49 in Arkansas has two Exit 24s. One is at CR 10 in Miller County, while the other is at AR 252 in Crawford County. The reason there are two interchanges with the same number is because the mileage of the southern section of I-49 starts at the Louisiana line. The northern section was originally I-540 from I-40 to the northern US 62 interchange. I-540's mileage once began at I-40 and increased as you went west (south). AHTD submitted an application to AASHTO in 1997 for this section to be signed as I-49, but AASHTO denied it so they made the boneheaded decision to extend I-540 north to exit 86 instead of coming up with a different number. The original (and current) I-540 was signed east-west, but when the highway was extended, it was signed north-south. They changed the mileage so it would begin at the Oklahoma line instead and would increase as you go north. I-40 had an overlap with I-540, but it was only partially signed. I-540 at the Oklahoma line is mile zero for the northern section of I-49. Eventually, they will likely renumber the northern section, but likely not until the final route between Alma and Texarkana is decided upon.
Quote from: bugo on September 09, 2020, 07:37:19 AM
Quote from: Henry on September 01, 2020, 11:34:15 AM
Also, on the Alphabet Loop in Kansas City, you won't find an Exit 2I, 2O or 2Z because those letters look like numbers.
But they have no problem signing Route Z in dozens of counties.
There are plenty of O's, too. Closest you'll get to a Route 0.
Quote from: US 89 on September 09, 2020, 01:43:30 PM
Quote from: bugo on September 09, 2020, 07:37:19 AM
Quote from: Henry on September 01, 2020, 11:34:15 AM
Also, on the Alphabet Loop in Kansas City, you won't find an Exit 2I, 2O or 2Z because those letters look like numbers.
But they have no problem signing Route Z in dozens of counties.
There are plenty of O's, too. Closest you'll get to a Route 0.
Yet they won't sign G, Q, S, or X as supplementals, but they're okay for exit numbers. MoDOT, man.
CA 126 in Castaic has the exit for Commerce Center Drive signed as Exit 13, despite it being near its eastern terminus (which should make it Exit 39). This is most likely because the last signed exit number on 126 is in Santa Paula, Exit 12.
CA 86 in the Coachella Valley has a lone Exit 16 gore-point sign at Airport Blvd despite it being well north of the southern terminus in the Imperial Valley. I'm assuming it's because the exit number follows the Riverside County mileposts.
Quote from: bugo on September 09, 2020, 10:53:36 AM
I-49 in Arkansas has two Exit 24s. One is at CR 10 in Miller County, while the other is at AR 252 in Crawford County. The reason there are two interchanges with the same number is because the mileage of the southern section of I-49 starts at the Louisiana line. The northern section was originally I-540 from I-40 to the northern US 62 interchange. I-540's mileage once began at I-40 and increased as you went west (south). AHTD submitted an application to AASHTO in 1997 for this section to be signed as I-49, but AASHTO denied it so they made the boneheaded decision to extend I-540 north to exit 86 instead of coming up with a different number. The original (and current) I-540 was signed east-west, but when the highway was extended, it was signed north-south. They changed the mileage so it would begin at the Oklahoma line instead and would increase as you go north. I-40 had an overlap with I-540, but it was only partially signed. I-540 at the Oklahoma line is mile zero for the northern section of I-49. Eventually, they will likely renumber the northern section, but likely not until the final route between Alma and Texarkana is decided upon.
I'm betting they will renumber it by the time the Bella Vista Bypass is fully open. Reason is because the segment that is open as AR-549 already has exit numbers in the 280's.
Exit 99 in I-10 in Banning CA is 22nd Street, meets Ramsey Street (former US route 99, along with 60-70). A lot of numbers circling in my mind (sees numbers in front of my eyes). It should be 99 miles from the Pacific Ocean in Santa Monica where the from West to East exit number system starts. There's a mini mart gas station (is it still an ARCO AM-PM?) for a pit stop.
Meadowbrook Parkway in Long Island: https://goo.gl/maps/fdZ3ShKYagqLGt8T7
(https://i.ibb.co/yhNKkp8/image.png) (https://ibb.co/4sFCS2j)
Didn't the Niagara Thruway used to have N prefix numbering at one time?
Quote from: Dustin DeWinn on October 26, 2020, 05:20:56 PM
Meadowbrook Parkway in Long Island: https://goo.gl/maps/fdZ3ShKYagqLGt8T7
Exit M6W for SO! Or is it 50 or 5O (Five O!)?
(See Alphabet loop not using O supposedly because it could be confused for 0. 5 and S adjacent to 0 or O makes for fun if people aren't aware of the Parkway lettered shields, similar to the county lettered routes.)
Quote from: roadman65 on October 27, 2020, 04:36:18 PM
Didn't the Niagara Thruway used to have N prefix numbering at one time?
Yes.
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fjpnearl.com%2Fupstatenyroads.com%2Fbackup%2Fassets%2FoldExitn7nb-1.jpg&hash=798a0132b78aa128255afc1f00edfc29da32bc8a)
Quote from: PurdueBill on October 27, 2020, 09:54:18 PM
Quote from: Dustin DeWinn on October 26, 2020, 05:20:56 PM
Meadowbrook Parkway in Long Island: https://goo.gl/maps/fdZ3ShKYagqLGt8T7
Exit M6W for SO! Or is it 50 or 5O (Five O!)?
(See Alphabet loop not using O supposedly because it could be confused for 0. 5 and S adjacent to 0 or O makes for fun if people aren't aware of the Parkway lettered shields, similar to the county lettered routes.)
Québec actually does use O regularly for linguistic reasons (they use directional suffixes), but they also use hyphens for suffixes (https://www.google.com/maps/@45.4706316,-73.7031971,3a,75y,322.82h,104.41t/data=!3m6!1e1!3m4!1s0KBURYhoJT677ZFteeWdpQ!2e0!7i16384!8i8192), so there's no chance of 30 and 3-O being confused like there would be with 30 and 3O.
Quote from: vdeane on October 28, 2020, 08:29:28 PM
Quote from: PurdueBill on October 27, 2020, 09:54:18 PM
Quote from: Dustin DeWinn on October 26, 2020, 05:20:56 PM
Meadowbrook Parkway in Long Island: https://goo.gl/maps/fdZ3ShKYagqLGt8T7
Exit M6W for SO! Or is it 50 or 5O (Five O!)?
(See Alphabet loop not using O supposedly because it could be confused for 0. 5 and S adjacent to 0 or O makes for fun if people aren't aware of the Parkway lettered shields, similar to the county lettered routes.)
Québec actually does use O regularly for linguistic reasons (they use directional suffixes), but they also use hyphens for suffixes (https://www.google.com/maps/@45.4706316,-73.7031971,3a,75y,322.82h,104.41t/data=!3m6!1e1!3m4!1s0KBURYhoJT677ZFteeWdpQ!2e0!7i16384!8i8192), so there's no chance of 30 and 3-O being confused like there would be with 30 and 3O.
I always thought that was awesome...wonder why a hyphen/dash never really caught on for lettered exits in the USA. It is occasionally seen on one-off signs but is nonstandard; for a long time the numerals and letters were squashed together but only recently have they said that they should be spaced (e.g., 37A vs. 37 A).
The only directional suffixes (suffices?) I ever saw in Michigan may have been an error. It was on the M-10 Lodge Freeway's partial interchange at Southfield Road/Freeway when signs were replaced as part of the M-10 reconstruction in 2007. The N (northbound) and S (southbound) suffixes lasted until only a week or so after the freeway was reopened, to be replaced with 14C in both directions.
(https://i.imgur.com/0nVKQgu.jpg)