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National Boards => General Highway Talk => Topic started by: wriddle082 on June 13, 2020, 11:29:07 PM

Title: Longest distance between interstate junctions
Post by: wriddle082 on June 13, 2020, 11:29:07 PM
Wondering what the longest distance is along an interstate between junctions of other interstates.  I'm thinking it's either I-5 between I-505 at Dunnigan, CA and I-105 in Eugene, OR, or I-90 between I-82 in Ellensburg, WA and I-15 in Butte, MT.  Anything out there longer than either of those?
Title: Re: Longest distance between interstate junctions
Post by: Konza on June 13, 2020, 11:30:56 PM
I-94 East of its west end?  I-194 in Bismarck is unsigned...

According to Wikipedia, this stretch would be 598.7 miles over which the only Interstate sign you would see is an I-94 sign.
Title: Re: Longest distance between interstate junctions
Post by: Hwy 61 Revisited on June 13, 2020, 11:34:39 PM
Quote from: wriddle082 on June 13, 2020, 11:29:07 PM
Wondering what the longest distance is along an interstate between junctions of other interstates.  I'm thinking it's either I-5 between I-505 at Dunnigan, CA and I-105 in Eugene, OR, or I-90 between I-82 in Ellensburg, WA and I-15 in Butte, MT.  Anything out there longer than either of those?


I-80 between I-580 in Reno and I-215 in SLC is 512 miles, longer than both of them.
Title: Re: Longest distance between interstate junctions
Post by: Roadgeekteen on June 14, 2020, 12:28:42 AM
Almost nothing very long on the east coast. Wonder what the longest is.
Title: Re: Longest distance between interstate junctions
Post by: Ben114 on June 14, 2020, 12:45:11 AM
Quote from: Roadgeekteen on June 14, 2020, 12:28:42 AM
Almost nothing very long on the east coast. Wonder what the longest is.
It would be I-95 in Maine at about 200 miles between I-295 and the Canadian border.
Title: Re: Longest distance between interstate junctions
Post by: Konza on June 14, 2020, 12:50:25 AM
A top ten would be interesting here.

I-20 from I-10 East?   420.5 miles.
I-10 between I-19 and I-25?   293.2 miles.
I-40 between I-17 and I-25?   323.9 miles.
I-70 west of Denver?  The next post says 501 miles.
I-80 from Cheyenne to I-84?  428.9 miles.
I-10 from I-20 to I-410 in San Antonio?  386 miles.
I-90 from Rapid City to Sioux Falls?  338.7 miles.
I-25 from Albuquerque to Denver?   434.4 miles.
I-70 from Denver to Salina?  416.7 miles.
Title: Re: Longest distance between interstate junctions
Post by: US 89 on June 14, 2020, 01:23:53 AM
I-70 has 501 miles between I-15 at Cove Fort and I-76 near Denver.
Title: Re: Longest distance between interstate junctions
Post by: michravera on June 14, 2020, 04:23:02 AM
Quote from: Hwy 61 Revisited on June 13, 2020, 11:34:39 PM
Quote from: wriddle082 on June 13, 2020, 11:29:07 PM
Wondering what the longest distance is along an interstate between junctions of other interstates.  I'm thinking it's either I-5 between I-505 at Dunnigan, CA and I-105 in Eugene, OR, or I-90 between I-82 in Ellensburg, WA and I-15 in Butte, MT.  Anything out there longer than either of those?


I-80 between I-580 in Reno and I-215 in SLC is 512 miles, longer than both of them.

Does I-10 hit anything besides I-19? I took the bus from LA to Austin (via San Antonio) and don't remember actually seeing a junction with I-8, I-17, I-20, or I-25. It looks like the route of I-10 must get close to all of these, but I certainly missed all of the I-junctions. It's a long way from Tuscon to Las Cruces and event further Van Horn and Fort Stockton.
Title: Re: Longest distance between interstate junctions
Post by: Roadgeekteen on June 14, 2020, 10:21:44 AM
Quote from: Ben114 on June 14, 2020, 12:45:11 AM
Quote from: Roadgeekteen on June 14, 2020, 12:28:42 AM
Almost nothing very long on the east coast. Wonder what the longest is.
It would be I-95 in Maine at about 200 miles between I-295 and the Canadian border.
I-395 in Bangor.
Title: Re: Longest distance between interstate junctions
Post by: Roadgeekteen on June 14, 2020, 10:22:30 AM
Quote from: michravera on June 14, 2020, 04:23:02 AM
Quote from: Hwy 61 Revisited on June 13, 2020, 11:34:39 PM
Quote from: wriddle082 on June 13, 2020, 11:29:07 PM
Wondering what the longest distance is along an interstate between junctions of other interstates.  I'm thinking it's either I-5 between I-505 at Dunnigan, CA and I-105 in Eugene, OR, or I-90 between I-82 in Ellensburg, WA and I-15 in Butte, MT.  Anything out there longer than either of those?


I-80 between I-580 in Reno and I-215 in SLC is 512 miles, longer than both of them.

Does I-10 hit anything besides I-19? I took the bus from LA to Austin (via San Antonio) and don't remember actually seeing a junction with I-8, I-17, I-20, or I-25. It looks like the route of I-10 must get close to all of these, but I certainly missed all of the I-junctions. It's a long way from Tuscon to Las Cruces and event further Van Horn and Fort Stockton.
You must of been sleeping, it interchanges all of them.
Title: Re: Longest distance between interstate junctions
Post by: SectorZ on June 14, 2020, 10:37:07 AM
Quote from: Ben114 on June 14, 2020, 12:45:11 AM
Quote from: Roadgeekteen on June 14, 2020, 12:28:42 AM
Almost nothing very long on the east coast. Wonder what the longest is.
It would be I-95 in Maine at about 200 miles between I-295 and the Canadian border.

Don't forget I-395 in Bangor. It's 122 miles from there to NB.
Title: Re: Longest distance between interstate junctions
Post by: jeffandnicole on June 14, 2020, 10:57:43 AM
Quote from: Roadgeekteen on June 14, 2020, 10:21:44 AM
Quote from: Ben114 on June 14, 2020, 12:45:11 AM
Quote from: Roadgeekteen on June 14, 2020, 12:28:42 AM
Almost nothing very long on the east coast. Wonder what the longest is.
It would be I-95 in Maine at about 200 miles between I-295 and the Canadian border.
I-395 in Bangor.

It appears the longest east coast distance may actually be in Florida...

On I-95, there's about 236 miles of interstate-free interchanges between I-4 near Daytona Beach and I-595 in Fort Lauderdale.
Title: Re: Longest distance between interstate junctions
Post by: Roadgeekteen on June 14, 2020, 10:59:34 AM
Quote from: jeffandnicole on June 14, 2020, 10:57:43 AM
Quote from: Roadgeekteen on June 14, 2020, 10:21:44 AM
Quote from: Ben114 on June 14, 2020, 12:45:11 AM
Quote from: Roadgeekteen on June 14, 2020, 12:28:42 AM
Almost nothing very long on the east coast. Wonder what the longest is.
It would be I-95 in Maine at about 200 miles between I-295 and the Canadian border.
I-395 in Bangor.

It appears the longest east coast distance may actually be in Florida...

On I-95, there's about 236 miles of interstate-free interchanges between I-4 near Daytona Beach and I-595 in Fort Lauderdale.
What about I-75 between I-595 and I-275 in Florida?
Title: Re: Longest distance between interstate junctions
Post by: jp the roadgeek on June 14, 2020, 11:02:31 AM
Quote from: SectorZ on June 14, 2020, 10:37:07 AM
Quote from: Ben114 on June 14, 2020, 12:45:11 AM
Quote from: Roadgeekteen on June 14, 2020, 12:28:42 AM
Almost nothing very long on the east coast. Wonder what the longest is.
It would be I-95 in Maine at about 200 miles between I-295 and the Canadian border.

Don't forget I-395 in Bangor. It's 122 miles from there to NB.

Longest in the northeast is probably I-87 between I-90 and the Canadian border (175 miles).
Title: Re: Longest distance between interstate junctions
Post by: jeffandnicole on June 14, 2020, 11:06:57 AM
Quote from: Roadgeekteen on June 14, 2020, 10:59:34 AM
Quote from: jeffandnicole on June 14, 2020, 10:57:43 AM
Quote from: Roadgeekteen on June 14, 2020, 10:21:44 AM
Quote from: Ben114 on June 14, 2020, 12:45:11 AM
Quote from: Roadgeekteen on June 14, 2020, 12:28:42 AM
Almost nothing very long on the east coast. Wonder what the longest is.
It would be I-95 in Maine at about 200 miles between I-295 and the Canadian border.
I-395 in Bangor.

It appears the longest east coast distance may actually be in Florida...

On I-95, there's about 236 miles of interstate-free interchanges between I-4 near Daytona Beach and I-595 in Fort Lauderdale.
What about I-75 between I-595 and I-275 in Florida?

That appears to be just slightly shorter, at around 210 miles.
Title: Re: Longest distance between interstate junctions
Post by: Ketchup99 on June 14, 2020, 11:13:29 AM
The longest in the Northeast might actually be I-80 in Pennsylvania. From exit 19 (I-79) to exit 212 (I-180), there's no interstate junction - a distance of 193 miles. I-99 is served at exit 161, but it technically terminates just south of the interchange, meaning it doesn't count. If not for the tiny I-180, the next interstate would be I-81 at exit 260 - a whopping 241 miles.
Title: Re: Longest distance between interstate junctions
Post by: sprjus4 on June 14, 2020, 11:37:21 AM
Quote from: jeffandnicole on June 14, 2020, 10:57:43 AM
Quote from: Roadgeekteen on June 14, 2020, 10:21:44 AM
Quote from: Ben114 on June 14, 2020, 12:45:11 AM
Quote from: Roadgeekteen on June 14, 2020, 12:28:42 AM
Almost nothing very long on the east coast. Wonder what the longest is.
It would be I-95 in Maine at about 200 miles between I-295 and the Canadian border.
I-395 in Bangor.

It appears the longest east coast distance may actually be in Florida...

On I-95, there's about 236 miles of interstate-free interchanges between I-4 near Daytona Beach and I-595 in Fort Lauderdale.
In Florida, I-10 runs 283 miles without interstate junctions between I-75 in Lake City and I-110 in Pensacola.
Title: Re: Longest distance between interstate junctions
Post by: sprjus4 on June 14, 2020, 11:40:05 AM
Quote from: michravera on June 14, 2020, 04:23:02 AM
Quote from: Hwy 61 Revisited on June 13, 2020, 11:34:39 PM
Quote from: wriddle082 on June 13, 2020, 11:29:07 PM
Wondering what the longest distance is along an interstate between junctions of other interstates.  I'm thinking it's either I-5 between I-505 at Dunnigan, CA and I-105 in Eugene, OR, or I-90 between I-82 in Ellensburg, WA and I-15 in Butte, MT.  Anything out there longer than either of those?


I-80 between I-580 in Reno and I-215 in SLC is 512 miles, longer than both of them.

Does I-10 hit anything besides I-19? I took the bus from LA to Austin (via San Antonio) and don't remember actually seeing a junction with I-8, I-17, I-20, or I-25. It looks like the route of I-10 must get close to all of these, but I certainly missed all of the I-junctions. It's a long way from Tuscon to Las Cruces and event further Van Horn and Fort Stockton.
It intersects I-17, I-8, I-19, I-25, and I-20, in order from west to east.
Title: Re: Longest distance between interstate junctions
Post by: adwerkema on June 14, 2020, 12:13:36 PM
In Michigan, it's I-75 between Saginaw and Canada (240 miles).
Title: Re: Longest distance between interstate junctions
Post by: sprjus4 on June 14, 2020, 12:27:18 PM
Virginia:
I-64 between I-295 west of Richmond and I-81 near Staunton - 87 miles

North Carolina:
I-40 between I-240 east of Asheville and I-77 near Statesville - 99 miles
Title: Re: Longest distance between interstate junctions
Post by: mgk920 on June 14, 2020, 01:35:55 PM
For Wisconsin, it would be I-94 between I-90 (Tomah Interchange) and the Minnesota state line, 146.  Adding the short continuation to I-494/694 in Minnesota, it would be just under 160.

Mike
Title: Re: Longest distance between interstate junctions
Post by: webny99 on June 14, 2020, 01:59:40 PM
Quote from: jp the roadgeek on June 14, 2020, 11:02:31 AM
Quote from: SectorZ on June 14, 2020, 10:37:07 AM
Quote from: Ben114 on June 14, 2020, 12:45:11 AM
Quote from: Roadgeekteen on June 14, 2020, 12:28:42 AM
Almost nothing very long on the east coast. Wonder what the longest is.
It would be I-95 in Maine at about 200 miles between I-295 and the Canadian border.

Don't forget I-395 in Bangor. It's 122 miles from there to NB.

Longest in the northeast is probably I-87 between I-90 and the Canadian border (175 miles).

I-86 from the western terminus to I-390 comes close, at about 150 miles.
Title: Re: Longest distance between interstate junctions
Post by: Roadgeekteen on June 14, 2020, 05:59:33 PM
For Massachusetts, probably I-91 between I-90 and I-89.
Title: Re: Longest distance between interstate junctions
Post by: Ben114 on June 14, 2020, 06:39:33 PM
Quote from: Roadgeekteen on June 14, 2020, 05:59:33 PM
For Massachusetts, probably I-91 between I-90 and I-89.
Seems about right, at 113 miles. Second would probably I-90 between I-91 and I-787 at 83 miles.
Title: Re: Longest distance between interstate junctions
Post by: michravera on June 14, 2020, 07:03:52 PM
Quote from: sprjus4 on June 14, 2020, 11:40:05 AM
Quote from: michravera on June 14, 2020, 04:23:02 AM
Quote from: Hwy 61 Revisited on June 13, 2020, 11:34:39 PM
Quote from: wriddle082 on June 13, 2020, 11:29:07 PM
Wondering what the longest distance is along an interstate between junctions of other interstates.  I'm thinking it's either I-5 between I-505 at Dunnigan, CA and I-105 in Eugene, OR, or I-90 between I-82 in Ellensburg, WA and I-15 in Butte, MT.  Anything out there longer than either of those?


I-80 between I-580 in Reno and I-215 in SLC is 512 miles, longer than both of them.

Does I-10 hit anything besides I-19? I took the bus from LA to Austin (via San Antonio) and don't remember actually seeing a junction with I-8, I-17, I-20, or I-25. It looks like the route of I-10 must get close to all of these, but I certainly missed all of the I-junctions. It's a long way from Tuscon to Las Cruces and event further Van Horn and Fort Stockton.
It intersects I-17, I-8, I-19, I-25, and I-20, in order from west to east.

I was certainly TRYING to sleep some of the way from El Paso to San Antonio, but it is possible that we weren't on I-10 the whole way. I was trying to be very much awake between Phoenix and El Paso (daytime leg) because I had never been in New Mexico before. I was expecting Wily Coyote and Roadrunner and some unusual rock formations to show up. Nothing like that on I-10. On I-10 Eastern Arizona, New Mexico, and West Texas all pretty much look the same. If any of that exists, it's not on I-10.

Title: Re: Longest distance between interstate junctions
Post by: CtrlAltDel on June 14, 2020, 07:21:17 PM
Quote from: michravera on June 14, 2020, 07:03:52 PM
I was certainly TRYING to sleep some of the way from El Paso to San Antonio, but it is possible that we weren't on I-10 the whole way. I was trying to be very much awake between Phoenix and El Paso (daytime leg) because I had never been in New Mexico before. I was expecting Wily Coyote and Roadrunner and some unusual rock formations to show up. Nothing like that on I-10. On I-10 Eastern Arizona, New Mexico, and West Texas all pretty much look the same. If any of that exists, it's not on I-10.

The Roadrunner landscape is by and large north of I-10. It's more or less the orange area on this map.

(https://i.imgur.com/GTUuB1G.png)
Title: Re: Longest distance between interstate junctions
Post by: kphoger on June 15, 2020, 11:49:41 AM
Quote from: michravera on June 14, 2020, 07:03:52 PM

Quote from: sprjus4 on June 14, 2020, 11:40:05 AM

Quote from: michravera on June 14, 2020, 04:23:02 AM

Quote from: Hwy 61 Revisited on June 13, 2020, 11:34:39 PM

Quote from: wriddle082 on June 13, 2020, 11:29:07 PM
Wondering what the longest distance is along an interstate between junctions of other interstates.  I'm thinking it's either I-5 between I-505 at Dunnigan, CA and I-105 in Eugene, OR, or I-90 between I-82 in Ellensburg, WA and I-15 in Butte, MT.  Anything out there longer than either of those?

I-80 between I-580 in Reno and I-215 in SLC is 512 miles, longer than both of them.

Does I-10 hit anything besides I-19? I took the bus from LA to Austin (via San Antonio) and don't remember actually seeing a junction with I-8, I-17, I-20, or I-25. It looks like the route of I-10 must get close to all of these, but I certainly missed all of the I-junctions. It's a long way from Tuscon to Las Cruces and event further Van Horn and Fort Stockton.

It intersects I-17, I-8, I-19, I-25, and I-20, in order from west to east.

I was certainly TRYING to sleep some of the way from El Paso to San Antonio, but it is possible that we weren't on I-10 the whole way. I was trying to be very much awake between Phoenix and El Paso (daytime leg) because I had never been in New Mexico before. I was expecting Wily Coyote and Roadrunner and some unusual rock formations to show up. Nothing like that on I-10. On I-10 Eastern Arizona, New Mexico, and West Texas all pretty much look the same. If any of that exists, it's not on I-10.

As far as I'm aware, all Greyhound buses between LA and El Paso take I-10 the whole way.  All five pre-COVID schedules between LA and El Paso had stops in at least Blythe/Quartzsite, Phoenix, and Lordsburg.

While your bus likely did not pass through the eastern I-17 junction after leaving Phoenix (using 24th Street instead), it certainly passed through the western one on the way into town.  In fact, it's quite likely your bus even used that interchange to access the Phoenix station by way of I-17 rather than using I-10 all the way.

The 8:25 AM departure from LA (schedule 1418) has a stop at the Love's immediately east of the I-8 junction, but I see no reason the bus would have cut the corner and avoided the junction.  Possible but unlikely.

The 2:45 AM departure from LA (schedule 1444) would have used the I-25 junction in order to get from the Las Cruces bus station back onto I-10.  All other schedules would have skipped Las Cruces and passed directly through the I-25 interchange to stay on I-10.

As for the El Paso—San Antonio leg, both pre-COVID schedules had stops in Van Horn and Fort Stockton, so your bus certainly passed through the I-20 junction.
Title: Re: Longest distance between interstate junctions
Post by: Konza on June 15, 2020, 07:53:24 PM
Quote from: michravera on June 14, 2020, 07:03:52 PM
I was certainly TRYING to sleep some of the way from El Paso to San Antonio, but it is possible that we weren't on I-10 the whole way. I was trying to be very much awake between Phoenix and El Paso (daytime leg) because I had never been in New Mexico before. I was expecting Wily Coyote and Roadrunner and some unusual rock formations to show up. Nothing like that on I-10. On I-10 Eastern Arizona, New Mexico, and West Texas all pretty much look the same. If any of that exists, it's not on I-10.

You must have slept through the Texas Canyon area between Benson and Willcox, which, in my opinion is the most interesting scenery along I-10 in Arizona.

The most memorable things about I-10 west of Las Cruces are the various series of signs that tell you what to do in the event of a dust storm.
Title: Re: Longest distance between interstate junctions
Post by: michravera on June 15, 2020, 08:23:47 PM
Quote from: kphoger on June 15, 2020, 11:49:41 AM
Quote from: michravera on June 14, 2020, 07:03:52 PM

Quote from: sprjus4 on June 14, 2020, 11:40:05 AM

Quote from: michravera on June 14, 2020, 04:23:02 AM

Quote from: Hwy 61 Revisited on June 13, 2020, 11:34:39 PM

Quote from: wriddle082 on June 13, 2020, 11:29:07 PM
Wondering what the longest distance is along an interstate between junctions of other interstates.  I'm thinking it's either I-5 between I-505 at Dunnigan, CA and I-105 in Eugene, OR, or I-90 between I-82 in Ellensburg, WA and I-15 in Butte, MT.  Anything out there longer than either of those?

I-80 between I-580 in Reno and I-215 in SLC is 512 miles, longer than both of them.

Does I-10 hit anything besides I-19? I took the bus from LA to Austin (via San Antonio) and don't remember actually seeing a junction with I-8, I-17, I-20, or I-25. It looks like the route of I-10 must get close to all of these, but I certainly missed all of the I-junctions. It's a long way from Tuscon to Las Cruces and event further Van Horn and Fort Stockton.

It intersects I-17, I-8, I-19, I-25, and I-20, in order from west to east.

I was certainly TRYING to sleep some of the way from El Paso to San Antonio, but it is possible that we weren't on I-10 the whole way. I was trying to be very much awake between Phoenix and El Paso (daytime leg) because I had never been in New Mexico before. I was expecting Wily Coyote and Roadrunner and some unusual rock formations to show up. Nothing like that on I-10. On I-10 Eastern Arizona, New Mexico, and West Texas all pretty much look the same. If any of that exists, it's not on I-10.

As far as I'm aware, all Greyhound buses between LA and El Paso take I-10 the whole way.  All five pre-COVID schedules between LA and El Paso had stops in at least Blythe/Quartzsite, Phoenix, and Lordsburg.

While your bus likely did not pass through the eastern I-17 junction after leaving Phoenix (using 24th Street instead), it certainly passed through the western one on the way into town.  In fact, it's quite likely your bus even used that interchange to access the Phoenix station by way of I-17 rather than using I-10 all the way.

The 8:25 AM departure from LA (schedule 1418) has a stop at the Love's immediately east of the I-8 junction, but I see no reason the bus would have cut the corner and avoided the junction.  Possible but unlikely.

The 2:45 AM departure from LA (schedule 1444) would have used the I-25 junction in order to get from the Las Cruces bus station back onto I-10.  All other schedules would have skipped Las Cruces and passed directly through the I-25 interchange to stay on I-10.

As for the El Paso—San Antonio leg, both pre-COVID schedules had stops in Van Horn and Fort Stockton, so your bus certainly passed through the I-20 junction.

The LA-Phoenix leg was the second section of a bus that was supposed to have left in the first few minutes of the new day (and actually left about 1:00). So, most of that trip was in darkness. I had seen I-10 from CASR/I-210 to Phoenix before, so nothing lost traveling in the dark. Our only stop was for a "real restroom/smoke/grab a burrito" break.

Title: Re: Longest distance between interstate junctions
Post by: kphoger on June 16, 2020, 10:04:20 AM
Quote from: michravera on June 15, 2020, 08:23:47 PM
The LA-Phoenix leg was the second section of a bus that was supposed to have left in the first few minutes of the new day (and actually left about 1:00). So, most of that trip was in darkness. I had seen I-10 from CASR/I-210 to Phoenix before, so nothing lost traveling in the dark. Our only stop was for a "real restroom/smoke/grab a burrito" break.

I can only see timetables back as far as June 2017, but the only overnight LA-Phoenix schedule leaves LA at 11:00 PM, and stops only at the Pilot truck stop in Quartzsite.  That schedule continues on to San Antonio, stopping at Mesa, Lordsburg, Deming, Las Cruces, El Paso, Van Horn, Fort Stockton, Junction, and Kerrville–arriving in San Antonio just after 6:00 AM.