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Author Topic: Connecticut milepost exit numbering conversion  (Read 22621 times)

The Ghostbuster

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Connecticut milepost exit numbering conversion
« on: April 20, 2023, 06:06:49 PM »

Since no one else has initiated a "Connecticut milepost exit numbering conversion" thread, I thought I would be the one to take a stab at doing so. Have at it!
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shadyjay

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Re: Connecticut milepost exit numbering conversion
« Reply #1 on: April 21, 2023, 04:59:24 PM »

State & US Route Expressways:

CT 2                 Sign replacement underway, conversion to mile-based exits sometime in 2023-2024
US 6                 Willimantic section:  Sign replacement contract in design, to go out to bid 2024.  Most likely won't see mile-based numbers until 2025 at the earliest.
US 7                 TBD
CT 8                 Sign modification, conversion to mile-based exits, 2023-2024
CT 9                 Converted to mile-based exits, January 2023.  All signs replaced.
CT 11               Sign replacement underway, conversion to mile-based exits sometime in 2023
CT 15               TBD
CT 17               Middletown area:  Mile-based exits added Jan 2023;   Glastonbury:  Sign replacement underway, conversion to mile-based exits sometime in 2023-2024
CT 20               TBD
CT 25               TBD
CT 40               Sign replacement underway, conversion to mile-based exits sometime in 2023-2024
CT 72               Converted to mile-based exits Spring 2023;  Signs replaced
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Ted$8roadFan

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Re: Connecticut milepost exit numbering conversion
« Reply #2 on: April 21, 2023, 05:37:53 PM »

Any word on the interstates?
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shadyjay

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Re: Connecticut milepost exit numbering conversion
« Reply #3 on: April 21, 2023, 06:15:11 PM »

Any word on the interstates?

Interstates:

I-84                   TBD
I-91                   TBD
I-95                   TBD
I-384                 Contract to be let for sign replacement & mile based exits in 2024.  Most likely no new exit #s until 2025 at the earliest.
I-291                 TBD
I-691                 Exit numbers slated for conversion to mile-based, late April 2023.  Complete sign replacement also forthcoming during 2023.
I-395                 Already converted to mile-based exits. 
(SSR 695)          Already converted to mile-based exits.
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abqtraveler

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Re: Connecticut milepost exit numbering conversion
« Reply #4 on: April 21, 2023, 06:15:59 PM »

State & US Route Expressways:

CT 2                 Sign replacement underway, conversion to mile-based exits sometime in 2023-2024
US 6                 Willimantic section:  Sign replacement contract in design, to go out to bid 2024.  Most likely won't see mile-based numbers until 2025 at the earliest.
US 7                 TBD
CT 8                 Sign modification, conversion to mile-based exits, 2023-2024
CT 9                 Converted to mile-based exits, January 2023.  All signs replaced.
CT 11               Sign replacement underway, conversion to mile-based exits sometime in 2023
CT 15               TBD
CT 17               Middletown area:  Mile-based exits added Jan 2023;   Glastonbury:  Sign replacement underway, conversion to mile-based exits sometime in 2023-2024
CT 20               TBD
CT 25               TBD
CT 40               Sign replacement underway, conversion to mile-based exits sometime in 2023-2024
CT 72               Converted to mile-based exits Spring 2023;  Signs replaced
My guess is they will do the Danbury/Brookfield section of US-7 when they renumber exits on I-84. Similarly, if I were a betting man, I would think they would renumber exits on the Norwalk segment of US-7 when I-95 exit numbers are changed. 

For Route 25, I think everyone was thinking they would be renumbered with Route 8, but apparently that's not happening per the plans included in the Route 8 exit renumbering contract.  Perhaps CTDOT might issue a contract modification to include renumbering Route 25 north of the Route 8 split, but I haven't seen anything to this effect as of yet.
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MikeTheActuary

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Re: Connecticut milepost exit numbering conversion
« Reply #5 on: April 21, 2023, 06:51:19 PM »

State & US Route Expressways:

You missed one:  CT 2A has already converted
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jp the roadgeek

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Re: Connecticut milepost exit numbering conversion
« Reply #6 on: April 21, 2023, 09:20:58 PM »

Other minor routes with added numbers that are mileage based:

CT 82
CT 349
SR 571

SR 796 (Milford Connector) had numbers added a few years ago, but I don’t see them changing for such a short stretch.

Don’t know if the couple of exits on 187/189 will get numbers. 
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Re: Connecticut milepost exit numbering conversion
« Reply #7 on: April 21, 2023, 10:34:36 PM »

From CONNDOT:

Quote
Frequently Asked Questions

Q: Why are the exits being renumbered?
A: The exits are being renumbered to conform to Federal standards. Reference location (mileage) based exit numbering is a requirement of the MUTCD (Manual on Uniform Traffic Control Devices), Section 2E.31, published by the Federal Highway Administration. The MUTCD is the national standard and is adopted by reference in the Federal Code of Regulations Title 23: Highways Part 655.603.

Q: What are the benefits to a mileage-based exit numbering system?
A: - National Uniformity Same exit numbering system as almost every other state. - Driver friendly navigation Allows drivers to quickly determine distances to destinations Easier to calculate miles traveled - More accurate emergency response Improves reporting of highway incidents, resulting in better navigation of emergency services - Easier to add future exits without renumbering entire corridor

Q: Which highways will get new exit numbers?
A: All limited access roadways within the State will be renumbered to mileage-based numbering as required by the Federal Highway Administration.

Q: When will new signs be installed on my route?
A: New exit numbers will be provided when signs are replaced in corridor sign projects. Projects are programmed based on need when signs reach or exceed their useful service life. The list below includes major routes only and the year is the approximate construction completion year. Please note that the schedule is subject to change.

- CT-2: 2024 (Currently in Construction — State Project 0172-0490)
- CT-8: 2025
- CT-9: 2022 (Currently in Construction — State Projects 0007-0189/0171-0425 & 0172-0473)
- CT-15: 2025
- I-84: 2028
- I-91: 2027
- I-95: 2029
- I-291: 2025
- I-384: 2026
- I-395: Completed 2015
- I-691: 2023 (Currently in Construction — State Project 0079-0244)

Q: Will there be an Exit 0?
A: No. The Federal Highway Administration allows Exit 0 but does not require its use. CTDOT
has decided not to use Exit 0 to reduce potential confusion.

Q: How are the new exit numbers determined?
A: Exit numbers will be determined based on the mileage contained in the CTDOT Linear
Referencing System. Mileage typically runs from south to north and west to east.
- No Exit 0
- Mileage 0.00 — 1.49 = Exit 1
- Mileage 1.50 — 2.99 = Exit 2
- Mileage 3.00 — 3.99 and beyond.
+ Round down to the nearest whole mile
- In some cases, the CTDOT may round up or down to the next nearest whole mile to reduce
suffix letters or utilize the existing exit number.
- Splits on off-ramps will not be designated as separate numbers/suffix letters.

Q: Will there be any traffic impacts?
A: We anticipate minimal impact to traffic during construction. The public will be notified in
advance of construction start and CTDOT will use electronic changeable message signs to alert
motorists of lane closures during construction.

Q: How will the program be paid for?
A: The exit numbers will be revised as a component of corridor sign replacement projects.
Renumbering will be implemented over the course of the next 10 years and be paid for by a
mixture of State and Federal funds.

Q: What is CTDOT doing to notify the public of this conversion?
A: The Department issues a press release during the design of the corridor sign replacement
project and at the beginning of the construction phase of the project. The Department also
reaches out to the municipalities directly impacted by the numbering change during the design
process. This communication is to allow the municipality to inform local business and
emergency services of the upcoming change.

Q: How will this impact businesses?
A: “Old Exit #”  signs will be installed and remain in place for a minimum of 2 years, providing
businesses with time to adjust to the new exit numbers and update advertising materials.

Q: What will the new exit signs look like?
A: Exit sign panels will look the same, just the numbers themselves will change. “Old Exit #”
signs, which will have a green background with white lettering, will be installed at key locations
for a minimum of 2 years.

Q: How can I submit my questions?
A: All inquiries relating to exit numbering should be sent to DOT.TrafficEngineering@ct.gov with
the subject line Exit Numbering.

https://portal.ct.gov/DOT/Traffic-Engineering/Exit-Renumbering
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jp the roadgeek

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Re: Connecticut milepost exit numbering conversion
« Reply #8 on: April 23, 2023, 01:08:17 PM »

Looks like CTDOT finally updated the map for exits, adding I-691, along with the recently announced I-384 and US 6.  But wait, there's more: I-291, and the whole CT 2/3/11/Glastonbury 17 exits project.

I-691 looks like this (the 66 Exits are both Exit 1)

Exit 11 > Exit 1A
Exit 10 > Exit 1B
Exit 9 > Exit 1C
Exit 8 > Exit 2A
Exit 7 > Exit 2B
Exits 6 + 5 > Exit 3
Exit 4 > Exit 5
Exit 3 > Exit 7
Exit 2 > Exit 8A
Exit 1 > Exit 8B

UPDATE: 691 East is done already.  Got on at old Exit 4 and this was the next sign I saw:


They’ll probably do westbound tonight, as a backward glance saw the old numbers still up
« Last Edit: April 23, 2023, 06:40:02 PM by jp the roadgeek »
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shadyjay

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Re: Connecticut milepost exit numbering conversion
« Reply #9 on: April 24, 2023, 05:37:51 PM »

I-691 West is done... drove it today. 

Since I-691 was done in 2 nights and done with overlays (since the signs are getting replaced this year anyway), there's no reason why ConnDOT couldn't do what Mass did and overlay new exit numbers on each of the state's highways and get the whole state converted in a year (or less).  Granted there's a lot of overheads to change, but when Mass changed, all of their primary guide signs are all overhead.  And there's only one road where 3-digit numbers would be used, but that would only require replacing exit tabs for 3 or 4 exits. 

I bet if they really wanted to, they could get I-84, I-91, and I-95 fully converted over in a month each.  And maybe even less time for I-95 if they don't mess with the numbers west of New Haven. 
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Re: Connecticut milepost exit numbering conversion
« Reply #10 on: April 24, 2023, 08:35:18 PM »

I-691 West is done... drove it today. 

Since I-691 was done in 2 nights and done with overlays (since the signs are getting replaced this year anyway), there's no reason why ConnDOT couldn't do what Mass did and overlay new exit numbers on each of the state's highways and get the whole state converted in a year (or less).  Granted there's a lot of overheads to change, but when Mass changed, all of their primary guide signs are all overhead.  And there's only one road where 3-digit numbers would be used, but that would only require replacing exit tabs for 3 or 4 exits. 

I bet if they really wanted to, they could get I-84, I-91, and I-95 fully converted over in a month each.  And maybe even less time for I-95 if they don't mess with the numbers west of New Haven. 
And despite everything, they're still on track to finish before Vermont even begins (not going to comment on NH because they're dependent on how long the exit 3 kid remains governor).
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The Ghostbuster

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Re: Connecticut milepost exit numbering conversion
« Reply #11 on: April 24, 2023, 08:36:13 PM »

Or New Hampshire. Or Delaware.
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Rothman

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Re: Connecticut milepost exit numbering conversion
« Reply #12 on: April 24, 2023, 08:44:05 PM »

I-691 West is done... drove it today. 

Since I-691 was done in 2 nights and done with overlays (since the signs are getting replaced this year anyway), there's no reason why ConnDOT couldn't do what Mass did and overlay new exit numbers on each of the state's highways and get the whole state converted in a year (or less).  Granted there's a lot of overheads to change, but when Mass changed, all of their primary guide signs are all overhead.  And there's only one road where 3-digit numbers would be used, but that would only require replacing exit tabs for 3 or 4 exits. 

I bet if they really wanted to, they could get I-84, I-91, and I-95 fully converted over in a month each.  And maybe even less time for I-95 if they don't mess with the numbers west of New Haven. 
And despite everything, they're still on track to finish before Vermont even begins (not going to comment on NH because they're dependent on how long the exit 3 kid remains governor).
VT skillfully delayed things with the mileage banners they added to their advance guide signs.
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jp the roadgeek

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Re: Connecticut milepost exit numbering conversion
« Reply #13 on: April 25, 2023, 01:11:19 AM »

I-691 West is done... drove it today. 

Since I-691 was done in 2 nights and done with overlays (since the signs are getting replaced this year anyway), there's no reason why ConnDOT couldn't do what Mass did and overlay new exit numbers on each of the state's highways and get the whole state converted in a year (or less).  Granted there's a lot of overheads to change, but when Mass changed, all of their primary guide signs are all overhead.  And there's only one road where 3-digit numbers would be used, but that would only require replacing exit tabs for 3 or 4 exits. 

I bet if they really wanted to, they could get I-84, I-91, and I-95 fully converted over in a month each.  And maybe even less time for I-95 if they don't mess with the numbers west of New Haven.

95 west of New Haven will need some adjustments, the major ones being between Westport and the Milford Connector (won't even need to touch 5-16, 38-41, or 46-48).  The minor ones: In Greenwich, Exits 2-4 each get lowered by 1.  Between the Milford Connector and I-91, 42-44 each get adjusted up by 1 (in the case of 44, it would be fudged down from 46 to 45 so that 46-48 could remain unchanged). Between Westport and Milford:

17 becomes 18
18 becomes 20
19 becomes 22
20 (SB ONLY) becomes 23
21 becomes 24
22 becomes 25A
23 becomes 25B
24 becomes 26
25 becomes 27
26 becomes 28
27 (NB) and 27B (SB) become 29A
27A becomes 29B (and puts 8 before 25 on the signage)
28 (NB) and 27C (SB) become 29C
29-36: Each get adjusted up by 1.  NB 36 becomes 37A to accommodate current 37 as 37B. 

The real meat of the 95 renumbering begins north of Exit 56, but current 50-54 would each need to be lowered by 1 (current 52, which is SB only, is fudged up to 51 to use the number)
« Last Edit: April 25, 2023, 01:21:27 AM by jp the roadgeek »
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abqtraveler

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Re: Connecticut milepost exit numbering conversion
« Reply #14 on: April 25, 2023, 09:48:39 AM »

I-691 West is done... drove it today. 

Since I-691 was done in 2 nights and done with overlays (since the signs are getting replaced this year anyway), there's no reason why ConnDOT couldn't do what Mass did and overlay new exit numbers on each of the state's highways and get the whole state converted in a year (or less).  Granted there's a lot of overheads to change, but when Mass changed, all of their primary guide signs are all overhead.  And there's only one road where 3-digit numbers would be used, but that would only require replacing exit tabs for 3 or 4 exits. 

I bet if they really wanted to, they could get I-84, I-91, and I-95 fully converted over in a month each.  And maybe even less time for I-95 if they don't mess with the numbers west of New Haven.
Remember that Connecticut is converting their exit numbers reluctantly, so they're looking for any opportunity to slow-roll their conversion. The FHWA is allowing CTDOT to push off exit renumbering until signs need replacing, and CTDOT is taking full advantage of that.
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Re: Connecticut milepost exit numbering conversion
« Reply #15 on: April 25, 2023, 10:02:28 AM »

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jp the roadgeek

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Re: Connecticut milepost exit numbering conversion
« Reply #16 on: April 25, 2023, 10:26:02 AM »

New enhanced mileposts were completed over the weekend on CT 72.  Saw a new enhanced MP 3 EB by the Exit 2 sign as I drove by on 84 East.  I'll have to check out the rest west of 84. 

UPDATE: All done.  No MP between MP 3 and MP 4 for the 84 overlap.  WB’s last marker is MP 6, while there’s a 6.2 on the EB side.
« Last Edit: April 25, 2023, 06:18:58 PM by jp the roadgeek »
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CtrlAltDel

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Re: Connecticut milepost exit numbering conversion
« Reply #17 on: April 25, 2023, 11:08:35 AM »

Quote
Frequently Asked Questions
Q: How are the new exit numbers determined?

A: Exit numbers will be determined based on the mileage contained in the CTDOT Linear
Referencing System. Mileage typically runs from south to north and west to east.
- No Exit 0
- Mileage 0.00 — 1.49 = Exit 1
- Mileage 1.50 — 2.99 = Exit 2
- Mileage 3.00 — 3.99 and beyond.
+ Round down to the nearest whole mile

This seems like a weird system to me. I know that when California did its exit numbers, it also avoided Exit 0, but rounds at the .5 mark throughout and not just between miles 1 and 2.
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Re: Connecticut milepost exit numbering conversion
« Reply #18 on: April 25, 2023, 12:58:08 PM »

Or New Hampshire. Or Delaware.
Or NY.
NY has converted a few roads (I-84, the Hutch, I-99), roads newly getting exit numbers are mile-based (the Taconic, I-781), there's the old experiments (I-890/NY 890, the NYSDOT portion of I-95), and the roads affected by the I-81 removal are going mile-based (I-690/presumably NY 690 as well, I-81, BL 81, NY 481).  I presume more will happen as signs are replaced, but much of the state isn't doing corridor-based sign rehabs like CT is right now, so it could be a while (although Region 8 seems to do them more than most... that's how I-84, the Hutch, and the Taconic all went mile-based).
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Re: Connecticut milepost exit numbering conversion
« Reply #19 on: April 25, 2023, 04:36:12 PM »

I-691 West is done... drove it today. 

Since I-691 was done in 2 nights and done with overlays (since the signs are getting replaced this year anyway), there's no reason why ConnDOT couldn't do what Mass did and overlay new exit numbers on each of the state's highways and get the whole state converted in a year (or less).  Granted there's a lot of overheads to change, but when Mass changed, all of their primary guide signs are all overhead.  And there's only one road where 3-digit numbers would be used, but that would only require replacing exit tabs for 3 or 4 exits. 

I bet if they really wanted to, they could get I-84, I-91, and I-95 fully converted over in a month each.  And maybe even less time for I-95 if they don't mess with the numbers west of New Haven.
Remember that Connecticut is converting their exit numbers reluctantly, so they're looking for any opportunity to slow-roll their conversion. The FHWA is allowing CTDOT to push off exit renumbering until signs need replacing, and CTDOT is taking full advantage of that.
Button copy is a historic resource so it does not need to ever be replaced
please back me up on this

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Re: Connecticut milepost exit numbering conversion
« Reply #20 on: April 25, 2023, 06:41:51 PM »

I-691 West is done... drove it today. 

Since I-691 was done in 2 nights and done with overlays (since the signs are getting replaced this year anyway), there's no reason why ConnDOT couldn't do what Mass did and overlay new exit numbers on each of the state's highways and get the whole state converted in a year (or less).  Granted there's a lot of overheads to change, but when Mass changed, all of their primary guide signs are all overhead.  And there's only one road where 3-digit numbers would be used, but that would only require replacing exit tabs for 3 or 4 exits. 

I bet if they really wanted to, they could get I-84, I-91, and I-95 fully converted over in a month each.  And maybe even less time for I-95 if they don't mess with the numbers west of New Haven.
Remember that Connecticut is converting their exit numbers reluctantly, so they're looking for any opportunity to slow-roll their conversion. The FHWA is allowing CTDOT to push off exit renumbering until signs need replacing, and CTDOT is taking full advantage of that.
Button copy is a historic resource so it does not need to ever be replaced
please back me up on this
Especially if it's on the Merritt Parkway. The Merritt Parkway Conservancy will have its best and brightest trial lawyers lined up to fight the replacement of any highway signs it deems historical. :)
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2-d Interstates traveled:  4, 5, 8, 10, 15, 20, 24, 25, 27, 29, 35, 39, 40, 41, 43, 45, 49, 55, 57, 64, 65, 66, 69, 70, 71, 72, 74, 75, 76(E), 77, 78, 81, 83, 84(W), 85, 87(N), 89, 90, 91, 93, 94, 95

2-d Interstates Clinched:  12, 22, 30, 37, 44, 59, 80, 84(E), 86(E), 238, H1, H2, H3, H201

The Ghostbuster

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Re: Connecticut milepost exit numbering conversion
« Reply #21 on: April 25, 2023, 06:54:58 PM »

How hard do any of you think they will fight to keep the exits from being renumbered? Will it be like US 6 on Cape Cod all over again?
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abqtraveler

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Re: Connecticut milepost exit numbering conversion
« Reply #22 on: April 26, 2023, 12:27:06 PM »

Just checked Google Maps this morning, and it appears they have updated interchange numbers on Routes 9 and 72 to reflect the recent changeover to mile-based exit numbers on those routes.
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2-d Interstates traveled:  4, 5, 8, 10, 15, 20, 24, 25, 27, 29, 35, 39, 40, 41, 43, 45, 49, 55, 57, 64, 65, 66, 69, 70, 71, 72, 74, 75, 76(E), 77, 78, 81, 83, 84(W), 85, 87(N), 89, 90, 91, 93, 94, 95

2-d Interstates Clinched:  12, 22, 30, 37, 44, 59, 80, 84(E), 86(E), 238, H1, H2, H3, H201

The Ghostbuster

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Re: Connecticut milepost exit numbering conversion
« Reply #23 on: April 26, 2023, 04:04:37 PM »

I've noticed that too!
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Ted$8roadFan

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Re: Connecticut milepost exit numbering conversion
« Reply #24 on: April 26, 2023, 06:39:55 PM »

How hard do any of you think they will fight to keep the exits from being renumbered? Will it be like US 6 on Cape Cod all over again?

I wouldn’t be surprised at all if they did fight the renumbering like Cape Codders have done.
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