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National Boards => General Highway Talk => Topic started by: ethanhopkin14 on February 11, 2021, 01:32:56 PM

Title: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: ethanhopkin14 on February 11, 2021, 01:32:56 PM
Since I was a kid I was fascinated with this road that crosses I-20:

https://goo.gl/maps/6qL7L1AzUgk3KgUw5 (https://goo.gl/maps/6qL7L1AzUgk3KgUw5)

I know a lot of times a cross street might go over one carriageway and under the other because of discrepancies in terrain of the carriageways, but this particular situation seems like it was deliberately done that way.  The land is very flat and the road goes abnormally up to cross the eastbound I-20 lanes then drops down to go under the westbound lanes.  I-20 in this area usurped US-80, but the alignment is several miles north of I-20 so there wasn't any direct upgrade.  I-20 ran on a brand new alignment so not really sure why they chose to do this. 

Anyway, back to the topic, I want to see any other examples of this.  It can be because of logistic reasons (not because it was on purpose).
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: hotdogPi on February 11, 2021, 01:34:10 PM
I-495 and MA 24 (both freeways)
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: silverback1065 on February 11, 2021, 01:36:46 PM
Morris st and prospect street and i-65 in downtown indy

Pixel 5

Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: kphoger on February 11, 2021, 01:41:38 PM
Man, I know we've had a conversation about this topic, but I can't find the thread at the moment.
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: TheHighwayMan3561 on February 11, 2021, 02:34:17 PM
I-39/90/94 and Smokey Hollow Road near Poynette, WI.

https://goo.gl/maps/iAXJhgoJkvz52cvn6
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: mgk920 on February 11, 2021, 02:49:29 PM
Quote from: TheHighwayMan394 on February 11, 2021, 02:34:17 PM
I-39/90/94 and Smokey Hollow Road near Poynette, WI.

https://goo.gl/maps/iAXJhgoJkvz52cvn6

It's tough to see from the highway, but Funnel Rd goes over the eastbound side and under the westbound side of I-90/94 just west of Camp Douglas, WI, too.

Mike
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: webny99 on February 11, 2021, 03:16:46 PM
Quote from: kphoger on February 11, 2021, 01:41:38 PM
Man, I know we've had a conversation about this topic, but I can't find the thread at the moment.

I'm sure we have too. I'm equally sure that I'm going to suddenly remember the examples that I can't think of right now.
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: mgk920 on February 11, 2021, 03:30:45 PM
Quote from: webny99 on February 11, 2021, 03:16:46 PM
Quote from: kphoger on February 11, 2021, 01:41:38 PM
Man, I know we've had a conversation about this topic, but I can't find the thread at the moment.

I'm sure we have too. I'm equally sure that I'm going to suddenly remember the examples that I can't think of right now.

I think that it was about 'over/under' crossings.

Mike
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: wanderer2575 on February 11, 2021, 04:53:08 PM
US-24 at M-10 in Southfield, MI.
https://goo.gl/maps/Ffo8yiQ23zAD3M2o9

M-10 at M-8 in Detroit, MI.
https://goo.gl/maps/AwukTepxW9mYicUi6

Northern terminus of US-24 at I-75 in Clarkston, MI.
https://goo.gl/maps/BZUb3qGED8M75V5W8

Of course, I-196 at US-131 in downtown Grand Rapids, MI.
https://goo.gl/maps/B8DX6kkLun3qZaGR8

I-94 at the railroad crossing east of Kalmbach Road in Chelsea, MI.  What is now the westbound I-94 carriageway used to be part of the US-12 bypass.  I'm guessing that when the eastbound carriageway was constructed later, it was easier to bridge over the railroad than to reroute the track and bridge over the freeway.
https://goo.gl/maps/dbqx9sLCiAuQ2FWdA

Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: kphoger on February 11, 2021, 05:00:01 PM
Quote from: mgk920 on February 11, 2021, 03:30:45 PM

Quote from: webny99 on February 11, 2021, 03:16:46 PM

Quote from: kphoger on February 11, 2021, 01:41:38 PM
Man, I know we've had a conversation about this topic, but I can't find the thread at the moment.

I'm sure we have too. I'm equally sure that I'm going to suddenly remember the examples that I can't think of right now.

I think that it was about 'over/under' crossings.

Found it!  Divided highways with weird off grade intersections. (https://www.aaroads.com/forum/index.php?topic=21253.msg2264083#msg2264083)

The one I thought of is in that thread:  I-35 @ Cesar Chavez St (Austin, TX)
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: SkyPesos on February 11, 2021, 05:00:33 PM
I-64 and Grand Blvd (https://www.google.com/maps/@38.6314469,-90.2357377,3a,30.4y,75.21h,96.3t/data=!3m6!1e1!3m4!1sHhQs_bKjB5SoEam2Rzw0JQ!2e0!7i16384!8i8192)

This one has no exit ramps, but worth mentioning: Ohio Turnpike and I-271 (https://www.google.com/maps/@41.2528053,-81.5860828,254m/data=!3m1!1e3)
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: ran4sh on February 11, 2021, 05:01:04 PM
The old configuration of SR 400 at I-285. I-285 went over 400 NB but under 400 SB. The roads are still in this configuration for now, although I don't know when that will change.

After the current construction project is complete, SR 400 will be over I-285, each direction.
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: ethanhopkin14 on February 11, 2021, 05:08:08 PM
Quote from: kphoger on February 11, 2021, 05:00:01 PM
Quote from: mgk920 on February 11, 2021, 03:30:45 PM

Quote from: webny99 on February 11, 2021, 03:16:46 PM

Quote from: kphoger on February 11, 2021, 01:41:38 PM
Man, I know we've had a conversation about this topic, but I can't find the thread at the moment.

I'm sure we have too. I'm equally sure that I'm going to suddenly remember the examples that I can't think of right now.

I think that it was about 'over/under' crossings.

Found it!  Divided highways with weird off grade intersections. (https://www.aaroads.com/forum/index.php?topic=21253.msg2264083#msg2264083)

The one I thought of is in that thread:  I-35 @ Cesar Chavez St (Austin, TX)

Yeah, that one was a case of the old East Ave. going solely under 1st Street.  Then when they widened I-35, they decided not to widen the 1st Street overpass, and elected to elevate the northbound lanes, so now they cross over.   
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: 1995hoo on February 11, 2021, 05:11:43 PM
I-395 at the Capital Beltway (I-495, at the relevant location) in Virginia: The Beltway's Outer Loop passes over I-395, while the Inner Loop passes under. I-95 passes through that interchange but doesn't qualify because it's on two flyovers that pass over everything. https://www.google.com/maps/@38.7915237,-77.1761742,17.5z

Just south of there, Secondary Route 644 (Old Keene Mill/Franconia Roads) passes over southbound I-95 and the HO/T lanes and passes under northbound I-95 and I-395.* https://www.google.com/maps/@38.7789859,-77.1806564,17.5z

*Before any hypertechnical types jump on me, I'm not 100% certain where exactly I-395 "technically" begins, but the roads are quite reasonably signed to imply I-395 begins just south of Route 644 because northbound I-95 splits off to the left at that point onto what becomes the flyover carrying I-95 onto the Beltway.
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: AlexandriaVA on February 11, 2021, 05:29:09 PM
With respect to your asterisk (off-topic, I know).

I think you'd agree that I-95 continues with the left two lanes in Springfield (https://www.google.com/maps/@38.7742768,-77.181287,3a,37.5y,21.07h,87.8t/data=!3m6!1e1!3m4!1sOGgXPlDCXrItz-vk40vlbA!2e0!7i13312!8i6656). So I-395 *could* start there, at the earliest.

I wouldn't say it starts any sooner south of there, unless it's an unsigned multiplex.

I personally like the idea of it starting there at the split.

I'm guessing VDOT's general public answer is that it it starts "north" of the interchange without getting into hyper-precise location details.

Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: bit0mike on February 11, 2021, 06:15:48 PM
I-65 exit 104 in TN.
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: Hot Rod Hootenanny on February 11, 2021, 06:46:08 PM
I guess I-71 & I-670 in Columbus.
https://www.google.com/maps/@39.9766778,-82.9832714,2116m/data=!3m1!1e3?hl=en
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: TheGrassGuy on February 11, 2021, 07:32:02 PM
I-287 and I-80 in Parsippany, New Jersey
I-91 and I-84 Hartford, Connecticut
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: Revive 755 on February 11, 2021, 10:12:17 PM
* I-40 at Airport Road near Rockwood, TN (https://goo.gl/maps/BhtBnStCsNbNq4Qv7)
* Used to be one on I-40 at East 5th Avenue as part of the interchange with TN 158 in Knoxville
* I-64/I-77 at Sandbranch Road (https://goo.gl/maps/VuqhE9s8sUGrpVyp7)
* US 40 at Grand in St. Louis (https://goo.gl/maps/2qbvnNbUmaAAVmH27)
* I-44 at Gravois Avenue in St. Louis (https://goo.gl/maps/zNDFhwunDTKmEUta8)
* I-55 at Missouri Avenue (https://goo.gl/maps/cXVVKk2axskkgws56) and St. Clair Avenue (https://goo.gl/maps/zitX8H3rh5ri4esa9) in East St. Louis.
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: CtrlAltDel on February 11, 2021, 10:30:09 PM
Not the most impressive example, but here's exit 224 on I-84 in Oregon, at the top of Cabbage Hill:

(https://i.imgur.com/CwujzsE.png) (https://www.google.com/maps/@45.5800284,-118.5928578,338m/data=!3m1!1e3)
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: webny99 on February 11, 2021, 11:34:34 PM
Quote from: kphoger on February 11, 2021, 05:00:01 PM
Found it!  Divided highways with weird off grade intersections. (https://www.aaroads.com/forum/index.php?topic=21253.msg2264083#msg2264083)

Thanks for the find! I figured it must not have used the words "over/under" or I would have found it... and sure enough.

I actually stated in that thread that I didn't know of any examples in my area, only to encounter the below post several replies later:

Quote from: WNYroadgeek on June 27, 2019, 12:00:11 AM
The I-390/I-490/NY 390 interchange in Rochester (390 north crosses over 490, 390 south crosses under it): https://www.google.com/maps/@43.1573532,-77.6800112,709m/data=!3m1!1e3

My goodness, what a glaring one to forget about, both then and now. I literally looked right at that interchange on Google Maps today while thinking about this thread and got so caught up in the forest (the left hand ramps, none of which cross both carriageways) that I completely missed the trees.

A few years from now, this will be a former example, as 390 southbound is being reconstructed and the new route will take it over I-490 next to its northbound counterpart (the current southbound road that goes under I-490 will essentially serve as a glorified service road). Here (https://www.aaroads.com/forum/index.php?topic=21278.0) is the project thread, and here (https://www.dot.ny.gov/content/delivery/region4/projects/439013-Home/439013-Repository/439013_PrefAltA2dwg.pdf) is the full plan for the interchange.
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: roadman65 on February 11, 2021, 11:36:34 PM
NJ Turnpike at US 9.  When US 9 was the route for Exit 11 it's SB crossed over US 9 while NB under it.  Now the SB. Truck lanes only go over US 9 while NB goes under with the SB car lanes. 
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: froggie on February 12, 2021, 12:11:46 AM
Surprised this one didn't get mentioned in the old thread, but here in Vermont we have I-91 Exit 22 on the north side of St. Johnsbury.  It's built into the side of a hill, with NB 91 passing under and SB 91 passing over the side road locally known as Hospital Dr, but officially known as the unnumbered "St. Johnsbury State Highway", a VTrans-maintained connector between I-91 and US 5.
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: webny99 on February 12, 2021, 08:48:22 AM
If we're counting non-road crossings, I stumbled across this this railroad crossing (https://www.google.com/maps/@35.3890492,-101.8327007,3a,23.3y,343.74h,89.94t/data=!3m7!1e1!3m5!1szhvUi4sU5U-MvXZuz5MkgQ!2e0!6s%2F%2Fgeo1.ggpht.com%2Fcbk%3Fpanoid%3DzhvUi4sU5U-MvXZuz5MkgQ%26output%3Dthumbnail%26cb_client%3Dmaps_sv.tactile.gps%26thumb%3D2%26w%3D203%26h%3D100%26yaw%3D161.45464%26pitch%3D0%26thumbfov%3D100!7i16384!8i8192!5m1!1e1) north of Amarillo in which northbound US 87 goes under the tracks while southbound US 87 goes over them.
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: ethanhopkin14 on February 12, 2021, 10:09:29 AM
Quote from: webny99 on February 12, 2021, 08:48:22 AM
If we're counting non-road crossings, I stumbled across this this railroad crossing (https://www.google.com/maps/@35.3890492,-101.8327007,3a,23.3y,343.74h,89.94t/data=!3m7!1e1!3m5!1szhvUi4sU5U-MvXZuz5MkgQ!2e0!6s%2F%2Fgeo1.ggpht.com%2Fcbk%3Fpanoid%3DzhvUi4sU5U-MvXZuz5MkgQ%26output%3Dthumbnail%26cb_client%3Dmaps_sv.tactile.gps%26thumb%3D2%26w%3D203%26h%3D100%26yaw%3D161.45464%26pitch%3D0%26thumbfov%3D100!7i16384!8i8192!5m1!1e1) north of Amarillo in which northbound US 87 goes under the tracks while southbound US 87 goes over them.

I drove this part of US-87 in December for the first time.  I think there was construction there to make the northbound lanes cross over the railroad with the southbound lanes.  I could be wrong, as I might be getting it confused with loads of other construction I encountered on the trip!
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: jmacswimmer on February 12, 2021, 10:15:59 AM
-I-95 & MD 32 (https://www.google.com/maps/@39.1583624,-76.8267934,896m/data=!3m1!1e3?hl=en) (plus Guilford Road immediately northeast of the interchange) in Jessup MD
-I-290 & Reservoir St (https://www.google.com/maps/@42.3307695,-71.6899221,403m/data=!3m1!1e3?hl=en) to the east of Worcester MA.
-I-84 & US 20 in Sturbridge MA (https://www.google.com/maps/@42.1152912,-72.0785229,624m/data=!3m1!1e3?hl=en) - this one is interesting because both directions of I-84 cross over US 20 EB, but then I-84 EB descends to cross under US 20 WB while I-84 WB ascends over US 20 WB.
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: 1995hoo on February 12, 2021, 10:48:49 AM
Quote from: AlexandriaVA on February 11, 2021, 05:29:09 PM
With respect to your asterisk (off-topic, I know).

I think you'd agree that I-95 continues with the left two lanes in Springfield (https://www.google.com/maps/@38.7742768,-77.181287,3a,37.5y,21.07h,87.8t/data=!3m6!1e1!3m4!1sOGgXPlDCXrItz-vk40vlbA!2e0!7i13312!8i6656). So I-395 *could* start there, at the earliest.

I wouldn't say it starts any sooner south of there, unless it's an unsigned multiplex.

I personally like the idea of it starting there at the split.

I'm guessing VDOT's general public answer is that it it starts "north" of the interchange without getting into hyper-precise location details.

I don't want to go too far off-topic, so I'll simply note that the segment between Route 644 and the Beltway still has at least one I-95 milepost and has "Exit 170" tabs on the BGSs, including for the straight-thru movement where the highway crosses the Beltway. If it were I-395, I'd expect to see an "Exit 1" tab for the ramp towards Tysons and no "exit" designation for the straight-thru movement. Whether that whole segment there is to be deemed an "exit" that then splits to I-395 and the Inner Loop is for a different discussion.
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: ErmineNotyours on February 15, 2021, 08:46:49 PM
Another railroad example:

US 195 (https://goo.gl/maps/Yqr6w1qnoro4AE7HA)
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: Tom958 on February 15, 2021, 09:03:40 PM
Quote from: ran4sh on February 11, 2021, 05:01:04 PM
The old configuration of SR 400 at I-285. I-285 went over 400 NB but under 400 SB. The roads are still in this configuration for now, although I don't know when that will change.

After the current construction project is complete, SR 400 will be over I-285, each direction.

Originally, 400 was to pass over 285, with the original bridge for 285 over northbound 400 retained to serve the eastbound to northbound and northbound to westbound ramps. The design was changed, though: Now 400 will pass under 285.

I feel like there's an on-topic example that I know of, but I can't place it.  :banghead:
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: Big John on February 15, 2021, 09:21:22 PM
^^ there is a creek in that area, so they scrapped that proposal..
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: Steve.S on February 15, 2021, 10:35:06 PM
I-75 at E Galbraith Rd in Cincinnati: 

https://goo.gl/maps/sUGzrKtdR4oyKj9n9 (https://goo.gl/maps/sUGzrKtdR4oyKj9n9)
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: CtrlAltDel on February 15, 2021, 10:58:41 PM
Quote from: Steve.S on February 15, 2021, 10:35:06 PM
I-75 at E Galbraith Rd in Cincinnati: 

https://goo.gl/maps/sUGzrKtdR4oyKj9n9 (https://goo.gl/maps/sUGzrKtdR4oyKj9n9)

It also holds for the railroad.
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: ethanhopkin14 on February 16, 2021, 08:57:16 AM
Quote from: CtrlAltDel on February 15, 2021, 10:58:41 PM
Quote from: Steve.S on February 15, 2021, 10:35:06 PM
I-75 at E Galbraith Rd in Cincinnati: 

https://goo.gl/maps/sUGzrKtdR4oyKj9n9 (https://goo.gl/maps/sUGzrKtdR4oyKj9n9)

It also holds for the railroad.

I never knew about this situation!!  There is an entire neighborhood in the median of I-75!
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: roadman65 on February 16, 2021, 10:01:29 AM
I-77 and I-70 near Cambridge, OH.
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: ethanhopkin14 on February 16, 2021, 10:09:32 AM
Capital of Texas Highway (Loop 360) at Mopac (Loop 1)  https://goo.gl/maps/8giGg56C3YqbyJ1EA (https://goo.gl/maps/8giGg56C3YqbyJ1EA)
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: MCRoads on February 16, 2021, 10:46:54 AM
Quote from: webny99 on February 12, 2021, 08:48:22 AM
If we're counting non-road crossings, I stumbled across this this railroad crossing (https://www.google.com/maps/@35.3890492,-101.8327007,3a,23.3y,343.74h,89.94t/data=!3m7!1e1!3m5!1szhvUi4sU5U-MvXZuz5MkgQ!2e0!6s%2F%2Fgeo1.ggpht.com%2Fcbk%3Fpanoid%3DzhvUi4sU5U-MvXZuz5MkgQ%26output%3Dthumbnail%26cb_client%3Dmaps_sv.tactile.gps%26thumb%3D2%26w%3D203%26h%3D100%26yaw%3D161.45464%26pitch%3D0%26thumbfov%3D100!7i16384!8i8192!5m1!1e1) north of Amarillo in which northbound US 87 goes under the tracks while southbound US 87 goes over them.
That was why I authored the original topic on this, I think it was mentioned earlier. I thought it was pretty beet.
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: Steve.S on February 16, 2021, 02:04:48 PM
Quote from: ethanhopkin14 on February 16, 2021, 08:57:16 AMI never knew about this situation!!  There is an entire neighborhood in the median of I-75!

Indeed!  The southbound carriageway is the route of the original Millcreek Expressway, which in turn was built largely in the ditch of the old Miami and Erie Canal.  The Village of Lockland (so named because of the numerous locks on the canal in that town) is partially located within the "median" of I-75.  The village of Arlington Heights is entirely within it, and back when it had its own police department, that fact was shown on their shoulder patches.
(https://www.benspatchcollection.com/OHIO/CITIES%20ABERDEEN%20-%20BAY%20VILLAGE/OH,ARLINGTON%20HEIGHTS%20POLICE%201_wm.jpg)
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: Bruce on February 16, 2021, 02:22:36 PM
I-5 and Klickitat Drive (https://goo.gl/maps/3LcH7y6iPUqEuc7M9) in Tukwila, WA
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: kphoger on February 16, 2021, 02:42:13 PM
Quote from: Bruce on February 16, 2021, 02:22:36 PM
I-5 and Klickitat Drive (https://goo.gl/maps/3LcH7y6iPUqEuc7M9) in Tukwila, WA

Get back, Ramona!
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: SkyPesos on February 16, 2021, 02:54:12 PM
Quote from: Steve.S on February 16, 2021, 02:04:48 PM
Quote from: ethanhopkin14 on February 16, 2021, 08:57:16 AMI never knew about this situation!!  There is an entire neighborhood in the median of I-75!

Indeed!  The southbound carriageway is the route of the original Millcreek Expressway, which in turn was built largely in the ditch of the old Miami and Erie Canal.  The Village of Lockland (so named because of the numerous locks on the canal in that town) is partially located within the "median" of I-75.  The village of Arlington Heights is entirely within it, and back when it had its own police department, that fact was shown on their shoulder patches.
(https://www.benspatchcollection.com/OHIO/CITIES%20ABERDEEN%20-%20BAY%20VILLAGE/OH,ARLINGTON%20HEIGHTS%20POLICE%201_wm.jpg)
This area is home to my least favorite interchange in the Cincy area; the exit 12 ramps on SB I-75. Sometimes, I wonder if it was grandfathered into the system, because it looks way below interstate standards.
Also, I think there used to be some state named button copy I-75 shields in this area. They were probably removed within the past few years when ODOT did a lot of button copy sign replacements.
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: mgk920 on February 16, 2021, 03:01:14 PM
In the Wooster, OH area, an instance where westbound US 30 goes over a couple of crossroads at interchanges while eastbound goes under:

https://goo.gl/maps/PFdFbRAa5VpyXiGu9

Mike
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: webny99 on February 22, 2021, 07:53:48 PM
I can't believe we made it this far without anyone mentioning I-271 at I-80 (https://www.google.com/maps/@41.2530782,-81.5858538,3a,75y,240.45h,90.8t/data=!3m7!1e1!3m5!1sfyaAUwfvfAMTk7IIvs5i9A!2e0!5s20140701T000000!7i13312!8i6656!5m1!1e1) south of Cleveland. Bonus: there's no interchange at this crossing.
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: SkyPesos on February 22, 2021, 07:56:58 PM
Quote from: webny99 on February 22, 2021, 07:53:48 PM
I can't believe we made it this far without anyone mentioning I-271 at I-80 (https://www.google.com/maps/@41.2530782,-81.5858538,3a,75y,240.45h,90.8t/data=!3m7!1e1!3m5!1sfyaAUwfvfAMTk7IIvs5i9A!2e0!5s20140701T000000!7i13312!8i6656!5m1!1e1) south of Cleveland. Bonus: there's no interchange at this crossing.

Quote from: SkyPesos on February 11, 2021, 05:00:33 PM
This one has no exit ramps, but worth mentioning: Ohio Turnpike and I-271 (https://www.google.com/maps/@41.2528053,-81.5860828,254m/data=!3m1!1e3)
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: webny99 on February 22, 2021, 09:46:23 PM
Quote from: SkyPesos on February 22, 2021, 07:56:58 PM
Quote from: webny99 on February 22, 2021, 07:53:48 PM
I can't believe we made it this far without anyone mentioning I-271 at I-80 (https://www.google.com/maps/@41.2530782,-81.5858538,3a,75y,240.45h,90.8t/data=!3m7!1e1!3m5!1sfyaAUwfvfAMTk7IIvs5i9A!2e0!5s20140701T000000!7i13312!8i6656!5m1!1e1) south of Cleveland. Bonus: there's no interchange at this crossing.

Quote from: SkyPesos on February 11, 2021, 05:00:33 PM
Ohio Turnpike and I-271 (https://www.google.com/maps/@38.6314469,-90.2357377,3a,30.4y,75.21h,96.3t/data=!3m6!1e1!3m4!1sHhQs_bKjB5So%3Cbr%20/%3EThis%20one%20has%20no%20exit%20ramps,%20but%20worth%20mentioning:%20%5Burl=https://www.google.com/maps/@41.2528053,-81.5860828,254m/data=!3m1!1e3)

Darn, I made sure to scroll back through the entire thread... but I didn't look closely enough, apparently!  :coffee:
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: ethanhopkin14 on February 23, 2021, 10:00:32 AM
Quote from: webny99 on February 22, 2021, 09:46:23 PM
Quote from: SkyPesos on February 22, 2021, 07:56:58 PM
Quote from: webny99 on February 22, 2021, 07:53:48 PM
I can't believe we made it this far without anyone mentioning I-271 at I-80 (https://www.google.com/maps/@41.2530782,-81.5858538,3a,75y,240.45h,90.8t/data=!3m7!1e1!3m5!1sfyaAUwfvfAMTk7IIvs5i9A!2e0!5s20140701T000000!7i13312!8i6656!5m1!1e1) south of Cleveland. Bonus: there's no interchange at this crossing.

Quote from: SkyPesos on February 11, 2021, 05:00:33 PM
Ohio Turnpike and I-271 (https://www.google.com/maps/@38.6314469,-90.2357377,3a,30.4y,75.21h,96.3t/data=!3m6!1e1!3m4!1sHhQs_bKjB5So%3Cbr%20/%3EThis%20one%20has%20no%20exit%20ramps,%20but%20worth%20mentioning:%20%5Burl=https://www.google.com/maps/@41.2528053,-81.5860828,254m/data=!3m1!1e3)

Darn, I made sure to scroll back through the entire thread... but I didn't look closely enough, apparently!  :coffee:
Why is there no interchange here?
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: hotdogPi on February 23, 2021, 10:02:57 AM
Quote from: ethanhopkin14 on February 23, 2021, 10:00:32 AM
Quote from: webny99 on February 22, 2021, 09:46:23 PM
Quote from: SkyPesos on February 22, 2021, 07:56:58 PM
Quote from: webny99 on February 22, 2021, 07:53:48 PM
I can't believe we made it this far without anyone mentioning I-271 at I-80 (https://www.google.com/maps/@41.2530782,-81.5858538,3a,75y,240.45h,90.8t/data=!3m7!1e1!3m5!1sfyaAUwfvfAMTk7IIvs5i9A!2e0!5s20140701T000000!7i13312!8i6656!5m1!1e1) south of Cleveland. Bonus: there's no interchange at this crossing.

Quote from: SkyPesos on February 11, 2021, 05:00:33 PM
Ohio Turnpike and I-271 (https://www.google.com/maps/@38.6314469,-90.2357377,3a,30.4y,75.21h,96.3t/data=!3m6!1e1!3m4!1sHhQs_bKjB5So%3Cbr%20/%3EThis%20one%20has%20no%20exit%20ramps,%20but%20worth%20mentioning:%20%5Burl=https://www.google.com/maps/@41.2528053,-81.5860828,254m/data=!3m1!1e3)

Darn, I made sure to scroll back through the entire thread... but I didn't look closely enough, apparently!  :coffee:
Why is there no interchange here?

Ticket-style toll roads like to limit interchanges, and I-77 and OH 8, both freeways, already have them.

Alternatively: because SkyPesos' link leads to the wrong city.
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: webny99 on February 23, 2021, 10:19:59 AM
Quote from: ethanhopkin14 on February 23, 2021, 10:00:32 AM
Quote from: webny99 on February 22, 2021, 09:46:23 PM
Quote from: SkyPesos on February 22, 2021, 07:56:58 PM
Quote from: SkyPesos on February 11, 2021, 05:00:33 PM
Ohio Turnpike and I-271 (https://www.google.com/maps/@38.6314469,-90.2357377,3a,30.4y,75.21h,96.3t/data=!3m6!1e1!3m4!1sHhQs_bKjB5So%3Cbr%20/%3EThis%20one%20has%20no%20exit%20ramps,%20but%20worth%20mentioning:%20%5Burl=https://www.google.com/maps/@41.2528053,-81.5860828,254m/data=!3m1!1e3)
Darn, I made sure to scroll back through the entire thread... but I didn't look closely enough, apparently!  :coffee:
Why is there no interchange here?

Yes, to add to what was just said: The Turnpike has interchanges two miles west at I-77 and five miles east at OH 8, so another interchange isn't really needed. I-271 traffic can use either of those to access the Turnpike depending on which direction they're heading. In fact, I-271 only has one exit between it's own junctions with I-77 and OH 8, so basically all of the traffic on that section of I-271 has just passed an easy opportunity to access the Turnpike.

Also, it goes right through Cuyahoga National Park, so I wouldn't be surprised if that has something to do with the lack of exits.
Title: Re: Freeway Intersection Where Road Goes Over One Carrageway & Under The Other
Post by: SkyPesos on February 23, 2021, 11:46:47 AM
Quote from: 1 on February 23, 2021, 10:02:57 AM
Alternatively: because SkyPesos' link leads to the wrong city.
The link in my original post works. The one in the quote got messed up because I forgot to remove the first link when modifying the quote. It should work now.