Good day to all.
Near Rockford, Illinois, There's one ramp connecting the Westbound Jane Addams Tollway (I-90) to Irene Road. Originally designed to temporarily facilitate the movement from I-90 west to I-39 south (via U.S. 20) while work on the nearby Cherry Valley Interchange was in full swing, ISTHA decided to make the ramp a permanent fixture after the fact.
However, this is the ONLY connection between I-90 and Irene Road. There is no westbound re-entry, and there is no eastbound exit or entrance. There's only one movement.
Is there another instance - anywhere - that exists? I'd really like to know. Thanks in advance for your responses.
Many of them. Probably too many to list.
One that lost all its other ramps to attrition (mainly due to SR 408): I-4 at Gore Street in Orlando.
Quote from: nwi_navigator_1181 on March 12, 2013, 01:29:01 AM
Good day to all.
Near Rockford, Illinois, There's one ramp connecting the Westbound Jane Addams Tollway (I-90) to Irene Road. Originally designed to temporarily facilitate the movement from I-90 west to I-39 south (via U.S. 20) while work on the nearby Cherry Valley Interchange was in full swing, ISTHA decided to make the ramp a permanent fixture after the fact.
However, this is the ONLY connection between I-90 and Irene Road. There is no westbound re-entry, and there is no eastbound exit or entrance. There's only one movement.
Is there another instance - anywhere - that exists? I'd really like to know. Thanks in advance for your responses.
It happens again in Illinois on the Tri-State Tollway:
There are only southbound entrances from LaGrange Road (US-12/20/45) and Archer Avenue (IL-171).
Balmoral also only had a southbound only entrance until recently when it got a northbound exit.
The Northwest Tollway has a westbound only entrance ramp from Devon just before the toll plaza.
Quote from: Brandon on March 12, 2013, 06:41:37 AM
It happens again in Illinois on the Tri-State Tollway:
There are only southbound entrances from LaGrange Road (US-12/20/45) and Archer Avenue (IL-171).
These ramps are logically paired with the northbound exit to I-55.
Quote from: Brandon on March 12, 2013, 06:41:37 AM
The Northwest Tollway has a westbound only entrance ramp from Devon just before the toll plaza.
There's no obvious counterpart here (though it also serves IL 72, which has two other ramps a bit to the west). Perhaps the intended way of reaching Devon from I-90 east is to loop around via I-190 and Mannheim.
Southbound DC-295 at Baker Street NE–I believe the exit is signed for "River Terrace," the name of a neighborhood–has a lone off-ramp with no other movements to or from the highway in either direction. People wanting another movement to or from that area have to connect via Benning Road.
I'll add a link later. Edited to add link. Ramp is in middle of map: http://goo.gl/maps/g1vpT
For Irene Road, Belvidere wants it to become a full interchange, they just got the tollway to pay for a quarter of it during the I39 interchange work. It was not designed to be temporary.
Quote from: nwi_navigator_1181 on March 12, 2013, 01:29:01 AMHowever, this is the ONLY connection between I-90 and Irene Road. There is no westbound re-entry, and there is no eastbound exit or entrance. There's only one movement.
Is there another instance - anywhere - that exists? I'd really like to know. Thanks in advance for your responses.
In Boston, MA along the Mass Pike Extension (I-90), there are 2 entrance ramps to westbound I-90 w/no other movement ramps: one at Mass Ave. (Exit 21), the other at Clarendon St./MA 28 South
(Exit 23).
Edited to add: one more westbound entrance ramp: Arlington St. (Exit 23).
In Chester Twp. (Delaware County) PA: prior to its merge w/I-95 South, there's one exit ramp from US 322 Westbound onto Concord Road. No other
direct access to/from Concord Road exists between it, US 322 & I-95.
Yes, an exit I use frequently, exit 123 off ON 417 for Island Park Drive in Ottawa. You'd think it's mostly local (especially since commercial vehicles are prohibited,) but it actually serves all of the Aylmer sector in Gatineau and some of Hull, too.
Quote from: PHLBOS on March 12, 2013, 08:58:54 AM
In Boston, MA along the Mass Pike Extension (I-90), there are 2 entrance ramps to westbound I-90 w/no other movement ramps: one at Mass Ave. (Exit 21), the other at Clarendon St./MA 28 South (Exit 23).
Three. Don't forget Arlington Street.
Exit 15 on the FDR Drive in New York (marked for E 106 St) has no other movement aside from the southbound ramp. The next exit is 10 blocks to the south. New York's parkways and expressways are a little difficult to account for, in my opinion, because often a corresponding movement appears a short distance away such that you don't have to go much out of your way to make that movement. In my view that sort of situation means it's not a "one movement" only situation. But having to go 10 blocks away is often more than just a minor nuisance.
I saw one on I-87 near Saratoga Springs, in New York State. It has a southbound entry from a local road that has no exit ramps off of I-87 in either direction nor a northbound on ramp as well.
The Garden State Parkway has one from Cheesequake State Park that leads to the GSP Southbound, but no off ramps or NB on ramp.
US 5 to I-84 West in East Hartford, CT. No other direct ramps from I-84 to US 5.
This kinda sorta qualifies.
In the City of Greenbelt, Maryland (Prince George's County) there's a ramp from eastbound Md. 193 (Greenbelt Road) to the southbound side of the Baltimore-Washington Parkway (federal government maintenance, "secret" Md. 295). Google maps here (https://maps.google.com/maps?q=38.995373,-76.890056&hl=en&num=1&t=h&gl=us&z=15).
Other movements to and from the Parkway can be made at the interchange to the east. Access to the Capital Beltway (I-95 and I-495) is made via Md. 201 (Kenilworth Avenue) to the west of this location, which in turn has a full Beltway interchange.
Quote from: empirestate on March 12, 2013, 09:05:15 AM
Quote from: PHLBOS on March 12, 2013, 08:58:54 AM
In Boston, MA along the Mass Pike Extension (I-90), there are 2 entrance ramps to westbound I-90 w/no other movement ramps: one at Mass Ave. (Exit 21), the other at Clarendon St./MA 28 South (Exit 23).
Three. Don't forget Arlington Street.
You're right, and that's actually Exit 23 and not the Clarendon St. entrance ramp. Original post has since been edited/corrected BTW.
Virginia has:
I-95 Exit 12 which is from NB 95 to NB US 301 and no other ramps.
VA 134 at VA 152 Todds Lane in Hampton has a ramp from SB 134 to WB 152 with no other movements possible.
Mapmikey
Quote from: PHLBOS on March 12, 2013, 08:58:54 AM
In Boston, MA along the Mass Pike Extension (I-90), there are 2 entrance ramps to westbound I-90 w/no other movement ramps: one at Mass Ave. (Exit 21), the other at Clarendon St./MA 28 South (Exit 23).
I would consider the Clarendon St onramp as part of the whole Prudential / Copley interchange (exit 22). Yeah, there's also the onramp from Huntington Ave in part of that interchange, but I'd consider them both part of exit 22.
US-64/169/Creek Turnpike has only one ramp, eastbound, to Mingo Road, and no corresponding entrances.
blink and you'll miss it: here is a ramp from Laulima Street to HI-78, just next to a knot of other ramps.
http://goo.gl/maps/UgRqx
there are two cutouts on Laulima Street, btw. HI-72 and HI-90.
I-64 in Hampton, VA: Exit 265C - Rip Rap Rd: http://goo.gl/maps/C4Bia
Could be considered another ramp in the Armistead / LaSalle interchange just to the west, and is numbered as such, but the majority of traffic turns left to go towards King St and Mercury Blvd
I-64 in Chesapeake, VA: Exit 292 - Great Bridge Blvd: http://goo.gl/maps/zjfGU
Could be considered part of the I-464/US 17/VA 168 interchange just to the east, as it does serve a missing movement in that interchange, but it is the only ramp that uses Great Bridge Blvd, and carries a separate exit number.
VA 168 in Chesapeake, VA: Kempsville Rd: http://goo.gl/maps/REcrh
Could be considered part of the Battlefield Blvd interchange just to the north, but it doesn't serve a missing movement there (Kempsville Rd traffic could take the loop ramp to Battlefield Blvd south and then turn left on Kempsville Rd) and doesn't direct traffic towards that interchange.
I-664 in Bowers Hill, VA: Exit 14 - Military Hwy: http://goo.gl/maps/GbkNz
I don't know what to consider this, as it's one of a multitude of ramps serving US 13/58/460 in the Bowers Hill area, but it is numbered independently of all the other ramps (which are part of exit 13), and doesn't have any other corresponding ramps.
There used to be an entrance ramp on I-70 between Dayton and Springfield around mm 42 that is no longer in use. It looked as if it came from Lower Valley Pike. There were no corresponding exit ramps for this.
Looking at Historic Aerials, the ramp was Lower Valley Pike and went straight across to where CR 316 is now (1956, 1968). Because of I-70 being built, the road was cut off. CR 316 was routed next to the eastbound lanes of I-70 to the overpass for CR 339.
I had always wondered why that ramp was there.
Quote from: deathtopumpkins on March 12, 2013, 02:33:23 PM
I-64 in Hampton, VA: Exit 265C - Rip Rap Rd: http://goo.gl/maps/C4Bia
Could be considered another ramp in the Armistead / LaSalle interchange just to the west, and is numbered as such, but the majority of traffic turns left to go towards King St and Mercury Blvd
I-64 in Chesapeake, VA: Exit 292 - Great Bridge Blvd: http://goo.gl/maps/zjfGU
Could be considered part of the I-464/US 17/VA 168 interchange just to the east, as it does serve a missing movement in that interchange, but it is the only ramp that uses Great Bridge Blvd, and carries a separate exit number.
VA 168 in Chesapeake, VA: Kempsville Rd: http://goo.gl/maps/REcrh
Could be considered part of the Battlefield Blvd interchange just to the north, but it doesn't serve a missing movement there (Kempsville Rd traffic could take the loop ramp to Battlefield Blvd south and then turn left on Kempsville Rd) and doesn't direct traffic towards that interchange.
I-664 in Bowers Hill, VA: Exit 14 - Military Hwy: http://goo.gl/maps/GbkNz
I don't know what to consider this, as it's one of a multitude of ramps serving US 13/58/460 in the Bowers Hill area, but it is numbered independently of all the other ramps (which are part of exit 13), and doesn't have any other corresponding ramps.
Hampton Roads is known for a few of these.
Quote from: deathtopumpkins on March 12, 2013, 02:08:20 PM
Quote from: PHLBOS on March 12, 2013, 08:58:54 AM
In Boston, MA along the Mass Pike Extension (I-90), there are 2 entrance ramps to westbound I-90 w/no other movement ramps: one at Mass Ave. (Exit 21), the other at Clarendon St./MA 28 South (Exit 23).
I would consider the Clarendon St onramp as part of the whole Prudential / Copley interchange (exit 22). Yeah, there's also the onramp from Huntington Ave in part of that interchange, but I'd consider them both part of exit 22.
I could accept that reasoning, and exit numbering likely agrees with you. It can be tricky to figure out in urban areas.
Another, non-urban example that occurs to me is NY 481 to Caughdenoy Road north of Syracuse.
There is an entrance to I-84 westbound from Mashapaug Road south of Sturbridge, MA.
I-95 exit 10 near the Philadelphia Airport consists of one ramp to PA 291 eastbound from I-95 northbound.
There is an entrance to I-95 northbound from Castor Avenue in Philadelphia.
NY 481 has an exit with only one movement near Clay for Caughdenoy and Maple Roads (http://maps.google.com/?ll=43.159512,-76.157066&spn=0.006551,0.013937&t=h&z=17). It's even numbered as Exit 11. I always thought the exit seemed pointless because it only has one movement.
Just south of Pearsall, TX, where I-35 crosses CR-4201, there is only a southbound entrance–no southbound exit, northbound entrance, or northbound exit.
Not terribly uncommon.
Quote from: kphoger on March 12, 2013, 04:52:19 PM
Just south of Pearsall, TX, where I-35 crosses CR-4201, there is only a southbound entrance–no southbound exit, northbound entrance, or northbound exit.
Not terribly uncommon.
that's a frontage road slip ramp, which is a whole 'nother kettle of fish. I'll bet there are plenty of those in Texas that exist only in one movement.
AZ US 60, WB exit 199: http://goo.gl/maps/1rRN8
PA I-78, WB exit 58: http://goo.gl/maps/0vhDs
While both near interchanges, they have their own exit numbers. Here's one that used to have its own exit number, until it was conflated with the next interchange to the east:
NJ I-80, EB Exit 34 (formerly 33): http://goo.gl/maps/PNDLq
So yeah, there are a few of these.
Quote from: NE2 on March 12, 2013, 07:06:03 AM
Quote from: Brandon on March 12, 2013, 06:41:37 AM
It happens again in Illinois on the Tri-State Tollway:
There are only southbound entrances from LaGrange Road (US-12/20/45) and Archer Avenue (IL-171).
These ramps are logically paired with the northbound exit to I-55.
No, these are not. The ramps at Wolf Road are paired with I-55. These used to have a northbound exit ramp until the late 1980s and were paired with 95th Street.
Quote from: NE2 on March 12, 2013, 07:06:03 AM
Quote from: Brandon on March 12, 2013, 06:41:37 AM
The Northwest Tollway has a westbound only entrance ramp from Devon just before the toll plaza.
There's no obvious counterpart here (though it also serves IL 72, which has two other ramps a bit to the west). Perhaps the intended way of reaching Devon from I-90 east is to loop around via I-190 and Mannheim.
Again, there are other ways of going onto the outbound Northwest Tollway from that point. IL-72 (Touhy Avenue / Higgins Road) is served just as well by the set on the Tri-State Tollway at Touhy Avenue. It's an extra ramp just as the ramp from Balmoral was until the exit ramp was built recently.
Quote from: Brandon on March 12, 2013, 07:40:55 PM
Quote from: NE2 on March 12, 2013, 07:06:03 AM
Quote from: Brandon on March 12, 2013, 06:41:37 AM
It happens again in Illinois on the Tri-State Tollway:
There are only southbound entrances from LaGrange Road (US-12/20/45) and Archer Avenue (IL-171).
These ramps are logically paired with the northbound exit to I-55.
No, these are not. The ramps at Wolf Road are paired with I-55. These used to have a northbound exit ramp until the late 1980s and were paired with 95th Street.
Huh? There's a direct ramp from I-294 north to I-55 north. There's no direct ramp from I-55 south to I-294 south. Wolf Road doesn't help make this movement. LaGrange does.
What about the 39th Street exit off the Gowanus (I-278 Westbound) in Brooklyn, NY? Its not paired with anything and it is solo, and only allows movement to WB 39th Street only even though 39th Street is two way.
Also, there is an exit off the Hill to Hill Bridge (PA 378 NB) for Main Street in Bethlehem, PA that has no logical counterpart being the ramp leading on to the bridge was barricaded off years ago.
I-35 has this odd little one (http://goo.gl/maps/rjI58) in OKC.
Quote from: NE2 on March 12, 2013, 07:59:45 PM
Quote from: Brandon on March 12, 2013, 07:40:55 PM
Quote from: NE2 on March 12, 2013, 07:06:03 AM
Quote from: Brandon on March 12, 2013, 06:41:37 AM
It happens again in Illinois on the Tri-State Tollway:
There are only southbound entrances from LaGrange Road (US-12/20/45) and Archer Avenue (IL-171).
These ramps are logically paired with the northbound exit to I-55.
No, these are not. The ramps at Wolf Road are paired with I-55. These used to have a northbound exit ramp until the late 1980s and were paired with 95th Street.
Huh? There's a direct ramp from I-294 north to I-55 north. There's no direct ramp from I-55 south to I-294 south. Wolf Road doesn't help make this movement. LaGrange does.
Yes, it does, but it is not a part of the I-55/I-294 interchange. It is a completely separate ramp with a bit of a "Breezewood" between the two. The Wolf Road interchange is part of the original interchange there at I-55/Joliet Road.
Yes, it's a separate ramp that's logically paired with the 294 north to 55 north ramp. You're looking only about physical location, not logical movements.
All right, it's a very marginal example. I see both sides of the argument. Actually, I'm glad the example was given, because it made me think critically about what qualifies as a "movement" (no poop jokes!).
Surely there are more examples to find, though. ?
This could marginally count as "one movement only":
NY 695 outside of Syracuse with the Gerelock Rd. exit and Horan Rd. entrance ramps seemingly independent of each other.
In South Amboy, NJ you have one off ramp from Northbound US 9 & NJ 35 that goes to CR 670. There is no logical counter part to this.
Winter St. to westbound US 2 in Superior, WI.
http://maps.google.com/maps?q=superior+wi&hl=en&ll=46.723771,-92.127721&spn=0.011106,0.01929&hnear=Superior,+Douglas,+Wisconsin&gl=us&t=m&z=16
Okay my turn.
Mayfair Road exit from US-45 http://goo.gl/maps/kCjNL ...Full interchange with North Ave close by though.
Port Washington Road exit from I-43 http://goo.gl/maps/PvVRl
Only ones I can think of right now.
OH 315 southbound to US 40 / Broad St in Columbus.
There is not a southbound entrance ramp. There is not a northbound exit ramp. There used to be a northbound entrance ramp, but that's been gone at least 20 years now.
To top it all off, you can't even legally exit from the mainline of OH 315 to Broad St using this ramp. In order to use the ramp, you must have entered OH 315 southbound from I-670 or US 33 at the previous interchange. This restriction has been present since circa 2001.
Across the street from the end of this ramp used to be a Ford dealership, which was closed as part of the reorganization associated with the auto bailout. Not really roadgeek-relevant, but continuing on the theme of a series of closures...
I-390 and Monroe CR 85: http://goo.gl/maps/Z0II0
I-86 and Chemung CR 74: http://goo.gl/maps/oT5Tw
Quote from: PennDOTFan on March 12, 2013, 03:18:05 PM
There is an entrance to I-84 westbound from Mashapaug Road south of Sturbridge, MA.
Forgot about that one. IIRC, that was once MA 15.
Quote from: PennDOTFan on March 12, 2013, 03:18:05 PM
I-95 exit 10 near the Philadelphia Airport consists of one ramp to PA 291 eastbound from I-95 northbound.
Given that one is practically in my backyard, I'm surprised that I forgot that one. Blame it on
still adjusting to Daylight Savings Time lol. :)
Quote from: PennDOTFan on March 12, 2013, 03:18:05 PMThere is an entrance to I-95 northbound from Castor Avenue in Philadelphia.
As with the fore-mentioned Clarendon St. entrance ramp to I-90 West in Boston (my bad on considering that independent of Exit 22), that I-95 North entrance ramp is likely considered to be part of Exit 25 (Allegheny Ave.).
Canton, MA: On-ramp to I-95 South from Dedham St., located between Exit 11 (Neponset St.) and Exit 12 (I-93 North).
Quote from: roadman65 on March 12, 2013, 08:15:59 PM
What about the 39th Street exit off the Gowanus (I-278 Westbound) in Brooklyn, NY? Its not paired with anything and it is solo, and only allows movement to WB 39th Street only even though 39th Street is two way.
....
I thought about that one, but I didn't think it met the criteria because there's an exit ramp on the other side at the same place. It doesn't connect directly to the same street, but it's within about one block. Certainly an example of limited connections, at least.
Quote from: colinstu on March 12, 2013, 11:49:36 PM
Okay my turn.
Mayfair Road exit from US-45 http://goo.gl/maps/kCjNL ...Full interchange with North Ave close by though.
Port Washington Road exit from I-43 http://goo.gl/maps/PvVRl
Only ones I can think of right now.
I'd say both of those are examples where they simply split an interchange up due to the proximity of the other road(s). In the first one, the ramp is simply providing the missing NB>EB movement at the North Avenue exit. In the second one, the ramp functions as the mate to the SB entrance from County Line Road
I-95 exit 12 in Virginia: http://maps.google.com/maps?hl=en&ll=36.725522,-77.527374&spn=0.007843,0.016512&gl=us&t=k&z=17
This used to be the north end of the Emporia bypass. There is, however, a full interchange just to the north now.
I-95 exit 17 in Rhode Island: http://maps.google.com/maps?hl=en&ll=41.787553,-71.419748&spn=0.007296,0.016512&gl=us&t=k&z=17
Other movements can be made using RI 10 to the south.
I-469 exit 31C: http://maps.google.com/maps?hl=en&ll=41.170772,-85.108101&spn=0.014731,0.033023&gl=us&t=k&z=16
Other movements are via I-69 and Dupont Road.
There are a fair number on roads that were upgraded on the spot where a bypass begins or ends, such as SR 99 in California (e.g. both ends of Traver).
http://articles.mcall.com/2012-05-20/news/mc-78-interchange-designs-20120520_1_interchange-entrance-ramp-gps-unit
QuoteOn I-78 at Emaus Avenue in Allentown, motorists are treated to an off-ramp from the highway to southbound on Emaus – and that's the only movement available. You can't get off the highway northbound, nor onto 78 from either way on Emaus Avenue. Why bother with (and spend the money on) a one-ramp "interchange"? I'm unaware of any major traffic generator – a business, sprawling school complex, warehouse park or whatever – south of 78 that would justify the lone off-ramp.
http://maps.google.com/maps?hl=en&ll=40.564062,-75.476734&spn=0.005256,0.008256&t=k&z=18
Quote from: WNYroadgeek on March 13, 2013, 01:09:46 AM
I-390 and Monroe CR 85: http://goo.gl/maps/Z0II0
Nah, that's logically paired with the on-ramp from East Henrietta Road, because the off-ramp there is pretty much out of the question at rush hour! ;-)
I guess if we're trying to list all of them... there's one on westbound I-68 at Exit 41 (Seton Drive) (http://maps.google.com/?ll=35.499382,-97.462903&spn=0.006455,0.009602&t=m&z=17). It was to provide access for ambulances to get to (the now-closed) Sacred Heart Hospital in Cumberland.
Landers Lane off I-295 North in Delaware into a residential neighborhood. The exit gore sign even lists all the developments one can access off the exit.
http://goo.gl/maps/fkYoa
Quote from: NE2 on March 13, 2013, 10:28:27 AM
http://articles.mcall.com/2012-05-20/news/mc-78-interchange-designs-20120520_1_interchange-entrance-ramp-gps-unit
QuoteOn I-78 at Emaus Avenue in Allentown, motorists are treated to an off-ramp from the highway to southbound on Emaus – and that's the only movement available. You can't get off the highway northbound, nor onto 78 from either way on Emaus Avenue. Why bother with (and spend the money on) a one-ramp "interchange"? I'm unaware of any major traffic generator – a business, sprawling school complex, warehouse park or whatever – south of 78 that would justify the lone off-ramp.
http://maps.google.com/maps?hl=en&ll=40.564062,-75.476734&spn=0.005256,0.008256&t=k&z=18
This looks like a silly example by the author of the article. If you zoom out a bit on the GoogMap, you'll see that the ramp in question makes up for a missing movement at the Lehigh Street interchange. The ramp could not be easily built at Lehigh due to nearby structures. Duh!
Quote from: empirestate on March 13, 2013, 12:06:22 PM
Quote from: WNYroadgeek on March 13, 2013, 01:09:46 AM
I-390 and Monroe CR 85: http://goo.gl/maps/Z0II0
Nah, that's logically paired with the on-ramp from East Henrietta Road, because the off-ramp there is pretty much out of the question at rush hour! ;-)
I'd consider it a single movement exit. While the main purpose of the ramp may be to offset MCC traffic from NY 15A up north, I use it to get gas when I'm home (BJ's in Henrietta is the cheapest gas in the entire state), and while I can take I-390 to get there, I can't take any freeways on the way back. It's too bad - it would save a bit of time to be able to bypass Clinton Ave and Westfall Rd both directions.
Quote from: theline on March 13, 2013, 04:23:10 PM
Quote from: NE2 on March 13, 2013, 10:28:27 AM
http://articles.mcall.com/2012-05-20/news/mc-78-interchange-designs-20120520_1_interchange-entrance-ramp-gps-unit
QuoteOn I-78 at Emaus Avenue in Allentown, motorists are treated to an off-ramp from the highway to southbound on Emaus – and that's the only movement available. You can't get off the highway northbound, nor onto 78 from either way on Emaus Avenue. Why bother with (and spend the money on) a one-ramp "interchange"? I'm unaware of any major traffic generator – a business, sprawling school complex, warehouse park or whatever – south of 78 that would justify the lone off-ramp.
http://maps.google.com/maps?hl=en&ll=40.564062,-75.476734&spn=0.005256,0.008256&t=k&z=18
This looks like a silly example by the author of the article. If you zoom out a bit on the GoogMap, you'll see that the ramp in question makes up for a missing movement at the Lehigh Street interchange. The ramp could not be easily built at Lehigh due to nearby structures. Duh!
Except that movement isn't missing at Lehigh: http://goo.gl/maps/5JgFL
Quote from: deanej on March 13, 2013, 05:22:32 PM
Quote from: empirestate on March 13, 2013, 12:06:22 PM
Quote from: WNYroadgeek on March 13, 2013, 01:09:46 AM
I-390 and Monroe CR 85: http://goo.gl/maps/Z0II0
Nah, that's logically paired with the on-ramp from East Henrietta Road, because the off-ramp there is pretty much out of the question at rush hour! ;-)
I'd consider it a single movement exit.
So would I. I was having a bit of fun. ;-) ;-)
Harrison, NJ has one on Fourth Street to I-280 Westbound. Although the WB Exit for Exit 16 is nearby, that particular ramp fills in for the missing movement at the Harrison Avenue interchange about a mile to the west. So, in one matter of looking at it one might say it qualifies, but in the other you cannot exit Eastbound on I-280 to Fourth Street and exiting at Harrison Avenue requires you to go a short distance east on Harrison Avenue to reach Fourth Street where it is quite a few blocks away from the Fourth Street & I-280 crossing.
Near Exit 116 in Homdel, NJ along the Garden State Parkway you have a single on ramp from a Park and Ride Lot that is a short distance away from the actual 116 interchange. You have to get off the Parkway at 116 and travel on local roads within Telagraph Hill Park to reach the lot and to go south on the Parkway you have to return the same way as it is a lone ramp. I do not know if this counts or not being one can say its part of Exit 116 as that particular interchange does not connect to other roads besides the GSP and Telegraph Hill Park is only accessible to and from the GSP as an extended Rest Area you could say. So logically the counterparts to the lone ramp are the Exit 116 ramps being that all vehicles to access the Park and Ride had to get there from Exit 116 as there is no other way to the facility other than a roadway closed to the general public from a local road in Homdel that is used for service vehicles to the PNC Bank Arts Center and GSP employees.
Quote from: empirestate on March 13, 2013, 05:34:53 PM
Quote from: theline on March 13, 2013, 04:23:10 PM
This looks like a silly example by the author of the article. If you zoom out a bit on the GoogMap, you'll see that the ramp in question makes up for a missing movement at the Lehigh Street interchange. The ramp could not be easily built at Lehigh due to nearby structures. Duh!
Except that movement isn't missing at Lehigh: http://goo.gl/maps/5JgFL
Right you are, empirestate. I didn't zoom in close enough to see the left turn option there. Boy is my face red!
By the way, here's the original Emmaus interchange: http://www.historicaerials.com/aerials.php?scale=4&lat=40.564&lon=-75.479&year=1972
The Hooker St. entrance in Plainville, CT to CT 72 E. For years, it was the de-facto eastbound entrance for I-84 East for Exit 34, and involved backtracking 1 1/2 mi down CT 372 to get back onto I-84, a move that was created with the completion of the CT 72 expressway west of I-84 (there used to be an entrance under the bridges on Woodford Ave for which you can still see the grassed over ghost ramp), and finally corrected about 10 years ago.
I thought of the one east of Huber Heights on I-70 (http://goo.gl/maps/CfQO6) but was beaten to it badly....I wonder if ODOT had ever assigned an "exit number" to it as its own interchange. It was kinda neat to see there with shields and stuff at the entrance, but I guess I can see why it went away since it was close to the next interchange. Historic Aerials shows (http://www.historicaerials.com/aerials.php?scale=1.4124656570532E-05&lat=39.8663641463219&lon=-84.0374034913316&year=2006) that the ramp was there in 2004, but disconnected with the cul-de-sac being built in 2006. It doesn't seem that long ago! Time flies.
A similar transition from two-way to one-way at the entrance to the highway with that being the only movement is just short of the Connecticut line on I-84 WB (http://goo.gl/maps/KbEJO), also discussed around here in the recent past in some other thread. Of course, that road is an old alignment, not a cut-off crossroad, so maybe similar examples are more common.
Quote from: PurdueBill on March 14, 2013, 12:00:07 AM
I thought of the one east of Huber Heights on I-70 (http://goo.gl/maps/CfQO6) but was beaten to it badly....I wonder if ODOT had ever assigned an "exit number" to it as its own interchange.
You should be able to find out: http://www.dot.state.oh.us/Divisions/planning/techserv/prod_services/Pages/TransportMap.aspx
Quote from: PurdueBill on March 14, 2013, 12:00:07 AM
A similar transition from two-way to one-way at the entrance to the highway with that being the only movement is just short of the Connecticut line on I-84 WB (http://goo.gl/maps/KbEJO), also discussed around here in the recent past in some other thread. Of course, that road is an old alignment, not a cut-off crossroad, so maybe similar examples are more common.
Sure, you get that in Selinsgrove, PA: http://goo.gl/maps/lrx7G
Also NY 17 merging onto I-287.
Quote from: deanej on March 14, 2013, 10:57:57 AM
Also NY 17 merging onto I-287.
While your example is still valid and not to nitpick; but according to Bing maps, the ramp that you speak of (merging onto I-287 south just at the I-87/Thruway interchange) is marked as
Old Route 17.
http://www.bing.com/maps/#JnE9LmhpbGxidXJuJTI1MmMlMmJueSU3ZXNzdC4wJTdlcGcuMSZiYj00MS4xMzYxMTE3ODg1NDIyJTdlLTc0LjE0NTEwNTgzODc3NTYlN2U0MS4xMTU5NzIzMTMwMzIzJTdlLTc0LjE4MDk0MDE1MTIxNDY= (http://www.bing.com/maps/#JnE9LmhpbGxidXJuJTI1MmMlMmJueSU3ZXNzdC4wJTdlcGcuMSZiYj00MS4xMzYxMTE3ODg1NDIyJTdlLTc0LjE0NTEwNTgzODc3NTYlN2U0MS4xMTU5NzIzMTMwMzIzJTdlLTc0LjE4MDk0MDE1MTIxNDY=)
Currently, NY 17 briefly
piggybacks w/I-87 (between Exits 15A & 15) for a short distance and has even a shorter
piggyback w/I-287 from there to Exit 66 as (NJ 17).
And... up until the most recent traffic data report (https://www.dot.ny.gov/divisions/engineering/technical-services/hds-respository/Traffic%20Volume%20Report%202011%20Appendix%20F%20011-025B.pdf), it was considered to follow the local road (state routes in NY don't necessarily follow the signage). They must have recently decided to re-route it to match the signage.
Quote from: PHLBOS on March 14, 2013, 01:14:48 PM
Quote from: deanej on March 14, 2013, 10:57:57 AM
Also NY 17 merging onto I-287.
While your example is still valid and not to nitpick; but according to Bing maps, the ramp that you speak of (merging onto I-287 south just at the I-87/Thruway interchange) is marked as Old Route 17.
http://www.bing.com/maps/#JnE9LmhpbGxidXJuJTI1MmMlMmJueSU3ZXNzdC4wJTdlcGcuMSZiYj00MS4xMzYxMTE3ODg1NDIyJTdlLTc0LjE0NTEwNTgzODc3NTYlN2U0MS4xMTU5NzIzMTMwMzIzJTdlLTc0LjE4MDk0MDE1MTIxNDY= (http://www.bing.com/maps/#JnE9LmhpbGxidXJuJTI1MmMlMmJueSU3ZXNzdC4wJTdlcGcuMSZiYj00MS4xMzYxMTE3ODg1NDIyJTdlLTc0LjE0NTEwNTgzODc3NTYlN2U0MS4xMTU5NzIzMTMwMzIzJTdlLTc0LjE4MDk0MDE1MTIxNDY=)
Currently, NY 17 briefly piggybacks w/I-87 (between Exits 15A & 15) for a short distance and has even a shorter piggyback w/I-287 from there to Exit 66 as (NJ 17).
You're not at all wrong about that, but this spot is a well-known anomaly of routings in NYS. Without getting too deep into it, the old road is kind of also NY 17, while signage has it following the Thruway.
Quote from: deanej on March 14, 2013, 04:54:12 PM
And... up until the most recent traffic data report (https://www.dot.ny.gov/divisions/engineering/technical-services/hds-respository/Traffic%20Volume%20Report%202011%20Appendix%20F%20011-025B.pdf), it was considered to follow the local road (state routes in NY don't necessarily follow the signage). They must have recently decided to re-route it to match the signage.
I've never been sure about that; it does appear that old 17 saw some reconstruction, perhaps by the town or village, but I don't know for sure if it was ever transferred out of state maintenance. If not, then since it isn't a reference route, it must still be NY 17 at some level.
That or the log is being ambiguous. I didn't actually measure out the distances to see what they meant. It's entirely possible that it's split, though I prefer to think of northbound NY 17 as not continuous.
One odd example is north of Williamsport on US 15 at PA 973.
http://bit.ly/10Ncj1N (http://bit.ly/10Ncj1N)
This ramp serves as sort of an indirect link to the northern end of Business 15 via 973 (Lycoming Creek Road), but there are no real businesses to speak of that far north. There's another exit a few miles south (Hepburnville) to serve the BUS 15 traffic, and I've never seen a single car take lone 973 ramp, except my own.
What I find most intriguing about that interchange is that the two southbound bridges following the exit are very obviously built to accommodate a third lane–even though the northbound bridges are not. Further, the mountain cut and grading immediately beyond the bridges aren't wide enough to sustain the third lane, so it doesn't appear PennDOT was planning ahead for a truck lane on the grade. It looks like just enough room was left for an acceleration lane following a loop ramp from 973 to 15 southbound. And yet the single ramp that is there doesn't allow enough room for that loop ramp to be added.
While we're at it, there's another single-movement ramp about three miles to the north that connects old 15 to the current freeway NB.
Quote from: amroad17 on March 12, 2013, 10:28:05 PM
This could marginally count as "one movement only":
NY 695 outside of Syracuse with the Gerelock Rd. exit and Horan Rd. entrance ramps seemingly independent of each other.
Gah, you beat me!
Here's (http://maps.google.com/?ll=41.3208,-77.09482&spn=0.010668,0.022724&t=m&z=16) one on US 15 for PA 973 about 6 miles north of Williamsport.
Also, all interchanges on Alanland's limited-unlimited-access freeways have only one movement.
EDIT: I just noticed that the PA 973 example was posted in briantroutman's reply
directly above mine! That's what I get for not looking at every reply. Oh, well!
Quote from: empirestate on March 14, 2013, 05:41:47 PM
I've never been sure about that; it does appear that old 17 saw some reconstruction, perhaps by the town or village, but I don't know for sure if it was ever transferred out of state maintenance. If not, then since it isn't a reference route, it must still be NY 17 at some level.
It's still state maintained as of 2007: http://ftp.dot.ny.gov/tdv/YR2007/R08/85_Rockland/85_0168.pdf
This is a very odd one:
http://maps.google.com/maps?q=google+maps+akron+oh&hl=en&ll=41.05913,-81.504414&spn=0.00953,0.017424&hnear=Akron,+Summit,+Ohio&gl=us&t=h&z=16
This is for the collector ramp from SB I-77/WB & EB I-76 traffic "exiting" onto I-77 South, at the Central Interchange, to Cole Avenue/Lover's Lane.
Easier shown than explained.
How about this one: http://goo.gl/maps/l4Hz5
That entrance used to be made by the service road merging into the loop ramp a short distance to the east, but this dedicated slip ramp was added when the highway was reconstructed. Functionally, you could argue that this movement is related to the Brown/Broad interchange (Exit 12), but there's another eastbound on-ramp there as well.
As an aside, just across the river you have the oddity of two ramps for the same movement; in fact, you have two cases of this: From South Ave. there are two ramps to I-490 east (functionally related to the single Exit 16 exit ramp), and two ramps to the same from the clockwise Inner Loop. (Again, one of the latter pair was recently reconfigured such that it's accessible from Byron Street, but used to be a loop only reachable via the Inner Loop off-ramp.) This happened because the pair of ramps joining I-490 from the right were originally meant for I-390, the cancelled Genesee Expressway through Rochester's south side.
Quote from: NE2 on March 13, 2013, 10:28:27 AM
http://articles.mcall.com/2012-05-20/news/mc-78-interchange-designs-20120520_1_interchange-entrance-ramp-gps-unit
QuoteOn I-78 at Emaus Avenue in Allentown, motorists are treated to an off-ramp from the highway to southbound on Emaus – and that's the only movement available. You can't get off the highway northbound, nor onto 78 from either way on Emaus Avenue. Why bother with (and spend the money on) a one-ramp "interchange"? I'm unaware of any major traffic generator – a business, sprawling school complex, warehouse park or whatever – south of 78 that would justify the lone off-ramp.
http://maps.google.com/maps?hl=en&ll=40.564062,-75.476734&spn=0.005256,0.008256&t=k&z=18
Quote from: Steve on March 12, 2013, 07:13:55 PM
PA I-78, WB exit 58: http://goo.gl/maps/0vhDs
:-P
Two exits east of NY 17, you have another one near the Thruway. The ramp from the Garden State Parkway to Old Nyack Turnpike. http://goo.gl/maps/YQ2tB
Quote from: Kacie Jane on March 15, 2013, 01:07:09 AM
Two exits east of NY 17, you have another one near the Thruway. The ramp from the Garden State Parkway to Old Nyack Turnpike. http://goo.gl/maps/YQ2tB
I'd call that part of the Thruway/NY 59 interchange. Or at least paired with the onramp from Old Nyack to the eastbound Thruway.
You know, somehow I had missed the on-ramp to the Thruway. But I still want to cling to some hope that this still counts, since the Thruway has it's own off ramp at exit 14.
Quote from: NE2 on March 14, 2013, 08:53:50 PM
Quote from: empirestate on March 14, 2013, 05:41:47 PM
I've never been sure about that; it does appear that old 17 saw some reconstruction, perhaps by the town or village, but I don't know for sure if it was ever transferred out of state maintenance. If not, then since it isn't a reference route, it must still be NY 17 at some level.
It's still state maintained as of 2007: http://ftp.dot.ny.gov/tdv/YR2007/R08/85_Rockland/85_0168.pdf
While that indeed may still be true, just because a road is still being state-maintained doesn't necessarily it has to be automatically signed w/a route number and marked as such. While the road carries 2-way traffic (at least until the alignment approaches the I-87/287 interchange), the only through-traffic it presently could only carry would be NY 17 southbounders (or
alternate NY 17 southbounders).
As you obviously know, the I-87/287 interchange literally cuts off any direct NY 17 northbound movements from I-287 onto the old road south of Exit 15A.
While the state may still refer to that short stretch as NY 17 for maintenance record/tracking purposes; in the eyes of the motoring public (as well as signs, maps and GPS systems), that piece of road is no longer considered part of the
through Route 17.
Quote from: PHLBOS on March 15, 2013, 09:02:59 AM
Quote from: NE2 on March 14, 2013, 08:53:50 PM
Quote from: empirestate on March 14, 2013, 05:41:47 PM
I've never been sure about that; it does appear that old 17 saw some reconstruction, perhaps by the town or village, but I don't know for sure if it was ever transferred out of state maintenance. If not, then since it isn't a reference route, it must still be NY 17 at some level.
It's still state maintained as of 2007: http://ftp.dot.ny.gov/tdv/YR2007/R08/85_Rockland/85_0168.pdf
While that indeed may still be true, just because a road is still being state-maintained doesn't necessarily it has to be automatically signed w/a route number and marked as such.
Exactly; that's precisely the point. It
isn't signed or marked as NY 17 (barring an errant old shield somewhere maybe), but it isn't numbered as anything else secretly either. Normally, if a route has been shifted off, NYSDOT will renumber the old alignment as a reference route (900-series number), though you might likely find the former number still on reference markers. In case, we have what I believe is New York's only secret touring route, or at least segment of one, which is why it's an interesting anomaly.
There's also the curious case of NY 12E. Heading south, signage indicates it goes on Paddy Hill Rd to end at NY 12F. Officially, according to the route log, it continues to end at NY 12 near Watertown. Paddy Hill Rd is a reference route. The official routing of NY 12E is Jefferson CR 191.
I have not been to Buffalo to see if signage now reflects that NY 324 is multiplexed with I-190 between exits 15 and 17 in addition to the Grand Island Bridges or if it still follows the old alignment on Grand Island Blvd. No signage for NY 324 exists on I-190 itself to show the multiplexes.
I thought of a couple more in Columbus.
I-270 northbound near Gahanna, there's an exit to Johnstown Rd (old US 62) which branches off the ramp to I-670 and US 62. I suspect it was originally meant to be an alternate means to reach Stelzer Rd, back when I-670 (then just US 62 I think) had a diamond interchange at Stelzer and traffic from I-270 NB would have had to cut across multiple lanes to reach Stelzer. But now that the main airport interchange has moved (and there's braiding for traffic coming from I-270 NB), plus more emphasis on using Hamilton Rd and Sawyer Rd when coming from the east, this little ramp to Johnstown Rd doesn't seem necessary.
The other example I thought of doesn't actually fit the thread when I think about it, but I'll leave the ramble here anyway...
Until last year, there was seemingly an odd ramp for I-71 SB to Leonard Ave / Jack Gibbs Blvd. I suppose it was probably a mate for Cleveland Ave to I-71 NB via I-670 EB. (Before the Northeast Freeway aka "new I-670" was built in the 90's, this was more obvious.) But in the new design for this interchange, that exit ramp to Leonard Ave is gone; the best functional replacement will be the ramp to Spring St / Lester Dr. But it will still be possible to go from Cleveland Ave to I-71 NB, though I'm not sure this will be an option advertized with BGS. (The one-lane ramp from I-670 EB to I-71 NB and the one-lane ramp from Cleveland Ave to I-670 EB will share a two-lane bridge over I-71. I don't know if ODOT intends to discourage lane changes on that bridge.) For some reason, there will also be a ramp from Cleveland Ave to I-71 SB. Oh, wait, I guess that's a mate for the ramp from I-71 NB to Leonard Ave – which didn't have a mate before.
Let's see if I can summarize the interaction between I-71 and Cleveland / Jack Gibbs / Leonard... 60's—90's: only missing a southbound entrance. 90's—10's: still missing southbound entrance, northbound entrance has to weave across I-670 EB. 10's—?: southbound entrance and northbound exit, or complete, depending on your interpretation.
Here's (http://maps.google.com/maps?ll=40.76863,-76.86651&spn=0.010758,0.022724&t=m&z=16) another one on US 15 (multiplexed with US 11 at this point) just south of Selinsgrove, PA. The ramp, along with South Market Street was the old US 11/15 alignment. South Market Street is two-way until the "reverse jughandle" (labeled as Sr2 9401) just before the ramp.
Quote from: Michael on March 16, 2013, 04:47:52 PM
Here's (http://maps.google.com/maps?ll=40.76863,-76.86651&spn=0.010758,0.022724&t=m&z=16) another one on US 15 (multiplexed with US 11 at this point) just south of Selinsgrove, PA. The ramp, along with South Market Street was the old US 11/15 alignment. South Market Street is two-way until the "reverse jughandle" (labeled as Sr2 9401) just before the ramp.
Sorry, beat you to it. :-) But thanks for the additional background info!
Quote from: empirestate on March 14, 2013, 09:08:53 AM
Quote from: PurdueBill on March 14, 2013, 12:00:07 AM
A similar transition from two-way to one-way at the entrance to the highway with that being the only movement is just short of the Connecticut line on I-84 WB (http://goo.gl/maps/KbEJO), also discussed around here in the recent past in some other thread. Of course, that road is an old alignment, not a cut-off crossroad, so maybe similar examples are more common.
Sure, you get that in Selinsgrove, PA: http://goo.gl/maps/lrx7G
Quote from: empirestate on March 16, 2013, 06:02:01 PM
Sorry, beat you to it. :-) But thanks for the additional background info!
Now I feel stupid. I was going to read the posts on that page of the thread later, but I guess I should have done it when I read the first two pages. Even worse is my PA 973 post (https://www.aaroads.com/forum/index.php?topic=8980.msg209519#msg209519), which had the same example in the post
directly above it. I just went back and edited it.
I-890 westbound onramp between exits 6 and 5 (Schenectady, NY)
In Arbutus, Baltimore County, Maryland, there is Exit 11A from the Outer Loop of I-695 (Baltimore Beltway) to southbound I-95.
But that ramp also features a "one movement only" ramp that takes traffic to Sulphur Spring Road, even though there is no return to I-695 (or I-95) at that point. Google Maps here (http://maps.google.com/maps?q=39.248872,-76.684706&hl=en&num=1&gl=us&t=m&z=15).
Return to I-695 (and then I-95) is via the interchange at Washington Boulevard (Exit 10, U.S. 1 Alt) in nearby Halethorpe. Google Maps here (http://maps.google.com/maps?q=39.244967,-76.673781&hl=en&num=1&gl=us&t=m&z=16). In a sense, that ramp to Sulphur Spring Road "completes" Exit 10, since there's no exit from the Outer Loop of 695 to U.S. 1 Alt.
I-84 Exit 24 Westbound (Harper's Ferry Rd) in Waterbury, CT is one. There is an exit eastbound in the area, but that is Exit 25, and serves Reidville Dr. There are talks that this exit will be eliminated in a (distant) future widening project,
Quote from: COLORADOrk on March 17, 2013, 06:40:18 AM
I-890 westbound onramp between exits 6 and 5 (Schenectady, NY)
IMO that's a gray area. It's clearly a part of the exit 5 interchange westbound, though it serves an un-related movement.
Quote from: COLORADOrk on March 17, 2013, 06:40:18 AM
I-890 westbound onramp between exits 6 and 5 (Schenectady, NY)
Interesting sub-category: single-movement ramp that isn't the only ramp in its interchange!
Also, not fitting the sub-category, but the Colvin St. onramp to I-81 NB seems to qualify, as Exit 17 just to the south has all its movements covered by four ramps.
US 101 at Sanjon Road (Exit 69) in Ventura, CA. There is no re-entry northbound and to get on 101 southbound you have to drive up to California Street to get back on.
Quote from: kphoger on March 12, 2013, 04:52:19 PM
Just south of Pearsall, TX, where I-35 crosses CR-4201, there is only a southbound entrance–no southbound exit, northbound entrance, or northbound exit.
That's actually an interesting one, because it's one of the rare sections of I-35 in Texas without a frontage road on one side (old US 81, now Spur 581, is east of the railroad tracks here). And I don't think this situation - a single ramp only - is repeated anywhere on I-35 south of DFW. I guess the presumption is anyone wanting to visit the small community here could exit at Pearsall or would be coming down Spur 581 from town; there's certainly no reason why TxDOT couldn't have built a SB offramp in the vicinity.
There's some similar stuff on the reconstructed section of I-35 north of Laredo (from Loop 20 north to the Uniroyal interchange) where whatever TxDOT ultimately has planned has meshed with what was already there to create a confusing mix of exits and entrances to the frontage roads with limited rhyme or reason – you have bits that look like ramp reversal designs, and bits that look like the old-style diamond + frontage road design, and bits that just make no sense whatsoever (my favorite is the random overpass that's not lined up with Killam Industrial Blvd, or anything else in the MPO plans as far as I can tell).
US 50 at Aerojet Road in Rancho Cordova, exit 22 (eastbound offramp only) -
http://maps.google.com/maps?q=Aerojet+Dr+%26+Folsom+Blvd,+Rancho+Cordova,+CA&hl=en&sll=38.631857,-121.208704&sspn=0.010577,0.018861&gl=us&hnear=Folsom+Blvd+%26+Aerojet+Dr,+Rancho+Cordova,+California+95742&t=m&z=16
Though access onto US 50 is provided by the nearby Hazel Avenue exit, this ramp sits alone by itself.
---
US 101/Bayshore Freeway Exit 433A, Vermont Street (northbound offramp only), right after Hospital Curve in SF:
http://maps.google.com/maps?q=Vermont+and+Mariposa,+San+Francisco&hl=en&ll=37.763285,-122.404068&spn=0.005352,0.009431&sll=37.764678,-122.404522&sspn=0.010704,0.018861&gl=us&hnear=Vermont+St+%26+Mariposa+St,+San+Francisco,+California&t=m&z=17
---
US 101/Bayshore Freeway Exit 417A (Dore Avenue) in San Mateo (northbound offramp only)
http://maps.google.com/maps?q=Dore+Avenue,+San+Mateo&hl=en&ll=37.577937,-122.32035&spn=0.003794,0.004715&sll=37.569668,-122.309289&sspn=0.010732,0.018861&t=h&gl=us&hnear=Dore+Ave,+San+Mateo,+California+94401&z=18
Possibly the most unquestionable example I've found yet: I-95 southbound onramp from Dedham St in, I believe, Canton, MA (https://maps.google.com/?ll=42.191597,-71.148963&spn=0.010795,0.026157&t=h&z=16). And, interestingly, you can't even access 95 from westbound Dedham St, only eastbound, as left turns are prohibited, plastic bollards were installer, and U-turns are prohibited at subsequent intersections.
Quote from: deathtopumpkins on March 21, 2013, 01:42:48 AM
Possibly the most unquestionable example I've found yet: I-95 southbound onramp from Dedham St in, I believe, Canton, MA (https://maps.google.com/?ll=42.191597,-71.148963&spn=0.010795,0.026157&t=h&z=16). And, interestingly, you can't even access 95 from westbound Dedham St, only eastbound, as left turns are prohibited, plastic bollards were installer, and U-turns are prohibited at subsequent intersections.
I already mentioned that one several posts back (Reply #39).
https://www.aaroads.com/forum/index.php?topic=8980.25 (https://www.aaroads.com/forum/index.php?topic=8980.25)
Ah, I had missed it previously!
damn, why are they so adamant about prohibiting the westbound Dedham St to southbound I-95 move?
Quote from: agentsteel53 on March 21, 2013, 12:44:55 PM
damn, why are they so adamant about prohibiting the westbound Dedham St to southbound I-95 move?
Guess on my part, but it would appear that the residences on the other/east side of I-95 did not want additional traffic running through their neighborhood as a means of getting to the ramp. Note the adjacent factories just west of the on-ramp. It's almost as if it was built with them in mind.
Quote from: TheStranger on March 19, 2013, 01:54:38 PM
US 50 at Aerojet Road in Rancho Cordova, exit 22 (eastbound offramp only) -
http://maps.google.com/maps?q=Aerojet+Dr+%26+Folsom+Blvd,+Rancho+Cordova,+CA&hl=en&sll=38.631857,-121.208704&sspn=0.010577,0.018861&gl=us&hnear=Folsom+Blvd+%26+Aerojet+Dr,+Rancho+Cordova,+California+95742&t=m&z=16
Though access onto US 50 is provided by the nearby Hazel Avenue exit, this ramp sits alone by itself.
---
US 101/Bayshore Freeway Exit 433A, Vermont Street (northbound offramp only), right after Hospital Curve in SF:
http://maps.google.com/maps?q=Vermont+and+Mariposa,+San+Francisco&hl=en&ll=37.763285,-122.404068&spn=0.005352,0.009431&sll=37.764678,-122.404522&sspn=0.010704,0.018861&gl=us&hnear=Vermont+St+%26+Mariposa+St,+San+Francisco,+California&t=m&z=17
---
US 101/Bayshore Freeway Exit 417A (Dore Avenue) in San Mateo (northbound offramp only)
http://maps.google.com/maps?q=Dore+Avenue,+San+Mateo&hl=en&ll=37.577937,-122.32035&spn=0.003794,0.004715&sll=37.569668,-122.309289&sspn=0.010732,0.018861&t=h&gl=us&hnear=Dore+Ave,+San+Mateo,+California+94401&z=18
If memory serves, wasn't there a NB 101 onramp at Dore that was removed? I remember going to a wedding in San Mateo about 15 years ago and we got lost in that area.
Speaking of NY 17 -- the ramp from old NY 17 westbound to the freeway at Parksville.
And "exit 83" is essentially a collection of these - the ramps for each movement are randomly scattered about in odd places.
And to add to the collection, Exit 20A on eastbound I-64 in West Virginia. Originally, Exit 20 was a full interchange with four ramps (full movements) to Mall Road, the access for Huntington Mall. Sometime after the mall and its exit was built, West Mall Road was built, which runs between the mall and US 60 and crosses over I-64. Mall Road was renamed East Mall Road and still has all four ramps (diamond for WB traffic, a folded diamond for EB traffic) and the ramp from EB I-64 was renamed Exit 20B. Exit 20A is a ramp from EB 64 to West Mall Road and is the only movement between West Mall Road and the interstate.
Quote from: JustDrive on March 22, 2013, 06:19:25 PM
If memory serves, wasn't there a NB 101 onramp at Dore that was removed? I remember going to a wedding in San Mateo about 15 years ago and we got lost in that area.
Shockingly, no:
http://www.historicaerials.com/aerials.php?scale=8E-06&lat=37.578942939033&lon=-122.321176&year=1956
On the Salisbury Bypass (US 13), there's a single offramp to Hobbs Rd:
http://goo.gl/maps/uX8fT
And near cpzilliacus' example is exit 12A which, while having an exit and entrance for Leeds Av, only has a single ramp for Southwestern Blvd (US 1):
http://goo.gl/maps/553Sp
Quote from: kj3400 on March 26, 2013, 12:51:56 PM
On the Salisbury Bypass (US 13), there's a single offramp to Hobbs Rd:
http://goo.gl/maps/uX8fT
Question regarding that interchange: what was the reasoning behind removing 2 of those cloverleaf ramps and replacing them w/left-turn, at-grade crossings w/no signals? It increases the number of crossing conflicts.
Quote from: PHLBOS on March 26, 2013, 01:00:44 PM
Quote from: kj3400 on March 26, 2013, 12:51:56 PM
On the Salisbury Bypass (US 13), there's a single offramp to Hobbs Rd:
http://goo.gl/maps/uX8fT
And near cpzilliacus' example is exit 12A which, while having an exit and entrance for Leeds Av, only has a single ramp for Southwestern Blvd (US 1):
http://goo.gl/maps/553Sp
Question regarding that interchange: what was the reasoning behind removing 2 of those cloverleaf ramps and replacing them w/left-turn, at-grade crossings w/no signals? It increases the number of crossing conflicts.
I haven't the slightest. But I suppose they didn't want weaving issues for US 50 eastbound traffic, as both those removed ramps would have caused problems for them.
Quote from: kj3400 on March 26, 2013, 01:14:54 PM
Quote from: PHLBOS on March 26, 2013, 01:00:44 PM
Question regarding that interchange: what was the reasoning behind removing 2 of those cloverleaf ramps and replacing them w/left-turn, at-grade crossings w/no signals? It increases the number of crossing conflicts.
I haven't the slightest[/u]. But I suppose they didn't want weaving issues for US 50 eastbound traffic, as both those removed ramps would have caused problems for them.
It was certainly to avoid weaving issues (So you had "the slightest")
Apparently when they re-did it, they didn't think signals were needed for those movements. Kind of interesting, the US-50 W --> US-13 S left only has a "Yield" across the eastbound carriageway (and allows for a U-turn), while the left-turn to US-13 N / US-50 W has a STOP to cross the westbound carriageway. I'd guess it has something to do with the density of trees in the median creating visibility issues and/or traffic volumes.
Spotted this on my recent trip to the northeast. Don't know if it has been mentioned upthread or not and I'm not inclined to wade through four pages to check.
http://goo.gl/maps/njRFW
Ramp to I-684 southbound.
Quote from: hbelkins on June 06, 2013, 03:33:26 PM
Spotted this on my recent trip to the northeast. Don't know if it has been mentioned upthread or not and I'm not inclined to wade through four pages to check.
http://goo.gl/maps/njRFW
Ramp to I-684 southbound.
There's a matching northbound exit (6A).
This used to qualify more than it does now: southbound I-35 to 37th Avenue in Kansas City, Kansas:
http://maps.google.com/?ll=39.061841,-94.626939&spn=0.004332,0.010568&t=m&z=17
It used to be a separate ramp with (I think) its own exit number, but a few years ago, it was reconfigured to be a ramp that exits from the ramp to Southwest Boulevard and Mission Road.
This has got to be the newest example: NJ Turnpike, at the newly reconstructed Exit 8. After the tollbooths, the highway continues on into the NJ-133 freeway, passing an SPUI with NJ-33 (if the overpass isn't open yet, it should be soon). Yet there is a lone ramp from the NJ-133 lead-in, to NB Milford Rd. I think some earlier concept diagrams had a full interchange there.
Quote from: lepidopteran on June 14, 2013, 03:08:25 PM
This has got to be the newest example: NJ Turnpike, at the newly reconstructed Exit 8. After the tollbooths, the highway continues on into the NJ-133 freeway, passing an SPUI with NJ-33 (if the overpass isn't open yet, it should be soon). Yet there is a lone ramp from the NJ-133 lead-in, to NB Milford Rd. I think some earlier concept diagrams had a full interchange there.
Eh... the intersection's 500 feet away, and this one ramp cuts off the only movement that requires two signalized left turns. Not sure I'd call it a separate interchange.
I know of two places in Arkansas, but one has been closed, and the exit moved up the highway.
Exit 124 on I-40 used to be a 1/4 interchange, you could get off going East, and that was it. They built a new complete interchange about a 1/2 mile west, so this little off-ramp was destroyed.
The one that still exists is about a mile past Exit 135 on I-40, it is a 1/4 interchange where you can get on I-40 going East, and that's it.
Exit 78 on I-40 for many years was a weird 1/2 interchange where you could get off going east, and get on going west, but that was it. They finally completed that one a few years ago.
Quote from: ChoralScholar on June 26, 2013, 11:20:34 PM
Exit 78 on I-40 for many years was a weird 1/2 interchange where you could get off going east, and get on going west, but that was it. They finally completed that one a few years ago.
That pattern of access is quite common in half-interchanges, but how many are there where you can only get on and off in the
same direction, particularly where no other nearby interchange makes up the missing movements?
Quote from: empirestate on June 27, 2013, 03:11:11 AM
That pattern of access is quite common in half-interchanges, but how many are there where you can only get on and off in the same direction, particularly where no other nearby interchange makes up the missing movements?
Anza Boulevard (Exit 419A) at US 101/Bayshore Freeway northbound in Burlingame, CA:
https://maps.google.com/maps?q=Anza+Boulevard,+Burlingame,+CA&hl=en&ll=37.587779,-122.35141&spn=0.006546,0.008626&sll=37.269174,-119.306607&sspn=13.451622,17.666016&oq=Anza+Boule&hnear=Anza+Blvd,+Burlingame,+San+Mateo,+California+94010&t=m&z=17
Quote from: deathtopumpkins on March 21, 2013, 01:42:48 AM
Possibly the most unquestionable example I've found yet: I-95 southbound onramp from Dedham St in, I believe, Canton, MA (https://maps.google.com/?ll=42.191597,-71.148963&spn=0.010795,0.026157&t=h&z=16). And, interestingly, you can't even access 95 from westbound Dedham St, only eastbound, as left turns are prohibited, plastic bollards were installer, and U-turns are prohibited at subsequent intersections.
The rationale for this ramp was for traffic from the University Avenue area seeking I-95 south that would otherwise get on at the I-95 (or as some still call it, MA 128) University Ave interchange to use the I-95 SB ramps in Canton. Note that MassDOT has plans to build an exit ramp from I-95 NB to Dedham Street, including providing signals at both the new I-95 northbound exit ramp and the existing entrance ramp to I-95 south. So the Canton Street NB to I-95 SB movement will eventually be possible.
Quote from: Ian on March 12, 2013, 03:18:05 PM
There is an entrance to I-84 westbound from Mashapaug Road south of Sturbridge, MA.
Note that Mashapaug Road has a full interchange with I-84 (Exit 1) north of there. Still, it's is about three miles away from this entrance ramp, so I guess the SB on ramp at the CT border technically qualifies.
Quote from: roadman on June 27, 2013, 03:34:12 PMNote that MassDOT has plans to build an exit ramp from I-95 NB to Dedham Street, including providing signals at both the new I-95 northbound exit ramp and the existing entrance ramp to I-95 south. So the Canton Street NB to I-95 SB movement will eventually be possible.
Depending on when that new exit ramp off I-95 NB is actually built; those 2 ramps (the existing SB on-ramp and the proposed NB off-ramp) will be the new Exit 11C or Exit 25-post-MMB* Exit numbering.
* Mile-Marker-Based
For many years, the Christian Lane interchange with then-CT Route 72 in Berlin, CT had only one ramp from Christian Lane to then-westbound CT Route 72. Then the road became part of CT Route 9 around 1990. Soon after that, an off ramp from CT Route 9 South to Christian Lane was added. To this day, there are no off ramps from CT Route 9 North or on ramp to CT Route 9 South.
Quote from: PHLBOS on June 27, 2013, 04:00:57 PM
Quote from: roadman on June 27, 2013, 03:34:12 PMNote that MassDOT has plans to build an exit ramp from I-95 NB to Dedham Street, including providing signals at both the new I-95 northbound exit ramp and the existing entrance ramp to I-95 south. So the Canton Street NB to I-95 SB movement will eventually be possible.
Depending on when that new exit ramp off I-95 NB is actually built; those 2 ramps (the existing SB on-ramp and the proposed NB off-ramp) will be the new Exit 11C or Exit 25-post-MMB* Exit numbering.
* Mile-Marker-Based
According to MassDOT's project information system, the Dedham Street ramp project is at 75% design, but is not scheduled for advertisement (letting for bids) until February of 2019. So, based on what I've heard about the mile marker exit number implementation schedule, it's entirely possible the I-95 numbers will be converted before the new Dedham Street signs are installed.
Quote from: empirestate on June 27, 2013, 03:11:11 AM
Quote from: ChoralScholar on June 26, 2013, 11:20:34 PM
Exit 78 on I-40 for many years was a weird 1/2 interchange where you could get off going east, and get on going west, but that was it. They finally completed that one a few years ago.
That pattern of access is quite common in half-interchanges, but how many are there where you can only get on and off in the same direction, particularly where no other nearby interchange makes up the missing movements?
It just seems odd to me. The hardest part to build is the overpass. Once you've built the overpass, why not go ahead and make it a full interchange?
The overpass is already going to be there because two roads are crossing. The half-interchange arises when projected traffic pattens to and from one end of the freeway justify an interchange, but there's almost no projected traffic to and from the other end. Such assymmetry is usually caused by a nearby large city along the freeway in one direction, and a lack of cities for a long distance in the other direction.
Sometimes half-interchanges pop up in urban areas too, usually serving commuter traffic. They can often be placed very near another interchange without creating weaving conditions. (See I-70 west of downtown Columbus.)
Quote from: Brandon on March 12, 2013, 06:41:37 AM
There are only southbound entrances from LaGrange Road (US-12/20/45) and Archer Avenue (IL-171).
Balmoral also only had a southbound only entrance until recently when it got a northbound exit.
I-55 is the other links to LaGrange Road and Archer Avenue are
Exit 180A on I-24 in Chattanooga. It's a loop ramp from eastbound I-24 to Lee Highway and Central Avenue.
https://maps.google.com/?ll=35.02404,-85.298924&spn=0.010174,0.019119&t=m&z=16
In Columbus, how about I-70 E to 18th St? If this has a mate, it's the ramp from Parsons & Main to I-71 N, but... that's to I-71 N, not I-70 W. Opinions?
Quote from: vtk on July 08, 2013, 07:35:19 AM
In Columbus, how about I-70 E to 18th St? If this has a mate, it's the ramp from Parsons & Main to I-71 N, but... that's to I-71 N, not I-70 W. Opinions?
Its other half is Main Street to I-71 south. In effect there's a full interchange between I-71 and Main/18th.
Also: WTF Mooberry?
Quote from: NE2 on July 08, 2013, 08:11:00 AM
Quote from: vtk on July 08, 2013, 07:35:19 AM
In Columbus, how about I-70 E to 18th St? If this has a mate, it's the ramp from Parsons & Main to I-71 N, but... that's to I-71 N, not I-70 W. Opinions?
Its other half is Main Street to I-71 south. In effect there's a full interchange between I-71 and Main/18th.
Also: WTF Mooberry?
Ahh, you're right. (You know, I've been looking at plans for the rebuild so much lately, I think sometimes I forget how the current interchange functions. Or maybe it's just because I rarely get on or off there.)
And I wish I knew the story behind the naming of Mooberry St.
Quote from: empirestate on June 27, 2013, 03:11:11 AM
Quote from: ChoralScholar on June 26, 2013, 11:20:34 PM
Exit 78 on I-40 for many years was a weird 1/2 interchange where you could get off going east, and get on going west, but that was it. They finally completed that one a few years ago.
That pattern of access is quite common in half-interchanges, but how many are there where you can only get on and off in the same direction, particularly where no other nearby interchange makes up the missing movements?
Midwest Road on I-88 is an eastbound exit/westbound entrance only interchange. The missing movements are made up at IL-83 and Spring Road, about a mile to the east. Interestingly enough, Spring Road is also a RIRO for westbound exit/eastbound entrance only, but some of the missing movements are made up at the IL-83 interchange about a half mile west.
In West Los Angeles, I-405 has a northbound exit to Montana Ave. No corresponding northbound entrance or southbound exit or entrance at Montana.
When the freeway was first constructed, there was a southbound exit and southbound entrance at Waterford Street that essentially corresponded to the Montana exit, but relatively recently those ramps to Waterford Street were removed due to neighborhood complaints of traffic.
Arguably some places on US 1 between Boston and Saugus. I'm calling it arguable because some can be argued either way for if two are for the same exit or not.
This has probably been mentioned by VTK, but the exit from OH Route 315 to Broad Street (US 40), although it is only accessible from I-670 West and US 33
Quote from: 1 on December 04, 2013, 03:38:40 PM
Arguably some places on US 1 between Boston and Saugus. I'm calling it arguable because some can be argued either way for if two are for the same exit or not.
Looking over US 1 (Northeast Expressway section in particular) and its ramps in that area, just about every one of them is complemented with either another ramp (in a different direction) not too far from the area.
The reason why some of the ramp connection points with the local streets area placed as such is due to either streets being one-way or the fact that these streets pre-dated the existence of the Northeast Expressway and building conventionally-styled interchanges would've meant more land takings as well as more takings of homes and businesses.
There is an interchange on I-295 between Freeport and Bunswick, ME that is on/off for only the NB side of 295, with no connection with the SB lanes at all. It connects to US-1 which is paralell to the interstate next to the NB lanes.
Quote from: Beeper1 on December 04, 2013, 11:37:16 PM
There is an interchange on I-295 between Freeport and Bunswick, ME that is on/off for only the NB side of 295, with no connection with the SB lanes at all. It connects to US-1 which is paralell to the interstate next to the NB lanes.
That's a two-movement RIRO. US 50-301 east of the Chesapeake Bay Bridge is full of them, sometimes with nearby overpasses and sometimes not.
https://maps.google.com/?ll=40.910938,-73.785666&spn=0.002903,0.006539&t=m&z=18&layer=t
Division Street onto SB I-95 (New England Thruway) in New Rochelle, NY
Quote from: spmkam on December 04, 2013, 11:57:05 PM
https://maps.google.com/?ll=40.910938,-73.785666&spn=0.002903,0.006539&t=m&z=18&layer=t
Division Street onto SB I-95 (New England Thruway) in New Rochelle, NY
That's part of exit 16.
But the more obvious entrance point is from a different spot.
Quote from: spmkam on December 05, 2013, 02:47:13 PM
But the more obvious entrance point is from a different spot.
Not if you're coming from the northwest side of I-95. Look at it as a single two-way road, Memorial/River/Cedar, intersecting I-95, and it's a 6-ramp parclo.
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fi.imgur.com%2FqIbVQSu.png&hash=78a48ed3a141d1305c0df9d6e68ac59abf35ce17)
Quote from: NE2 on December 05, 2013, 03:14:28 PM
Quote from: spmkam on December 05, 2013, 02:47:13 PM
But the more obvious entrance point is from a different spot.
Not if you're coming from the northwest side of I-95. Look at it as a single two-way road, Memorial/River/Cedar, intersecting I-95, and it's a 6-ramp parclo.
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fi.imgur.com%2FqIbVQSu.png&hash=78a48ed3a141d1305c0df9d6e68ac59abf35ce17)
I'd count it as a one-movement.
The grade separation at Memorial and North puts it clearly in the 'part of the same interchange' category for me.
Quote from: Steve on December 05, 2013, 07:02:35 PM
Quote from: NE2 on December 05, 2013, 03:14:28 PM
Quote from: spmkam on December 05, 2013, 02:47:13 PM
But the more obvious entrance point is from a different spot.
Not if you're coming from the northwest side of I-95. Look at it as a single two-way road, Memorial/River/Cedar, intersecting I-95, and it's a 6-ramp parclo.
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fi.imgur.com%2FqIbVQSu.png&hash=78a48ed3a141d1305c0df9d6e68ac59abf35ce17)
I'd count it as a one-movement.
It's somewhat similar to the I-88 westbound entrance ramp off Butterfield Road (IL-56) (https://maps.google.com/maps?hl=en&ll=41.831872,-88.014886&spn=0.009225,0.021136&t=h&z=16) in Downers Grove, Illinois. It's a one-movement only ramp (due to the distance away from Highland Avenue), but functions also as the entrance for Highland Avenue as well.
I found this by accident on Google looking for something for the "closed exits" thread, but the ramps I was thinking of have since been demolished.
But the West Seattle Bridge as an EB-off-only for 4th Ave S. https://goo.gl/maps/BCQ1A
Also, just northeast of there, I-5 has a SB-off-only for Forest Street.
The northern junction between I-69 and I-469 in Fort Wayne strikes me as odd, simply because of the one long ramp to Auburn Rd from 469. To get from 69 to Auburn, or to get from Auburn to 69 or 469, traffic would have to use the nearby interchange with Dupont Rd.
I think there's a hospital at the end of that ramp
At kilometer 179 of NB1, the old alignment of NB1 was left in place to serve as a WB onramp.
Quote from: yakra on January 02, 2014, 11:19:47 PM
At kilometer 179 of NB1, the old alignment of NB1 was left in place to serve as a WB onramp.
Much like old NY 17 at I-287. Which has probably been mentioned in this thread (and is close enough to other interchanges that it's arguably not a separate interchange).