I think the longest distance on the US Highway system between junctions with part of the Interstate system goes to US 101. Almost 1200 miles from I-5 in Olympia to I-580 just north of San Francisco.
Some others with significant distance, and feel free to add.
- US 395 has about 560 miles from I-84 in Pendleton, OR to I-80 in Reno, NV
- US 2 has about 460 miles from I-15 in Shelby, MT until meeting I-90 in Spokane, WA
US 90, about 445 miles from I-10 in Van Horn TX to I-410 west of San Antonio.
US 20, about 490 miles from I-25 in Wyoming to I-129 near Sioux City IA.
US 2, about 740 miles east from I-15 near Shelby MT to I-29 in Grand Forks ND.
US 101, about 350 miles south from I-280/680 in San Jose CA to I-405 in Sherman Oaks CA.
US 98, about 425 miles from I-110 in Pensacola FL to I-75 near Brooksville FL.
US 12 is about 500 miles from I-94 at Miles City to I-29 in South Dakota.
US 40 has about 430 miles from its western terminus at I-80 at Silver Creek Junction, UT to its junction with I-70 near Empire, CO.
While US 350 is only 73 miles long (thus way shorter than the examples given), it doesn't intersect any Interstates on its route. US 550 also had this distinction before 1998.
Now more in line with the thread, in addition to the segments mentioned above US 2 has another 425 mile segment between I-35 in Duluth MN and the Eastern terminus of its Western iteration at I-75 in St. Ignace MI.
Not too many examples in the east with how close interstates are, but here's one:
US 6: 307 miles between I-79 and I-81/476
Quote from: OCGuy81 on January 29, 2021, 11:05:17 PM
I think the longest distance on the US Highway system between junctions with part of the Interstate system goes to US 101. Almost 1200 miles from I-5 in Olympia to I-580 just north of San Francisco.
Some others with significant distance, and feel free to add.
- US 395 has about 560 miles from I-84 in Pendleton, OR to I-80 in Reno, NV
- US 2 has about 460 miles from I-15 in Shelby, MT until meeting I-90 in Spokane, WA
Without looking I would assume that US-2 between I-75 and I-35 is just as long as US-2 between I-15 and I-90.
Quote from: CNGL-Leudimin on January 30, 2021, 09:38:42 AM
While US 350 is only 73 miles long (thus way shorter than the examples given), it doesn't intersect any Interstates on its route. US 550 also had this distinction before 1998.
Now more in line with the thread, in addition to the segments mentioned above US 2 has another 425 mile segment between I-35 in Duluth MN and the Eastern terminus of its Western iteration at I-75 in St. Ignace MI.
I just mentioned US-2 between Duluth and St. Ignace before I saw this post. I wasn't sure on the mileage and didn't really feel like looking it up.
How about longest stub ends too? US-41 from I-41 near Green Bay to the end at Copper Harbor is just about 320 miles.
US-191 north from I-94 is a little shorter, about 290 miles.
US-12: 361 miles from I-182 in the Tri-Cities of Washington to I-90 in Missoula, MT
US-95: 418 miles from I-15/I-515 in Las Vegas to I-80 north of Fallon (entirely in Nevada)
US-93: 398 miles from I-15 northeast of Las Vegas to I-80 in Wells (entirely in Nevada)
Quote from: SkyPesos on January 30, 2021, 10:01:46 AM
Not too many examples in the east with how close interstates are, but here's one:
US 6: 307 miles between I-79 and I-81/476
This will be cut once I-99 is signed South of the NY/PA line, as it is set to intersect US 6 at Mansfield.
I had thought of US 1 in Maine: 325 miles between I-295 in Brunswick and I-95 in Houlton.
And one that surely will surprise the most: US 30, 460 miles from where it leaves I-80 in Pine Bluffs WY across all of Nebraska to I-29 near Missouri Valley IA. It parallels the aforementioned I-80 for over 300 miles without ever crossing it, so it may get overlooked.
US380 stays south of I-27 and north of I-20 to make it about 610 miles from San Antonio, NM to Denton, Texas.
US380 - around 610 miles from I-25 near San Antonio, NM to I-35 in Denton, TX. I think that's currently #3 on our list.
Edit - Beaten by a minute!
Also, US93 runs for about 380 miles between Twin Falls, ID and Missoula.
More edits.
US212 from Crow Agency, MT (I-90) to Watertown, SD (I-29) - 565 miles.
Chris
It doesn't hit another interstate at one end, but you can drive 480 miles on US160 between Cameron, AZ and Walsenburg, CO and its connection with I-25.
Chris
US 113 is about 75 miles and iirc it's the longest US route that never touches an interstate (163 still technically does)
- US 50 from where it leaves I-15 to I-380 near Carson city is right at 500 miles
- US 6 from where it leaves I-15 to Bishop is a little over 500 miles.
- US 19 from I-10 to I-475 is 235 miles (a side note, I wonder why 19 ends immediately at its junction with 41 instead of using 301 to sarasota)
- US 95 from I-80 to Las Vegas is 417 miles. 93 is 397 miles.
- US 212 from I-90 to I-29 is 565 (!) miles.
- US 54 from I-40 to Wichita is 416 miles, from east of Wichita to I-70 it's 354 miles.
Edit- I see I get beat to some of these too.
US-56 from Business I-25 in Springer NM to I-135 in McPherson KS is 433 miles.
US-50 from I-25 in Pueblo CO to I-135 in Newton KS is 424 miles.
US-54 from I-40 in Tucumcari to I-235 in Wichita is 416 miles.
Surprisingly, going from I-40 either north or south along US-183 or US-283 to either I-70 or I-20 respectively is only about 300 miles no matter which way you go. It looks longer than that on a map.
Quote from: kenarmy on January 30, 2021, 02:34:10 PM
- US 50 from where it leaves I-15 to I-380 near Carson city is right at 500 miles
Came here to post this one. It's actually I-580, and the junction is inside Carson City. I got 501 miles (had to manually adjust the Goog's route to stay on US 50 near Hinckley, UT).
So it looks like our >= 400 milers are:
(I didn't get exact mileages. If someone wants to post them, happy to adjust (sorry if I missed any).)
1. US101 (CA-WA) 1063
2. US2 (MT-ND) 740
3. US380 (NM-TX) 610
4. US212 (WY-SD) 565
5. US395 (NV-OR) 560
6. US36 (CO-MO) 513
7. US12 (MT-SD) 500
7. US50 (NV-UT) 500
7. US6 (CA-UT) 500
10. US20 (WY-NE) 490
(10a?. US160 (AZ-CO) 480) *Include if you want to say longest you can drive on one US highway without intersecting an interstate
11. US287 (WY-MT) 470
12. US2 (WA-MT) 460
12. US30 (WY-IA) 460
14. US90 (TX) 445
15. US56 (NM-KS) 433
16. US40 (UT-CO) 430
16. US412 (NM-OK) 430
18. US2 (MN-MI) 425
18. US98 (FL) 425
20. US50 (CO-KS) 424
21. US95 (NV) 418
22. US54 (NM-KS) 416
Updated.
Chris
Another good one: US-36 from I-70 at Byers CO to I-229 in St. Joseph MO, 513 miles.
Quote from: CNGL-Leudimin on January 30, 2021, 01:40:52 PM
This will be cut once I-99 is signed South of the NY/PA line, as it is set to intersect US 6 at Mansfield.
I had thought of US 1 in Maine: 325 miles between I-295 in Brunswick and I-95 in Houlton.
Ok I'll try again, since it seems like coastal routes are the best bet.
US 17: about 400 miles between I-526 and I-64 (I-40 ends before meeting US 17 in Wilmington).
Quote from: SkyPesos on January 30, 2021, 04:30:46 PM
US 17: about 400 miles between I-526 and I-64 (I-40 ends before meeting US 17 in Wilmington).
True but it does intersect I-140 in Wilmington
Can't believe I missed one basically in my own backyard.
US 97 has 342 miles between I-84 in Biggs Junction, OR and I-5 in Weed, CA
Quote from: jayhawkco on January 30, 2021, 03:37:25 PM
So it looks like our >= 400 milers are:
(I didn't get exact mileages. If someone wants to post them, happy to adjust (sorry if I missed any).)
1. US101 (CA-WA) 1200
2. US2 (MT-ND) 740
3. US380 (NM-TX) 610
4. US212 (WY-SD) 565
5. US395 (NV-OR) 560
6. US12 (MT-SD) 500
6. US50 (NV-UT) 500
6. US6 (CA-UT) 500
9. US20 (WY-NE) 490
(9a?. US160 (AZ-CO) 480) *Include if you want to say longest you can drive on one US highway without intersecting an interstate
10. US2 (WA-MT) 460
11. US90 (TX) 445
12. US56 (NM-KS) 433
13. US40 (UT-CO) 430
14. US2 (MN-MI) 425
14. US98 (FL) 425
16. US50 (CO-KS) 424
17. US95 (NV) 418
18. US54 (NM-KS) 416
Will update if we find more.
Chris
Looks like you have one missing:
Quote from: CNGL-Leudimin on January 30, 2021, 01:40:52 PM
And one that surely will surprise the most: US 30, 460 miles from where it leaves I-80 in Pine Bluffs WY across all of Nebraska to I-29 near Missouri Valley IA. It parallels the aforementioned I-80 for over 300 miles without ever crossing it, so it may get overlooked.
Quote from: kenarmy on January 30, 2021, 02:34:10 PM
US 113 is about 75 miles and iirc it's the longest US route that never touches an interstate (163 still technically does)
AFAIK US 163 was officially truncated in 2008, so it doesn't touch an Interstate anymore. Anyway it is shorter than both 113 and 350.
This one was probably missed because it overlaps with so many routes:
US 412 from I-35 to its western terminus is 430 miles
US 26 from Idaho Falls to 25 in Glenrock is 418 miles. But this is counting where it passes under 25 in Casper without access and an overlap with an interstate business route.
Quote from: SkyPesos on January 30, 2021, 04:30:46 PM
Ok I'll try again, since it seems like coastal routes are the best bet.
US 17: about 400 miles between I-526 and I-64 (I-40 ends before meeting US 17 in Wilmington).
Nvm I found the 2 East of the Mississippi winners for this thread from looking at their intersections list, both have been mentioned already though:
US 2 between I-35 and I-75: 424 mi
US 98 between I-110 and I-75: 422 mi
I know it's not a US route, but this question wasn't answered when I asked it before a few years ago.
How do we treat I-690/NY 5? Do they "touch"?
How do you measure through Yellowstone? I can't but US 287 is more than 400 miles from I-80 and I-90
Quote from: 1 on January 30, 2021, 07:41:28 PM
I know it's not a US route, but this question wasn't answered when I asked it before a few years ago.
How do we treat I-690/NY 5? Do they "touch"?
I don't think they do they get close where US-11 crosses them but they still aren't really touching each other.
Quote from: kenarmy on January 30, 2021, 07:58:59 PM
How do you measure through Yellowstone? I can't but US 287 is more than 400 miles from I-80 and I-90
Google maps measure tool. Yes it takes a lot of time to get it really precise, but I've done it for fictional exit lists in one of my threads before.
Quote from: SkyPesos on January 30, 2021, 08:07:36 PM
Quote from: kenarmy on January 30, 2021, 07:58:59 PM
How do you measure through Yellowstone? I can't but US 287 is more than 400 miles from I-80 and I-90
Google maps measure tool. Yes it takes a lot of time to get it really precise, but I've done it for fictional exit lists in one of my threads before.
I tried that but when I try to edit my route over it won't let me or either it takes a drastically long route that avoids yellowstone
Quote from: Flint1979 on January 30, 2021, 08:05:49 PM
Quote from: 1 on January 30, 2021, 07:41:28 PM
I know it's not a US route, but this question wasn't answered when I asked it before a few years ago.
How do we treat I-690/NY 5? Do they "touch"?
I don't think they do they get close where US-11 crosses them but they still aren't really touching each other.
I'm talking about NY 5's corner where it turns at the terminus of NY 290, about 500 feet away. Does it "touch" I-690 (without an exit, obviously) there? You're going to need satellite view.
Quote from: kenarmy on January 30, 2021, 07:58:59 PM
How do you measure through Yellowstone? I can't but US 287 is more than 400 miles from I-80 and I-90
IIRC, US 287 (like other US routes) doesn't officially exist within Yellowstone. The "missing" mileage within the park will reduce your number for the segments north and south of the park, even if it's legit to combine them for this game.
The high entrance fees at Yellowstone, as well as its low speed limits, might explain why Google balks at letting you route through the park.
Quote from: 1 on January 30, 2021, 08:26:03 PM
Quote from: Flint1979 on January 30, 2021, 08:05:49 PM
Quote from: 1 on January 30, 2021, 07:41:28 PM
I know it's not a US route, but this question wasn't answered when I asked it before a few years ago.
How do we treat I-690/NY 5? Do they "touch"?
I don't think they do they get close where US-11 crosses them but they still aren't really touching each other.
I'm talking about NY 5's corner where it turns at the terminus of NY 290, about 500 feet away. Does it "touch" I-690 (without an exit, obviously) there? You're going to need satellite view.
I would have to say that they don't touch. This is as close as they get
https://www.google.com/maps/@43.0516245,-76.1500184,36m/data=!3m1!1e3!5m1!1e1
Quote from: kenarmy on January 30, 2021, 08:14:01 PM
Quote from: SkyPesos on January 30, 2021, 08:07:36 PM
Quote from: kenarmy on January 30, 2021, 07:58:59 PM
How do you measure through Yellowstone? I can't but US 287 is more than 400 miles from I-80 and I-90
Google maps measure tool. Yes it takes a lot of time to get it really precise, but I've done it for fictional exit lists in one of my threads before.
I tried that but when I try to edit my route over it won't let me or either it takes a drastically long route that avoids yellowstone
I mean, using the ruler tool. For this thread, it doesn't have to be very precise, but for my fictional exits numbers, it had to because it's exit numbers.
According to usends, the yellowstone segment is 68.8 miles.
So including this portion, between 1-90 and I-80 in Rawlins, US 287 is 470 miles.
An example that isn't, but could have been, if YT 1 were renumbered: 2,122 miles for US 97 from I-90 to I-A1
US 1 in Florida goes about 245 miles without intersecting an Interstate, between I-595 in Fort Lauderdale and I-95 in Ormond Beach.
US 441 runs about 222 miles between I-595 and I-4.
Both obviously are not near the longest nationwide, but surprisingly long for where they're at (especially US 1 being within a very short distance of I-95 the whole time).
Quote from: Flint1979 on January 30, 2021, 08:43:11 PM
Quote from: 1 on January 30, 2021, 08:26:03 PM
Quote from: Flint1979 on January 30, 2021, 08:05:49 PM
Quote from: 1 on January 30, 2021, 07:41:28 PM
I know it's not a US route, but this question wasn't answered when I asked it before a few years ago.
How do we treat I-690/NY 5? Do they "touch"?
I don't think they do they get close where US-11 crosses them but they still aren't really touching each other.
I'm talking about NY 5's corner where it turns at the terminus of NY 290, about 500 feet away. Does it "touch" I-690 (without an exit, obviously) there? You're going to need satellite view.
I would have to say that they don't touch. This is as close as they get
https://www.google.com/maps/@43.0516245,-76.1500184,36m/data=!3m1!1e3!5m1!1e1
There is an on-ramp to I-690 at McBride and an off-ramp at Townsend very, very close to NY 5 (Erie Blvd).
That said, I believe the McBride ramp will be removed and replaces with ramps at Crouse and Irving during the I-81 project.
Quote from: oscar on January 30, 2021, 08:27:33 PM
Quote from: kenarmy on January 30, 2021, 07:58:59 PM
How do you measure through Yellowstone? I can't but US 287 is more than 400 miles from I-80 and I-90
IIRC, US 287 (like other US routes) doesn't officially exist within Yellowstone. The "missing" mileage within the park will reduce your number for the segments north and south of the park, even if it's legit to combine them for this game.
The high entrance fees at Yellowstone, as well as its low speed limits, might explain why Google balks at letting you route through the park.
If I had to guess, I'd say it's because the roads in Yellowstone are closed in the winter. Most of them, anyway.
The winner is obviously US-101 between Tumwater, WA and San Rafael, CA at 1,056 miles.
Quote from: Crown Victoria on January 30, 2021, 10:38:59 PM
US 1 in Florida goes about 245 miles without intersecting an Interstate, between I-595 in Fort Lauderdale and I-95 in Ormond Beach.
US 441 runs about 222 miles between I-595 and I-4.
Both obviously are not near the longest nationwide, but surprisingly long for where they're at (especially US 1 being within a very short distance of I-95 the whole time).
What about US 98 from I-75 at a Ridge Manor to I-110 in Pensacola? That is longer yet for that state.
Quote from: roadman65 on January 31, 2021, 07:00:43 AM
Quote from: Crown Victoria on January 30, 2021, 10:38:59 PM
US 1 in Florida goes about 245 miles without intersecting an Interstate, between I-595 in Fort Lauderdale and I-95 in Ormond Beach.
US 441 runs about 222 miles between I-595 and I-4.
Both obviously are not near the longest nationwide, but surprisingly long for where they're at (especially US 1 being within a very short distance of I-95 the whole time).
What about US 98 from I-75 at a Ridge Manor to I-110 in Pensacola? That is longer yet for that state.
Already mentioned thrice upthread. But yes well over 400 miles.
No one's mentioned it, and it's not a record winner, but US 285 runs about 372 miles between I-25 in Denver and I-25 in Santa Fe. It's a scenic (and shorter) non-interstate route between the two cities.
Quote from: zzcarp on January 31, 2021, 12:04:57 PM
No one's mentioned it, and it's not a record winner, but US 285 runs about 372 miles between I-25 in Denver and I-25 in Santa Fe. It's a scenic (and shorter) non-interstate route between the two cities.
Another one that doesn't quite make the 'Over 400 List' I made upthread is US101 (again) between I-680/I-280 and I-405 at 366 miles.
Quote from: kenarmy on January 30, 2021, 07:20:32 PM
US 26 from Idaho Falls to 25 in Glenrock is 418 miles. But this is counting where it passes under 25 in Casper without access and an overlap with an interstate business route.
It looks like it has an exit to I-25 South to me.
Chris
Quote from: Rothman on January 30, 2021, 10:51:34 PM
Quote from: Flint1979 on January 30, 2021, 08:43:11 PM
Quote from: 1 on January 30, 2021, 08:26:03 PM
Quote from: Flint1979 on January 30, 2021, 08:05:49 PM
Quote from: 1 on January 30, 2021, 07:41:28 PM
I know it's not a US route, but this question wasn't answered when I asked it before a few years ago.
How do we treat I-690/NY 5? Do they "touch"?
I don't think they do they get close where US-11 crosses them but they still aren't really touching each other.
I'm talking about NY 5's corner where it turns at the terminus of NY 290, about 500 feet away. Does it "touch" I-690 (without an exit, obviously) there? You're going to need satellite view.
I would have to say that they don't touch. This is as close as they get
https://www.google.com/maps/@43.0516245,-76.1500184,36m/data=!3m1!1e3!5m1!1e1
There is an on-ramp to I-690 at McBride and an off-ramp at Townsend very, very close to NY 5 (Erie Blvd).
Yeah, it's very close but I would say no, they don't touch.
Quote from: webny99 on January 31, 2021, 05:28:43 PM
Quote from: Rothman on January 30, 2021, 10:51:34 PM
Quote from: Flint1979 on January 30, 2021, 08:43:11 PM
Quote from: 1 on January 30, 2021, 08:26:03 PM
Quote from: Flint1979 on January 30, 2021, 08:05:49 PM
Quote from: 1 on January 30, 2021, 07:41:28 PM
I know it's not a US route, but this question wasn't answered when I asked it before a few years ago.
How do we treat I-690/NY 5? Do they "touch"?
I don't think they do they get close where US-11 crosses them but they still aren't really touching each other.
I'm talking about NY 5's corner where it turns at the terminus of NY 290, about 500 feet away. Does it "touch" I-690 (without an exit, obviously) there? You're going to need satellite view.
I would have to say that they don't touch. This is as close as they get
https://www.google.com/maps/@43.0516245,-76.1500184,36m/data=!3m1!1e3!5m1!1e1
There is an on-ramp to I-690 at McBride and an off-ramp at Townsend very, very close to NY 5 (Erie Blvd).
Yeah, it's very close but I would say no, they don't touch.
Given the signage on NY 5 EB, I think they do.
By far the longest in the Great Lakes region is 425ish miles: US-2 between I-35 at Duluth and I-75 at St. Ignace. It crosses four state borders over that span.
Quote from: thspfc on January 31, 2021, 11:11:36 PM
By far the longest in the Great Lakes region is 425ish miles: US-2 between I-35 at Duluth and I-75 at St. Ignace. It crosses four state borders over that span.
Yeah but only goes through three states in that span. See what I did there?
Quote from: Mapmikey on January 30, 2021, 05:14:11 PM
Quote from: SkyPesos on January 30, 2021, 04:30:46 PM
US 17: about 400 miles between I-526 and I-64 (I-40 ends before meeting US 17 in Wilmington).
True but it does intersect I-140 in Wilmington
And FWIW, at some point in the future US 17 will intersect (and overlap) I-42 & I-87 as well.
Quote from: Rothman on January 31, 2021, 10:40:11 PM
Quote from: webny99 on January 31, 2021, 05:28:43 PM
Quote from: Rothman on January 30, 2021, 10:51:34 PM
There is an on-ramp to I-690 at McBride and an off-ramp at Townsend very, very close to NY 5 (Erie Blvd).
Yeah, it's very close but I would say no, they don't touch.
Given the signage on NY 5 EB, I think they do.
It's all "TO" signs from what I can tell... unless I'm missing something.
Quote from: webny99 on February 01, 2021, 04:53:49 PM
Quote from: Rothman on January 31, 2021, 10:40:11 PM
Quote from: webny99 on January 31, 2021, 05:28:43 PM
Quote from: Rothman on January 30, 2021, 10:51:34 PM
There is an on-ramp to I-690 at McBride and an off-ramp at Townsend very, very close to NY 5 (Erie Blvd).
Yeah, it's very close but I would say no, they don't touch.
Given the signage on NY 5 EB, I think they do.
It's all "TO" signs from what I can tell... unless I'm missing something.
You can be standing in the crosswalk and have I-690 directly above you. The question is a matter of how large the intersection is considered to be, since this is a "(potential) touch without connection" situation.
Quote from: CNGL-Leudimin on January 30, 2021, 06:00:43 PM
Quote from: kenarmy on January 30, 2021, 02:34:10 PM
US 113 is about 75 miles and iirc it's the longest US route that never touches an interstate (163 still technically does)
AFAIK US 163 was officially truncated in 2008, so it doesn't touch an Interstate anymore. Anyway it is shorter than both 113 and 350.
US 163 was officially truncated by AASHTO in 2008...but if you poke around in Utah's internal documentation, UDOT still considers a 163/191 concurrency to exist from Bluff north to Crescent Jct. It isn't signed and hasn't been since the 1980s, but it's still there in the highway reference materials.
Some honorable mentions that surprised me.
US 8- 279 miles (the op probably wasn't looking for this bc it touches only one interstate its entire route)
US 52- 300 miles from I-39 to I-90. (It passes through I-88 without access)
US 90- 187 miles from Pensacola to Midway
US 75- 238 miles from I-90 to I-94
US 10- 241 miles from I-29 to Minnie
Quote from: Crown Victoria on January 31, 2021, 09:48:29 AM
Quote from: roadman65 on January 31, 2021, 07:00:43 AM
Quote from: Crown Victoria on January 30, 2021, 10:38:59 PM
US 1 in Florida goes about 245 miles without intersecting an Interstate, between I-595 in Fort Lauderdale and I-95 in Ormond Beach.
US 441 runs about 222 miles between I-595 and I-4.
Both obviously are not near the longest nationwide, but surprisingly long for where they're at (especially US 1 being within a very short distance of I-95 the whole time).
What about US 98 from I-75 at a Ridge Manor to I-110 in Pensacola? That is longer yet for that state.
Already mentioned thrice upthread. But yes well over 400 miles.
This one really surprised me to where I had to verify it myself. I didn't think there was any stretch that long in the east.