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National Boards => General Highway Talk => Topic started by: Ned Weasel on August 11, 2020, 07:19:12 AM

Title: At-Grade Intersections with Exit Numbers
Post by: Ned Weasel on August 11, 2020, 07:19:12 AM
This thread: https://www.aaroads.com/forum/index.php?topic=27394.0 , along with a discussion last night about sharp-turn exits from freeways, got me thinking about something.  How common is it to have exit numbers for at-grade intersections, whether they're on Interstates or not?  Most of us know that the Garden State Parkway used to have a few of these toward the southern end, but I'm not sure if any remain besides Exit 0: https://goo.gl/maps/WeGJcZ6yRzA1mcEU6

But then, you have the occasional at-grade intersection on an Interstate highway, whether it's RIRO or allows cross-traffic.  Exit 106 on I-25 in Colorado is a pair of RIRO T-intersections: https://goo.gl/maps/YWryP7uXmsk9u2z78 , https://goo.gl/maps/stVdZ1B9y64gTgeb9 , https://goo.gl/maps/xcff2rSQwzr53Jcz9 , https://goo.gl/maps/ZFBAYfn7xPGaXPXKA (not sure what happened to the camera here).

What others can we add to the list?
Title: Re: At-Grade Intersections with Exit Numbers
Post by: ozarkman417 on August 11, 2020, 07:25:28 AM
The north end of I 35 has one with MN 61

SM-G965U

Title: Re: At-Grade Intersections with Exit Numbers
Post by: hotdogPi on August 11, 2020, 07:36:03 AM
Exit 5C at the end of the Lowell Connector
Title: Re: At-Grade Intersections with Exit Numbers
Post by: Ned Weasel on August 11, 2020, 08:30:47 AM
Oh, I forgot some!  Some of those goofy, blue-signed exits on US 69 in McAlester, Oklahoma are merely at-grade turns:

https://goo.gl/maps/Vv72qkANj8uZPkoJ7
https://goo.gl/maps/wm3yX4dixYooiKa76
https://goo.gl/maps/u4tjAm6kKRMUk1bn6
Title: Re: At-Grade Intersections with Exit Numbers
Post by: 1995hoo on August 11, 2020, 08:51:19 AM
Nova Scotia has a fair number of these on some of the 100-series highways (the one I particularly recall is NS-103 heading east out of Yarmouth parallel to the smaller roads that make up the Lighthouse Route tourist drive, but that route is not unique in the province in this respect). Here's an example: https://goo.gl/maps/hTvX4ckGQfPQ3gRE6 (the "exit" is where that car is coming from the left up ahead).

Note that while in the above-referenced example the left-aligned exit tab complies with the convention with which most of us are familiar, it seems like Nova Scotia left-aligns all exit tabs regardless of where the exit is and the type of road. Consider this one on NS-103 for a crossroads near Shelburne (https://goo.gl/maps/hHySUC6ejgCaG6RA7) or this one on a freeway-grade section of NS-104 (https://goo.gl/maps/rPHNU96sXr585LcMA).
Title: Re: At-Grade Intersections with Exit Numbers
Post by: jmacswimmer on August 11, 2020, 08:54:55 AM
I-83's southern terminus at Fayette St in Baltimore is signed as "exit 1" (https://www.google.com/maps/@39.2969343,-76.6112922,3a,44.5y,174.32h,91.71t/data=!3m6!1e1!3m4!1s6FgyGlqullyXWZJTIkrjXQ!2e0!7i16384!8i8192!5m1!1e1?hl=en).
Title: Re: At-Grade Intersections with Exit Numbers
Post by: zachary_amaryllis on August 11, 2020, 08:59:23 AM
Quote from: stridentweasel on August 11, 2020, 07:19:12 AM
But then, you have the occasional at-grade intersection on an Interstate highway, whether it's RIRO or allows cross-traffic.  Exit 106 on I-25 in Colorado is a pair of RIRO T-intersections: https://goo.gl/maps/YWryP7uXmsk9u2z78 , https://goo.gl/maps/stVdZ1B9y64gTgeb9 , https://goo.gl/maps/xcff2rSQwzr53Jcz9 , https://goo.gl/maps/ZFBAYfn7xPGaXPXKA (not sure what happened to the camera here).

this isn't far from where i live. but that is absolutely bananas.. seems like a terrible idea, since we know no-one ever speeds in this area.
Title: Re: At-Grade Intersections with Exit Numbers
Post by: Ned Weasel on August 11, 2020, 10:27:54 AM
Quote from: 1995hoo on August 11, 2020, 08:51:19 AM
Note that while in the above-referenced example the left-aligned exit tab complies with the convention with which most of us are familiar, it seems like Nova Scotia left-aligns all exit tabs regardless of where the exit is and the type of road. Consider this one on NS-103 for a crossroads near Shelburne (https://goo.gl/maps/hHySUC6ejgCaG6RA7)

That one should be center-aligned, if it really needs an exit number.

Quoteor this one on a freeway-grade section of NS-104 (https://goo.gl/maps/rPHNU96sXr585LcMA).

Kansas used to do that a lot.  I'm glad they stopped.
Title: Re: At-Grade Intersections with Exit Numbers
Post by: NWI_Irish96 on August 11, 2020, 10:29:35 AM
Quote from: ozarkman417 on August 11, 2020, 07:25:28 AM
The north end of I 35 has one with MN 61

SM-G965U



The north end of I-65 does not, so apparently there is no set standard.
Title: Re: At-Grade Intersections with Exit Numbers
Post by: 1995hoo on August 11, 2020, 10:58:21 AM
Quote from: stridentweasel on August 11, 2020, 10:27:54 AM
Quote from: 1995hoo on August 11, 2020, 08:51:19 AM
Note that while in the above-referenced example the left-aligned exit tab complies with the convention with which most of us are familiar, it seems like Nova Scotia left-aligns all exit tabs regardless of where the exit is and the type of road. Consider this one on NS-103 for a crossroads near Shelburne (https://goo.gl/maps/hHySUC6ejgCaG6RA7)

That one should be center-aligned, if it really needs an exit number.

....

I don't know about "should." I don't know what, if any, standard Canada has for that sort of thing.
Title: Re: At-Grade Intersections with Exit Numbers
Post by: texaskdog on August 11, 2020, 11:00:20 AM
lots of them on I-90 in south Dakota & Montana & wyoming
Title: Re: At-Grade Intersections with Exit Numbers
Post by: jp the roadgeek on August 11, 2020, 11:05:38 AM
MA 140 Exit 1 (current and future)
Title: Re: At-Grade Intersections with Exit Numbers
Post by: Ned Weasel on August 11, 2020, 11:07:16 AM
Quote from: texaskdog on August 11, 2020, 11:00:20 AM
lots of them on I-90 in south Dakota & Montana & wyoming

Are those at-grade intersections, or are they normal exits where the only thing signed is the exit number?
Title: Re: At-Grade Intersections with Exit Numbers
Post by: crispy93 on August 11, 2020, 11:52:47 AM
The West Side Highway (NY 9A) in Manhattan signs several intersections with exit numbers: https://goo.gl/maps/VEyLdThyRwUsP5AX9

And there are some at-grade intersections on the Saw Mill River Parkway in lower Westchester, NY that have the same (bonus LEFT exit tab): https://goo.gl/maps/PqzDDqLtV7ZnnuAA9
Title: Re: At-Grade Intersections with Exit Numbers
Post by: jmacswimmer on August 11, 2020, 12:08:21 PM
Almost forgot this one: I-70 exit 147 in PA (https://www.google.com/maps/@39.9771567,-78.244859,3a,75y,14.81h,89.07t/data=!3m6!1e1!3m4!1sMpvtdAkC3jM9iHy45F3gnQ!2e0!7i16384!8i8192!5m1!1e1?hl=en)!
Title: Re: At-Grade Intersections with Exit Numbers
Post by: Mccojm on August 11, 2020, 12:20:05 PM
Not sure if this meets the topic at question but here's my example.

EB I-495 Long Island Expressway Eastern Terminus in Calverton/ Riverhead NY is signed as Exit 73 even though the expressway essentially just squeezes down to one lane and merges into CR-58.
https://goo.gl/maps/hQPyJXhiCS2h2FPJ8 (https://goo.gl/maps/hQPyJXhiCS2h2FPJ8)

Here's an at grade intersection at NY-347 & NY-111 in Smithtown NY. There's no exit number but there exit tab for N-S as there's a connecting ramp for all turns onto 111 to avoid turn movements at main intersection of 111/347. There a similar sign in opposite direction as well.
https://goo.gl/maps/9dvPrp83DQbb78268 (https://goo.gl/maps/9dvPrp83DQbb78268)


Title: Re: At-Grade Intersections with Exit Numbers
Post by: kurumi on August 11, 2020, 12:40:46 PM
In Norwich, CT 2 exit 26 at Yantic Lane was at-grade. This was eliminated when the 2/32 interchange area was reconstructed in 2001.
Title: Re: At-Grade Intersections with Exit Numbers
Post by: hbelkins on August 11, 2020, 01:33:06 PM
Can't recall off the top of my head, but didn't the at-grade portions of NY 17 between the Thruway and Binghamton have exit numbers?
Title: Re: At-Grade Intersections with Exit Numbers
Post by: Eth on August 11, 2020, 02:53:25 PM
I vaguely recall this being the case on US 98 (maybe US 98 Business?) in Panama City, FL back in the '90s.
Title: Re: At-Grade Intersections with Exit Numbers
Post by: TheHighwayMan3561 on August 11, 2020, 04:28:57 PM
Quote from: ozarkman417 on August 11, 2020, 07:25:28 AM
The north end of I 35 has one with MN 61



But it's the exit ramp numbered, not the intersection.
Title: Re: At-Grade Intersections with Exit Numbers
Post by: roadman65 on August 11, 2020, 04:34:08 PM
US 98 in Bay County, FL used to have numbers.

US 258 in Hampton, VA used to have letter exits at service road crossovers back in the 70's.

NY 9A in New York City does left over from Miller's Westside Highway.
Title: Re: At-Grade Intersections with Exit Numbers
Post by: vdeane on August 11, 2020, 07:53:10 PM
Quote from: hbelkins on August 11, 2020, 01:33:06 PM
Can't recall off the top of my head, but didn't the at-grade portions of NY 17 between the Thruway and Binghamton have exit numbers?
Exit 98 was the only signed one as far as I know, but exits 85 and 86 are still there around Hale Eddy.
http://nysroads.com/i86list.php
https://goo.gl/maps/tD9CHSFV7APoKftSA
Title: Re: At-Grade Intersections with Exit Numbers
Post by: Bickendan on August 11, 2020, 10:11:07 PM
US 20 at the eastern end of Bus US 20 in Toledo, Oregon, is exit 7
https://www.google.com/maps/@44.6461227,-123.920112,3a,75y,38.76h,74.91t/data=!3m6!1e1!3m4!1sgbQI5beHeLa4KhKxmlthRA!2e0!7i13312!8i6656
Title: Re: At-Grade Intersections with Exit Numbers
Post by: zachary_amaryllis on August 11, 2020, 11:31:52 PM
not sure if this qualifies.. but it seems like its in the ballpark..

co-115 in colorado springs.. is a 2-lane all the way from penrose to near fort carson. then, shortly after a traffic light, there's a sign for exit 40-something.. and the road becomes a semi-expressway for a little bit, before turning into (where's the southern colo guy?) nevada street?

https://goo.gl/maps/hDD6JTSBYqijFu3Y7 (https://goo.gl/maps/hDD6JTSBYqijFu3Y7)

you might have to zoom or pan this around to see the sign.. google maps is really kicking my butt today for some reason.
its not at grade per se.. but close..
Title: Re: At-Grade Intersections with Exit Numbers
Post by: KCRoadFan on August 12, 2020, 01:21:29 AM
Doesn't NY 9A/the West Side Highway in NYC have some intersections like this (at grade with exit numbers)? Maybe FDR Drive as well? Anyway, when I saw the thread title, that was the first thing that came to mind for me.
Title: Re: At-Grade Intersections with Exit Numbers
Post by: Rothman on August 12, 2020, 06:41:54 AM
Quote from: KCRoadFan on August 12, 2020, 01:21:29 AM
Doesn't NY 9A/the West Side Highway in NYC have some intersections like this (at grade with exit numbers)? Maybe FDR Drive as well? Anyway, when I saw the thread title, that was the first thing that came to mind for me.
Mentioned twice in the thread already.
Title: Re: At-Grade Intersections with Exit Numbers
Post by: Henry on August 12, 2020, 10:59:52 AM
I believe the most common examples are on I-10, I-20 and I-40 in TX.
Title: Re: At-Grade Intersections with Exit Numbers
Post by: Ned Weasel on August 12, 2020, 01:53:16 PM
Quote from: Henry on August 12, 2020, 10:59:52 AM
I believe the most common examples are on I-10, I-20 and I-40 in TX.

I don't remember seeing any of those having exit numbers.  Google link?
Title: Re: At-Grade Intersections with Exit Numbers
Post by: kphoger on August 12, 2020, 02:09:24 PM
(https://icon-library.com/images/fail-icon/fail-icon-26.jpg)
Title: Re: At-Grade Intersections with Exit Numbers
Post by: SGwithADD on August 16, 2020, 11:47:30 AM
Ever since it corresponding cloverleaf movement was removed, I-55 South Exit 12B in Memphis has been converted into a left-turn intersection.  While it's on the off-ramp, it still has an exit number: https://goo.gl/maps/AWzU2cG4q3QJMnLn9
Title: Re: At-Grade Intersections with Exit Numbers
Post by: D-Dey65 on August 16, 2020, 03:42:31 PM
Quote from: Mccojm on August 11, 2020, 12:20:05 PM
Not sure if this meets the topic at question but here's my example.

EB I-495 Long Island Expressway Eastern Terminus in Calverton/ Riverhead NY is signed as Exit 73 even though the expressway essentially just squeezes down to one lane and merges into CR-58.
https://goo.gl/maps/hQPyJXhiCS2h2FPJ8 (https://goo.gl/maps/hQPyJXhiCS2h2FPJ8)
Crap. That used to narrow down to two lanes. And no, that doesn't count.


Quote from: Mccojm on August 11, 2020, 12:20:05 PM
Here's an at grade intersection at NY-347 & NY-111 in Smithtown NY. There's no exit number but there exit tab for N-S as there's a connecting ramp for all turns onto 111 to avoid turn movements at main intersection of 111/347. There a similar sign in opposite direction as well.
https://goo.gl/maps/9dvPrp83DQbb78268 (https://goo.gl/maps/9dvPrp83DQbb78268)
I fixed the link:
https://www.google.com/maps/@40.8333255,-73.1915748,3a,75y,276.53h,97.79t/data=!3m6!1e1!3m4!1stJroL0USyjSBJ4uscaa8Mg!2e0!7i16384!8i8192 (https://www.google.com/maps/@40.8333255,-73.1915748,3a,75y,276.53h,97.79t/data=!3m6!1e1!3m4!1stJroL0USyjSBJ4uscaa8Mg!2e0!7i16384!8i8192)
Your version was a zoom onto the asphalt.

I still remember at grade exit numbers on North Road(Suffolk CR 48, formerly CR 27) on the North Fork of Long Island, and on Suffolk CR 39 east of the end of Sunrise Highway, when NYSDOT was still hoping to move it on the extension east of Shinnecock Hills. Sadly though, I can't prove that they existed back then.




Title: Re: At-Grade Intersections with Exit Numbers
Post by: Ned Weasel on August 16, 2020, 08:07:57 PM
Quote from: SGwithADD on August 16, 2020, 11:47:30 AM
Ever since it corresponding cloverleaf movement was removed, I-55 South Exit 12B in Memphis has been converted into a left-turn intersection.  While it's on the off-ramp, it still has an exit number: https://goo.gl/maps/AWzU2cG4q3QJMnLn9

I've probably seen the advance sign for that, but I forgot all about it.  That one makes more sense than a lot of the others.
Title: Re: At-Grade Intersections with Exit Numbers
Post by: sprjus4 on August 16, 2020, 08:19:26 PM
Quote from: Henry on August 12, 2020, 10:59:52 AM
I believe the most common examples are on I-10, I-20 and I-40 in TX.
No exit numbers.
Title: Re: At-Grade Intersections with Exit Numbers
Post by: oscar on August 16, 2020, 08:39:06 PM
Quote from: stridentweasel on August 11, 2020, 11:07:16 AM
Quote from: texaskdog on August 11, 2020, 11:00:20 AM
lots of them on I-90 in south Dakota & Montana & wyoming

Are those at-grade intersections, or are they normal exits where the only thing signed is the exit number?

None are at-grade intersections. Some in Wyoming have off-ramps posted for 10-15 mph exit speeds, but traffic on the local road passes over or under I-90.
Title: Re: At-Grade Intersections with Exit Numbers
Post by: jp the roadgeek on August 16, 2020, 09:14:45 PM
Exit 16 and 17 (future 23D and 24) on CT 9 in Middletown.
Title: Re: At-Grade Intersections with Exit Numbers
Post by: PHLBOS on August 17, 2020, 06:03:19 PM
Although signage for such have largely gone by the wayside; MA 128 through Gloucester still has numbered intersections and one rotary... at least on paper.

9 - MA 127A intersection... MA 128's terminus
10 - MA 127 intersection
Blackburn Circle was not assigned an exit number
11 - MA 127 Grant Circle

Such has existed since 1962.  Note; MassDOT plans to drop these exit numbers for the above when 128 converts to mile-marker-based interchange numbers in the foreseeable future.

One sign that lists the above-exits (https://www.google.com/maps/@42.604087,-70.7423282,3a,75y,69.72h,82.63t/data=!3m6!1e1!3m4!1sen-9EWkhTjYTjBwwp-Z3pg!2e0!7i16384!8i8192).  Still there as of 2019.

Only remaining sign that the approaching Grant Circle is Exit 11 (https://www.google.com/maps/@42.6223491,-70.6798691,3a,75y,126.58h,75.97t/data=!3m6!1e1!3m4!1spX41WaPJYYHqh8ZkNNpOVw!2e0!7i16384!8i8192).  Again, still there as of 2019.
Title: Re: At-Grade Intersections with Exit Numbers
Post by: KCRoadFan on August 20, 2020, 01:14:38 AM
Many semi-examples can be seen on the US 50 freeway in Maryland, in the Annapolis area - many of them *technically* have ramps, but they are so short (and the turns so tight) that they are at-grade intersections for all intents and purposes. The signs seem to indicate as much - notice that many of them use an arrow pointing straight right (or up and right) as opposed to the normal angled arrow.

An example from Street View (Exit 38A for Thompson Creek Road): https://www.google.com/maps/@38.9771093,-76.3141553,3a,37.5y,105.9h,93.85t/data=!3m6!1e1!3m4!1s2b4cMNbukzuOTk5g1u9qtQ!2e0!7i16384!8i8192

(It doesn't even pretend to be a traditional freeway exit - in fact, there is even a "right turn" marking on the pavement!)
Title: Re: At-Grade Intersections with Exit Numbers
Post by: roadman65 on August 20, 2020, 01:19:20 AM
The Garden State Parkway used to have three of them in Cape May Courthouse, NJ before the NJTA had them all interchanged.
Title: Re: At-Grade Intersections with Exit Numbers
Post by: KCRoadFan on August 20, 2020, 01:22:37 AM
North of the border, I think I once read that there's a parkway-type road on Vancouver Island that marks some intersections with exit numbers. (Any users from BC, or who have visited, that can verify this?)
Title: Re: At-Grade Intersections with Exit Numbers
Post by: sprjus4 on August 20, 2020, 01:28:15 AM
Quote from: KCRoadFan on August 20, 2020, 01:14:38 AM
The signs seem to indicate as much - notice that many of them use an arrow pointing straight right (or up and right) as opposed to the normal angled arrow.
Some tighter ramps that are true exits can use these straight right arrows as well.

Quote
(It doesn't even pretend to be a traditional freeway exit - in fact, there is even a "right turn" marking on the pavement!)
While it indicates a right turn here, many auxiliary lanes on interstates with true ramps also use right turn pavement markings. It's not uncommon.
Title: Re: At-Grade Intersections with Exit Numbers
Post by: TheGrassGuy on October 02, 2020, 02:03:14 PM
Quote from: KCRoadFan on August 20, 2020, 01:14:38 AM
Many semi-examples can be seen on the US 50 freeway in Maryland, in the Annapolis area - many of them *technically* have ramps, but they are so short (and the turns so tight) that they are at-grade intersections for all intents and purposes. The signs seem to indicate as much - notice that many of them use an arrow pointing straight right (or up and right) as opposed to the normal angled arrow.

An example from Street View (Exit 38A for Thompson Creek Road): https://www.google.com/maps/@38.9771093,-76.3141553,3a,37.5y,105.9h,93.85t/data=!3m6!1e1!3m4!1s2b4cMNbukzuOTk5g1u9qtQ!2e0!7i16384!8i8192

(It doesn't even pretend to be a traditional freeway exit - in fact, there is even a "right turn" marking on the pavement!)

Exit 1 of I-95 (now Exit 76 of I-295), southbound, used to be like that. It had the same horizontal right arrow, and the same pavement markings.
Title: Re: At-Grade Intersections with Exit Numbers
Post by: SectorZ on October 02, 2020, 02:31:11 PM
Quote from: jp the roadgeek on August 11, 2020, 11:05:38 AM
MA 140 Exit 1 (current and future)

The other end of the freeway as well, exit 12 (to soon be 20) has traffic signals for each ramp to 24.
Title: Re: At-Grade Intersections with Exit Numbers
Post by: Kniwt on October 08, 2020, 10:59:38 AM
Quote from: KCRoadFan on August 20, 2020, 01:22:37 AM
North of the border, I think I once read that there's a parkway-type road on Vancouver Island that marks some intersections with exit numbers. (Any users from BC, or who have visited, that can verify this?)

Parts of BC 19:

(https://i.imgur.com/UV4ns2X.png)
Title: Re: At-Grade Intersections with Exit Numbers
Post by: hbelkins on October 08, 2020, 05:38:27 PM
How could I forget the exits for KY 66 and KY 118 on the Hal Rogers Parkway?
Title: Re: At-Grade Intersections with Exit Numbers
Post by: DJ Particle on October 09, 2020, 01:20:43 AM
Until the mid-1980s, the Orleans Rotary on Cape Cod was labeled as US-6 "Exit 13 N-S"

Exit 13S - MA-6A West/28 North
Exit 13N - Rock Harbor Rd

If they were still numbered, the renumbering project would have killed it, but if it was ever to be reconfigured as an interchange, it would likely be Exit 91.
Title: Re: At-Grade Intersections with Exit Numbers
Post by: TheOneKEA on October 13, 2020, 09:37:21 PM
Quote from: KCRoadFan on August 20, 2020, 01:14:38 AM
Many semi-examples can be seen on the US 50 freeway in Maryland, in the Annapolis area - many of them *technically* have ramps, but they are so short (and the turns so tight) that they are at-grade intersections for all intents and purposes. The signs seem to indicate as much - notice that many of them use an arrow pointing straight right (or up and right) as opposed to the normal angled arrow.

An example from Street View (Exit 38A for Thompson Creek Road): https://www.google.com/maps/@38.9771093,-76.3141553,3a,37.5y,105.9h,93.85t/data=!3m6!1e1!3m4!1s2b4cMNbukzuOTk5g1u9qtQ!2e0!7i16384!8i8192

(It doesn't even pretend to be a traditional freeway exit - in fact, there is even a "right turn" marking on the pavement!)

That's not even the worst one! Exit 31 on US 50/301 in Skidmore is basically a direct turnoff, without even a curb to prevent overrun:

https://www.google.com/maps/@39.0218768,-76.4229734,3a,75y,71.67h,86.2t/data=!3m6!1e1!3m4!1s2P2c9XuDM49cQDa3J5BoqA!2e0!7i16384!8i8192
Title: Re: At-Grade Intersections with Exit Numbers
Post by: Ned Weasel on October 14, 2020, 06:43:00 AM
Quote from: TheOneKEA on October 13, 2020, 09:37:21 PM
That's not even the worst one! Exit 31 on US 50/301 in Skidmore is basically a direct turnoff, without even a curb to prevent overrun:

https://www.google.com/maps/@39.0218768,-76.4229734,3a,75y,71.67h,86.2t/data=!3m6!1e1!3m4!1s2P2c9XuDM49cQDa3J5BoqA!2e0!7i16384!8i8192

That's kind of scary.  At least they did a better job with the sharp turn-offs on I-68 in Cumberland: https://goo.gl/maps/hT64hyJqqnDYfUVF6
Title: Re: At-Grade Intersections with Exit Numbers
Post by: TheGrassGuy on November 17, 2020, 05:20:36 PM
I-80 Hainsburg Rd exit in Columbia, NJ: Allow us to introduce ourselves