Thought of this when I saw the thread on New Circle Road in Lexington and how it was supposed to be I-464 at one point (according to an unsourced Wikipedia edit):
https://www.aaroads.com/forum/index.php?topic=8107.msg2428478;topicseen#msg2428478
Obviously there are many freeway bypasses and loops that are self-contained within a town or area, with no linkages to the freeway network at large. Are there any extended (i.e. 40+ mile) freeway segments that are not at all connected to other freeways?
To add to that thought - are there any freeways that do link up to other freeways, but of which all of them together do not link to the overall freeway network in the state (i.e. a bypass that links to another bypass, but both not connected to any Interstates or any long-distance freeway routes)?
The longest isolated freeway I can find is part of US 90 in Louisiana. Other long segments are US 4 and US 7 in Vermont, two different segments of US 70 in North Carolina, and TX 6 in College Station.
Quote from: TheStranger on July 10, 2019, 01:57:08 PM
To add to that thought - are there any freeways that do link up to other freeways, but of which all of them together do not link to the overall freeway network in the state (i.e. a bypass that links to another bypass, but both not connected to any Interstates or any long-distance freeway routes)?
SC 22 and SC 31.
EDIT: Forgot US 101.
Trying to think of California-specific examples:
For the first question (completely isolated freeway)
- Route 198 in Lemoore/Hanford, about 15 miles with no other freeways linking up to it
- Route 70/149 between Oroville and Shippee Road, 10.5 miles
- US 101 Ukiah bypass (10 miles)
- US 101 from Paso Robles to Santa Margarita (23 miles)
- US 101 from San Luis Obispo to Arroyo Grande (19 miles)
- US 101 from Nipomo to south of Santa Maria (19 miles)
- US 101 south of Eureka, from milepost 633 (Benbow Drive just north of Richardson Grove) to 703 (north of the Herrick Avenue exit) (70 miles)
For the second...
Route 70 and Route 65 in Marysville might qualify though for how long is a good question, given that most of the 70/99 El Centro Road corridor is now expressway with only a few intersections left.
US 101 and Route 299 in Arcata
US 101 and Route 217 and Route 154 in Santa Barbara
Quote from: TheStranger on July 10, 2019, 02:28:07 PM
Trying to think of California-specific examples:
For the first question (completely isolated freeway)
- Route 198 in Lemoore/Hanford, about 15 miles with no other freeways linking up to it
- Route 70/149 between Oroville and Shippee Road, 10.5 miles
- US 101 Ukiah bypass (10 miles)
- US 101 from Paso Robles to Santa Margarita (23 miles)
- US 101 from San Luis Obispo to Arroyo Grande (19 miles)
- US 101 from Nipomo to south of Santa Maria (19 miles)
- US 101 south of Eureka, from milepost 633 (Benbow Drive just north of Richardson Grove) to 703 (north of the Herrick Avenue exit) (70 miles)
For the second...
Route 70 and Route 65 in Marysville might qualify though for how long is a good question, given that most of the 70/99 El Centro Road corridor is now expressway with only a few intersections left.
US 101 and Route 299 in Arcata
US 101 and Route 217 and Route 154 in Santa Barbara
CA 65 also has a freeway stretch in Porterville out in the middle of nowhere but it is fairly short. The big one probably is CA 178 in Lake Isabella which isn't anywhere close to another freeway segment and kind of lengthy. I would think CA 58 east of CA 223 (an at grade junction) to CA 14 would probably be the longest isolated freeway segment.
TN (currently) has TN 22 -> US 45E -> TN 43 Freeway from Union City to Martin, at about 19 miles. It will connect to Future I-69, but as it stands now, roughly 20 miles of Freeway
Illinois's isolated Freeway segments are pretty short...US 41 in Park City, IL 137 in Waukegan, US 20 in Elgin. The new IL 110/336 Macomb Bypass is a Freeway, but it is presently a Super 2 Freeway
The Elgin-O'Hare Expressway/now IL 390 Tollway recently moved off this list, as it now is Freeway connected to I-290 and soon will be to Future I-490. And should its extension west to meet the US 20 Elgin Freeway ever happen, then US 20 would also come off the list
Probably the longest in IL would be the Northern part of the LSD Freeway/US 41 in Chicago, and that is all of 6.5 miles or so
Quote from: Max Rockatansky on July 10, 2019, 02:56:22 PM
The big one probably is CA 178 in Lake Isabella which isn't anywhere close to another freeway segment and kind of lengthy. I would think CA 58 east of CA 223 (an at grade junction) to CA 14 would probably be the longest isolated freeway segment.
178 around Lake Isabella is only 5 miles between at-grade intersections surprisingly.
Route 58 between Route 223 and 25th Street in Mojave is about 41 miles
In Michigan it would be M-53, the "Van Dyke Freeway" at about 8 miles. Plus several miles more of expressway north of the end of the true freeway, where some of the Mile Roads have intersections rather than interchanges.
The most obvious example is the small freeway network in South Texas near McAllen/ Brownsville. I-2 and the I-69 complex are currently isolated from the rest of the mainland interstate network. The plan is to connect them someday, but it won't be in the next few years.
Alberta's freeways also are isolated. AB 2 connects Calgary and Edmonton. There are a few other freeways that link up to form a small network. But connecting to other freeways requires many miles (or kilometers because it's Canada) of regular roads, though many connections are four lanes.
Quote from: TheStranger on July 10, 2019, 01:57:08 PM
To add to that thought - are there any freeways that do link up to other freeways, but of which all of them together do not link to the overall freeway network in the state (i.e. a bypass that links to another bypass, but both not connected to any Interstates or any long-distance freeway routes)?
US-17 and US-70 in New Bern, NC
The US-17 freeway is being extended 7 miles south when the Pollocksville Bypass opens at the end of the year, and there's plans to build a northern freeway in the future (the interchange at US-70 has ghost-ramps to accommodate the extension) though that is unfunded.
None of the US-17 freeway extensions would connect to the rest of the freeway network though.
The US-70 freeway should be extended south by 2024-25 with the completion of the James City upgrades and the Havelock Bypass - extended by an additional 20 miles.
This example will be obsolete by 2028 when the Kinston Bypass is complete, as the US-70 freeway would be linked to I-795, and likely to I-40 by then - and become I-42 itself.
If the James City upgrades and Havelock Bypass are completed before the Kinston Bypass is done, the New Bern area would have 64 miles of isolated freeways.
(https://i.ibb.co/m5LbKRb/New-Bern-Freeway-Network-by-2025.png)
Downstate beside Macomb the Freeport and US 50 bypasses are all around 6 to 8 miles. All the rest are connected to another freeway or even an Interstate.
And 50 was supposed to be the Interstate . The others two are connected to expressways. As ilp says very few at all in Illinois.
Iowa has a bunch of short isolated bypasses like Mt. Pleasant. Iowa used to have huge hunks of 20 but no longer.
Not sure why I forgot US 50, as I've driven on 50 between Vincennes and St Louis...probably because I consider that one more in IN, but part of the Freeway is in IL
I have never driven US 20 west of Rockford, so I didn't even know the Freeport Bypass is a Freeway
Speaking of Indiana, the US 31 bypass around Kokomo probably count's as the state's longest isolated stretch of freeway. The freeway part of the Lloyd Expressway in Evansville may be the next longest, but it is a few miles long now that the US 41 interchange has been reconfigured.
Mankato, MN has the US 14/169/MN 60 freeway network that does not link to any other freeway systems in the state. They don't meet as freeways within Mankato as 169 isn't a freeway until a couple blocks south of 14.
In PA, how about the freeway section of US-219 between Meyersdale and Ebensburg? While it does cross the PA Turnpike, connections between the two highways are even longer than those at Breezewood. Granted, the road is supposed to eventually connect to I-68 (part of which is under construction as we speak), but even that will involve a roundabout.
Quote from: lepidopteran on July 10, 2019, 09:49:57 PM
In PA, how about the freeway section of US-219 between Meyersdale and Ebensburg? While it does cross the PA Turnpike, connections between the two highways are even longer than those at Breezewood. Granted, the road is supposed to eventually connect to I-68 (part of which is under construction as we speak), but even that will involve a roundabout.
You could say the same thing about I-99 between Bedford and 1/2 mile of I-80.
No actual connections to the rest of the Interstate highway system.
If we're including Canada, the Trans-Canada Highway in British Columbia also has no connections to the rest of the freeway system - it doesn't quite meet I-5/BC-99, and none of the other border crossings are controlled-access. That's ~233 miles of isolated freeway from Kamloops to the ferry landing at Horseshoe Bay.
Anyone have an idea how long the freeway segment of Fain Road/AZ 89A is? That certainly wouldn't be close to the longest isolated freeway listed but it would be for Arizona.
Quote from: Beltway on July 10, 2019, 10:13:14 PM
Quote from: lepidopteran on July 10, 2019, 09:49:57 PM
In PA, how about the freeway section of US-219 between Meyersdale and Ebensburg? While it does cross the PA Turnpike, connections between the two highways are even longer than those at Breezewood. Granted, the road is supposed to eventually connect to I-68 (part of which is under construction as we speak), but even that will involve a roundabout.
You could say the same thing about I-99 between Bedford and 1/2 mile of I-80.
No actual connections to the rest of the Interstate highway system.
That would qualify then for the OP.
It does not connect to the rest of the interstate highway system. It's not the only instance of an interstate highway not connecting to any other interstate highways.
Quote from: Evan_Th on July 10, 2019, 10:35:17 PM
If we're including Canada, the Trans-Canada Highway in British Columbia also has no connections to the rest of the freeway system - it doesn't quite meet I-5/BC-99, and none of the other border crossings are controlled-access. That's ~233 miles of isolated freeway from Kamloops to the ferry landing at Horseshoe Bay.
Between Hope and Kamloops, most of TCH 1 is non-freeway. The freeway between Hope and Kamloops is the Coquihalla Hwy., part of route 5 rather than route 1. It has Canada's highest posted speed limit, 120km/h.
In neighboring Alberta, most or all of route 2 between Calgary and Edmonton is freeway, though I'm unsure whether there are at-grade intersections along the way. There are connecting freeways at both ends, including AB 201 and AB 216.
Quote from: sprjus4 on July 10, 2019, 10:42:29 PM
Quote from: Beltway on July 10, 2019, 10:13:14 PM
You could say the same thing about I-99 between Bedford and 1/2 mile of I-80.
No actual connections to the rest of the Interstate highway system.
That would qualify then for the OP.
It does not connect to the rest of the interstate highway system. It's not the only instance of an interstate highway not connecting to any other interstate highways.
Nor does it connect to any other freeway system.
Quote from: oscar on July 10, 2019, 10:47:20 PM
Quote from: Evan_Th on July 10, 2019, 10:35:17 PM
If we're including Canada, the Trans-Canada Highway in British Columbia also has no connections to the rest of the freeway system - it doesn't quite meet I-5/BC-99, and none of the other border crossings are controlled-access. That's ~233 miles of isolated freeway from Kamloops to the ferry landing at Horseshoe Bay.
Between Hope and Kamloops, most of TCH 1 is non-freeway. The freeway between Hope and Kamloops is the Coquihalla Hwy., part of route 5 rather than route 1. It has Canada's highest posted speed limit, 120km/h.
Yes, I've been there; I was counting Route 5 (also technically part of the TCH) between those points.
Quote from: sprjus4 on July 10, 2019, 10:42:29 PM
It does not connect to the rest of the interstate highway system. It's not the only instance of an interstate highway not connecting to any other interstate highways.
What are those instances? Offhand, I can think of I-2 and I-99, but (unless you count Hawaii, Puerto Rico, and Alaska) that's it unless some discontinuous part of I-42 has been signed by now. AFAIK, all the I-73, I-74, I-49, and I-87 fragments connect to some other Interstate.
Quote from: Evan_Th on July 10, 2019, 11:00:10 PM
What are those instances? Offhand, I can think of I-2 and I-99, but (unless you count Hawaii, Puerto Rico, and Alaska) that's it unless some discontinuous part of I-42 has been signed by now. AFAIK, all the I-73, I-74, I-49, and I-87 fragments connect to some other Interstate.
I-2, I-69E, I-69C, and I-99.
I-73, I-74, I-49, and I-87 all connect to another interstate highway.
I-42 is not signed yet, though is planned to be posted on the Goldsboro Bypass, which is bisected by I-795, in the near future.
Quote from: sprjus4 on July 10, 2019, 11:04:32 PM
I-2, I-69E, I-69C, and I-99.
Ah, the whole Far South Texas network mentioned earlier, which all connects to each other but not to the larger network.
(Which displays a huge travesty; lettered suffixes were rightly eliminated from the system - except for the 35E/35W - till now.)
In North Texas they've upgraded a short segment of US 380 to freeway from SH 289 to the Denton County line – about 3 miles, if that. It intersects the Dallas North Tollway but it's not a full interchange, just a frontage road connection.
Come to think of it, US 82 in Sherman does the same thing at US 75, so if that counts, the US 82 stretch is longer.
The Golden Center and Golden Chain Highways between Grass Valley, California and Nevada City, California have a five-mile freeway segment bookended only by two lane highway versions of State Routes 20 and 49.
Sadly, none of it includes a Super 2.
There's also a couple of stretches of Highway 1 that are unconnected freeway, including the Pacific Coast Freeway segment near Point Mugu and the 17-mile freeway segment between Carmel and Castroville (although arguably the short freeway stretch of 156 on the northern end might disqualify this).
State Route 68 near Toro Park south of Salinas has a freeway stretch bookended by highway portions.
There are numerous freeway segments of US 101 between Goleta and Salinas that are unconnected to other freeways. US 101 near Ukiah is also freeway bookended by highway. As is a segment near Garberville, another south of Eureka, a short one north of Arcata, and another short one north of Crescent City.
State Route 154 potentially counts. It has a freeway segment for several miles on its southern end that ends at several stoplights before allowing you onto a freeway segment of US 101.
A short stretch of State Route 152 in Pacheco Pass is freeway bookended by highway and expressway.
Portions of the Alfred Harrell highway east of Bakersfield from Bakersfield College to Hart Park is freeway bookended by city streets and a highway. And the Westside Parkway is a freeway unconnected (yet) to another freeway.
A brief section of 99 between State Route 149 and the northern city limits of Chico also potentially counts, depending on whether you classify the long transition to 149 and Shippee Road as freeway or highway.
A portion of State Route 135 near Santa Maria, the Orcutt Expressway, is actually freeway.
State Route 18 has a short freeway segment from north of San Bernardino up to the Crestline turnoff.
State Route 79 has a very short freeway segment near Gilman Springs Road north of Hemet.
Then there's the abandoned stuff that got built up to freeway and then turned over to cities without being completed: The Richard Nixon Freeway section of former State Route 90 in Yoruba Linda is one that comes to mind.
Quote from: Evan_Th on July 10, 2019, 11:37:25 PM
(Which displays a huge travesty; lettered suffixes were rightly eliminated from the system - except for the 35E/35W - till now.)
I-270S(pur) approaching the DC Beltway, I-480N in Cleveland, and I'm sure the I-95/NJTP split section has to have some sort of designation difference for the two separate legs - whether it is 95E/95W, 95/95A, etc; they all say "hello"
Granted, all those are relatively short, but they exist
Quote from: ilpt4u on July 11, 2019, 02:38:01 AM
Quote from: Evan_Th on July 10, 2019, 11:37:25 PM
(Which displays a huge travesty; lettered suffixes were rightly eliminated from the system - except for the 35E/35W - till now.)
I-270S(pur) approaching the DC Beltway, I-480N in Cleveland, and I'm sure the I-95/NJTP split section has to have some sort of designation difference for the two separate legs - whether it is 95E/95W, 95/95A, etc; they all say "hello"
Granted, all those are relatively short, but they exist
I don't think -any- of those are signed.
As far as I'm aware, all of those merely have signage pertaining to what highway they are heading for.
For instance, all the signage on I-480"N" simply say "I-271 North Erie Pa".
US-64 between Columbia and Plymouth, NC - 25 miles long - 3,700 - 5,500 AADT.
Constructed in 2005 partly as a relocation to the two-lane US-64, though a good 10-15 miles of it was built directly next to the original road. It's sort of like dualizing a road to 4-lanes, but they built two new carriageways instead of one, captured limited-access, and built it to full freeway standards. The original roadway serves as the "frontage road" to the freeway. It was not modified in the freeway project except at interchanges where it was relocated to accommodate the ramps.
Quite a nice highway IMO, 70 mph speed limit, and very light traffic. The US-64 corridor connects Raleigh and points west to the Outer Banks.
Quote from: sprjus4 on July 11, 2019, 02:46:38 AM
Quote from: ilpt4u on July 11, 2019, 02:38:01 AM
Quote from: Evan_Th on July 10, 2019, 11:37:25 PM
(Which displays a huge travesty; lettered suffixes were rightly eliminated from the system - except for the 35E/35W - till now.)
I-270S(pur) approaching the DC Beltway, I-480N in Cleveland, and I'm sure the I-95/NJTP split section has to have some sort of designation difference for the two separate legs - whether it is 95E/95W, 95/95A, etc; they all say "hello"
Granted, all those are relatively short, but they exist
I don't think -any- of those are signed.
As far as I'm aware, all of those merely have signage pertaining to what highway they are heading for.
For instance, all the signage on I-480"N" simply say "I-271 North Erie Pa".
480N is signed on the Mile Markers
I thought there was a 270S Shield out there...Closest is at the 270 South/270 Spur split, but South and Spur are both spelled out - still unusual with Interstates, a junction with 2 routes of the same Shielded designation, which imho is worse than Suffixes
95/NJTP I believe does not have any signed difference
Quote from: sprjus4 on July 11, 2019, 02:46:38 AM
Quote from: ilpt4u on July 11, 2019, 02:38:01 AM
Quote from: Evan_Th on July 10, 2019, 11:37:25 PM
(Which displays a huge travesty; lettered suffixes were rightly eliminated from the system - except for the 35E/35W - till now.)
I-270S(pur) approaching the DC Beltway, I-480N in Cleveland, and I'm sure the I-95/NJTP split section has to have some sort of designation difference for the two separate legs - whether it is 95E/95W, 95/95A, etc; they all say "hello"
Granted, all those are relatively short, but they exist
I don't think -any- of those are signed.
I-270 Spur where it divides from I-270 -- https://tinyurl.com/yxolp982
Depends on the definition of isolated. If "Breezewoods" are not counted as freeway to freeway connections, I have one pretty long example near me: the entirety of Spanish A-22 at 94 km (58.4 miles). One end is at A-2, but one has to make its way through a roundabout to get from one to the other. This will change in 2021 or so, when the freeway is finally completed to A-23.
Quote from: CNGL-Leudimin on July 11, 2019, 07:51:07 AM
Depends on the definition of isolated. If "Breezewoods" are not counted as freeway to freeway connections, I have one pretty long example near me: the entirety of Spanish A-22 at 94 km (58.4 miles). One end is at A-2, but one has to make its way through a roundabout to get from one to the other. This will change in 2021 or so, when the freeway is finally completed to A-23.
That's a good point. Ordinarily, I would say that any connection that would merit a road no longer being a freeway, would cause a break in the system. This should include Breezewoods, traffic circles, and intersections. It would not include toll booths or exempt railroad crossings or drawbridges.
If intersections do cause a break in a freeway, then one could argue that portions of I-10 and I-40 in West Texas may qualify.
Quote from: Beltway on July 10, 2019, 10:13:14 PM
Quote from: lepidopteran on July 10, 2019, 09:49:57 PM
In PA, how about the freeway section of US-219 between Meyersdale and Ebensburg? While it does cross the PA Turnpike, connections between the two highways are even longer than those at Breezewood. Granted, the road is supposed to eventually connect to I-68 (part of which is under construction as we speak), but even that will involve a roundabout.
You could say the same thing about I-99 between Bedford and 1/2 mile of I-80.
No actual connections to the rest of the Interstate highway system.
But the OP asked about connections to any freeway. I-99 connects to the US 22 freeway and the rest of the State College bypass US 322.
And US 219 connects to the PA 56 freeway.
So those two examples fit into the second question but not the first.
The first one that came to my mind here was US 97 in Bend, OR.
Also:
- A70 in Quebec.
- Earhart Expressway (LA 3139) in New Orleans, LA.
Here in Wisconsin, the likeliest entry is WI 11/81 in the Monroe, WI area. Would the freeway parts of US 151 between Madison, WI and Dubuque, IA count, seeing as when the current upgrade project in Madison is done, it will still connect 'Breezewood-style' with the Beltline via a SPUI? Ditto the freeway parts of WI 26 north of Janesville, also US 14 between Madison and Oregon?
Mike
Quote from: mgk920 on July 11, 2019, 11:57:17 AM
Here in Wisconsin, the likeliest entry is WI 11/81 in the Monroe, WI area. Would the freeway parts of US 151 between Madison, WI and Dubuque, IA count, seeing as when the current upgrade project in Madison is done, it will still connect 'Breezewood-style' with the Beltline via a SPUI? Ditto the freeway parts of WI 26 north of Janesville, also US 14 between Madison and Oregon?
Mike
US 151 doesn't appear to be entirely freeway even that far past Dubuque, with an at-grade near Kieler, WI and several more scattered along the route. So it is currently several isolated segments rather than one lengthy one - though in Dubuque it comes close to connecting with the US 20 freeway without doing so. (IIRC isn't US 20 going to eventually bypass the city to the south and connect with the 151 freeway more directly?)
That section of WI 26 on the other hand absolutely fits the concept - it's interesting to see how close it comes to connecting to 2 freeways without actually doing so!
The US 14 section has two free-flowing ramps to the Beltline so that does barely make it not qualify for this list (similar to the partial at-grade/partial-freeflow setups for I-880/Route 237 and I-880/Route 92 in Northern California).
Quote from: ilpt4u on July 11, 2019, 03:05:37 AM
Quote from: sprjus4 on July 11, 2019, 02:46:38 AM
Quote from: ilpt4u on July 11, 2019, 02:38:01 AM
Quote from: Evan_Th on July 10, 2019, 11:37:25 PM
(Which displays a huge travesty; lettered suffixes were rightly eliminated from the system - except for the 35E/35W - till now.)
I-270S(pur) approaching the DC Beltway, I-480N in Cleveland, and I'm sure the I-95/NJTP split section has to have some sort of designation difference for the two separate legs - whether it is 95E/95W, 95/95A, etc; they all say "hello"
Granted, all those are relatively short, but they exist
I don't think -any- of those are signed.
As far as I'm aware, all of those merely have signage pertaining to what highway they are heading for.
For instance, all the signage on I-480"N" simply say "I-271 North Erie Pa".
480N is signed on the Mile Markers
I thought there was a 270S Shield out there...Closest is at the 270 South/270 Spur split, but South and Spur are both spelled out - still unusual with Interstates, a junction with 2 routes of the same Shielded designation, which imho is worse than Suffixes
95/NJTP I believe does not have any signed difference
NJDOT inventories the eastern spur as 95 and the western spur as 95W, but it's a secret designation. Both spurs have always and only been signed as simply 95.
Quote from: oscar on July 10, 2019, 10:47:20 PM
In neighboring Alberta, most or all of route 2 between Calgary and Edmonton is freeway, though I'm unsure whether there are at-grade intersections along the way. There are connecting freeways at both ends, including AB 201 and AB 216.
There are (https://www.google.com/maps/@51.8528644,-114.0253529,3a,75y,3.53h,87.7t/data=!3m7!1e1!3m5!1sLz21S8ru1RnwmOCqxEjcag!2e0!6s%2F%2Fgeo1.ggpht.com%2Fcbk%3Fpanoid%3DLz21S8ru1RnwmOCqxEjcag%26output%3Dthumbnail%26cb_client%3Dmaps_sv.tactile.gps%26thumb%3D2%26w%3D203%26h%3D100%26yaw%3D42.28311%26pitch%3D0%26thumbfov%3D100!7i13312!8i6656). I counted 6 and a RIRO between AB 201 and AB 216, most south of Red Deer.
MO 21, SW of St Louis, is about 20 miles of Freeway...may be the Show Me State longest isolated Freeway
Quote from: TheStranger on July 11, 2019, 01:50:13 PM
(IIRC isn't US 20 going to eventually bypass [Dubuque] to the south and connect with the 151 freeway more directly?)
You're thinking of the SW Arterial, which will carry US 52 once completed. Despite its name, it'll be a full freeway, although IIRC there will be a diamond interchange at each end.
Other Iowa examples include freeway bypasses of Marshalltown, Oskaloosa, Ottumwa, Mt. Pleasant (mentioned previously), Fairfield, and Burlington. I think the longest of these is US 34 through Burlington, which is 15 miles from the last at-grade intersection west of the city and the first at-grade in Illinois.
Quote from: TheStranger on July 11, 2019, 01:50:13 PM
Quote from: mgk920 on July 11, 2019, 11:57:17 AM
Here in Wisconsin, the likeliest entry is WI 11/81 in the Monroe, WI area. Would the freeway parts of US 151 between Madison, WI and Dubuque, IA count, seeing as when the current upgrade project in Madison is done, it will still connect 'Breezewood-style' with the Beltline via a SPUI? Ditto the freeway parts of WI 26 north of Janesville, also US 14 between Madison and Oregon?
Mike
US 151 doesn't appear to be entirely freeway even that far past Dubuque, with an at-grade near Kieler, WI and several more scattered along the route. So it is currently several isolated segments rather than one lengthy one - though in Dubuque it comes close to connecting with the US 20 freeway without doing so. (IIRC isn't US 20 going to eventually bypass the city to the south and connect with the 151 freeway more directly?)
That section of WI 26 on the other hand absolutely fits the concept - it's interesting to see how close it comes to connecting to 2 freeways without actually doing so!
The US 14 section has two free-flowing ramps to the Beltline so that does barely make it not qualify for this list (similar to the partial at-grade/partial-freeflow setups for I-880/Route 237 and I-880/Route 92 in Northern California).
Another that I remembered right after I posted that is the WI 29 freeway in the Bonduel/Shawano area.
Mike
Quote from: sprjus4 on July 10, 2019, 07:08:57 PM
Quote from: TheStranger on July 10, 2019, 01:57:08 PM
To add to that thought - are there any freeways that do link up to other freeways, but of which all of them together do not link to the overall freeway network in the state (i.e. a bypass that links to another bypass, but both not connected to any Interstates or any long-distance freeway routes)?
US-17 and US-70 in New Bern, NC
The US-17 freeway is being extended 7 miles south when the Pollocksville Bypass opens at the end of the year, and there's plans to build a northern freeway in the future (the interchange at US-70 has ghost-ramps to accommodate the extension) though that is unfunded.
None of the US-17 freeway extensions would connect to the rest of the freeway network though.
The US-70 freeway should be extended south by 2024-25 with the completion of the James City upgrades and the Havelock Bypass - extended by an additional 20 miles.
This example will be obsolete by 2028 when the Kinston Bypass is complete, as the US-70 freeway would be linked to I-795, and likely to I-40 by then - and become I-42 itself.
If the James City upgrades and Havelock Bypass are completed before the Kinston Bypass is done, the New Bern area would have 64 miles of isolated freeways.
(https://i.ibb.co/m5LbKRb/New-Bern-Freeway-Network-by-2025.png)
How about the proposed New Bern bypass?
Central PA has a decently-sized network of connected freeway that is not connected to any other freeway. Once a few projects are done, it will include I-99/US-220 from Bellefonte to Bedford (93mi), US-322 from State College to Clarks Ferry (71 miles), US-22 from Hollidaysburg to Ebensburg (18 miles), US-22 outside of Lewistown (5 miles), US-219's freeway in PA (62 miles), US-322 just off I-99 in Port Matilda (2 miles), the 11/15 bypass of Duncannon (5 miles), the PA-26 freeway stub (1 mile), and the PA-56 Johnstown Expressway (5 miles). (This will be done once Ebensburg and Tusseyville's bypasses are built, which will hopefully come before I-80/I-99 is finished). This will come to a staggering 262 miles, unconnected to any other freeway.
I-49 in LA north of Opelousas and south of Shreveport.
Quote from: roadman65 on February 24, 2021, 11:30:15 AM
I-49 in LA north of Opelousas and south of Shreveport.
Not exactly isolated from the interstate / freeway network as it connects directly to I-10 and I-20.
Freeway segments of US-90 south of Lafayette would be better examples.
Quote from: Ketchup99 on February 24, 2021, 11:21:17 AM
I-99/US-220 from Bellefonte to Bedford (93mi)
Not once the I-80 interchange is built.