The only 75 zones I know of are I-135 and I-335 in Kansas. I think that I-530 is getting a bump to 75 to. Any others at 75 or even 80?
For Texas, I don't believe any 3dis are actually posted above 70 mph, though some HO/T lanes in the Dallas-Fort Worth metro may be 75 mph on at least one 3di.
The closest thing would be SH-130, which acts as a 3di bypass of I-35 thru Austin, though is not an interstate highway. That is posted at 85 mph on the southern half, and 80 mph on the northern half.
I-505 has 70 MPH zones in California.
Quote from: Max Rockatansky on May 08, 2020, 12:10:19 AM
I-505 has 70 MPH zones in California.
A lot of 3dis have 70 zones. 75 zones are probably a lot rarer.
Quote from: Roadgeekteen on May 08, 2020, 12:11:06 AM
Quote from: Max Rockatansky on May 08, 2020, 12:10:19 AM
I-505 has 70 MPH zones in California.
A lot of 3dis have 70 zones. 75 zones are probably a lot rarer.
Yes, you'd be hard pressed to find 70 MPH elsewhere on a 3D in California.
Quote from: Max Rockatansky on May 08, 2020, 12:18:33 AM
Quote from: Roadgeekteen on May 08, 2020, 12:11:06 AM
Quote from: Max Rockatansky on May 08, 2020, 12:10:19 AM
I-505 has 70 MPH zones in California.
A lot of 3dis have 70 zones. 75 zones are probably a lot rarer.
Yes, you'd be hard pressed to find 70 MPH elsewhere on a 3D in California.
I think that I-580 and I-205 have some, but I'm not sure.
I believe the most on I-275, I-375, I-475, I-675, I-194, I-196, I-296, I-496 and I-696 is 70 mph.
Is I-680 75 in Nebraska?
Most of Utah’s I-215 is 70 mph, but that’s just because Utah posts reasonable speed limits on urban freeways that can handle them.
I-469 on the east side of Fort Wayne is signed at 70 mph for almost the whole length.
I-265 and I-865 is signed as 65 mph.
I-465... yeah, let's not talk about that interstate with the speed limit of 55...
Georgia doesn't go above 70 MPH anywhere, but that at least includes portions of I-185, I-475, I-575, and I-985.
I-295 in VA I think is 70 mph.
Quote from: Roadgeekteen on May 08, 2020, 11:22:48 AM
Quote from: Flint1979 on May 08, 2020, 12:56:04 AM
Quote from: Roadgeekteen on May 08, 2020, 12:45:51 AM
Is I-680 75 in Nebraska?
I think it's 65.
I-680 and I-29 multiplex. When does I-29 drop in speed limit?
That's in Iowa, not Nebraska.
Additionally, I-680 ends at the southern I-29 junction and no longer overlaps I-29. The piece from the northern I-29 junction to I-80 was renumbered as I-880.
Quote from: Pink Jazz on May 08, 2020, 11:35:58 AM
I-295 in VA I think is 70 mph.
70 mph throughout except a drop to 65 mph near the northern I-95 interchange.
Quote from: Roadgeekteen on May 08, 2020, 12:20:59 AM
Quote from: Max Rockatansky on May 08, 2020, 12:18:33 AM
Quote from: Roadgeekteen on May 08, 2020, 12:11:06 AM
Quote from: Max Rockatansky on May 08, 2020, 12:10:19 AM
I-505 has 70 MPH zones in California.
A lot of 3dis have 70 zones. 75 zones are probably a lot rarer.
Yes, you'd be hard pressed to find 70 MPH elsewhere on a 3D in California.
I think that I-580 and I-205 have some, but I'm not sure.
580 does between 5 and 205. I didn't take pictures of any speed limit signs for 205 but it sounds right.
Quote from: sprjus4 on May 08, 2020, 11:38:53 AM
Quote from: Roadgeekteen on May 08, 2020, 11:22:48 AM
Quote from: Flint1979 on May 08, 2020, 12:56:04 AM
Quote from: Roadgeekteen on May 08, 2020, 12:45:51 AM
Is I-680 75 in Nebraska?
I think it's 65.
I-680 and I-29 multiplex. When does I-29 drop in speed limit?
That's in Iowa, not Nebraska.
Additionally, I-680 ends at the southern I-29 junction and no longer overlaps I-29. The piece from the northern I-29 junction to I-80 was renumbered as I-880.
Oh snap how did I not know that.
Quote from: Great Lakes Roads on May 08, 2020, 03:22:03 AM
I-465... yeah, let's not talk about that interstate with the speed limit of 55...
That is simply a suggestion. If you want to live, you will be driving 5-10+ MPH over.
Quote from: Roadgeekteen on May 08, 2020, 12:23:15 PM
Quote from: sprjus4 on May 08, 2020, 11:38:53 AM
Quote from: Roadgeekteen on May 08, 2020, 11:22:48 AM
Quote from: Flint1979 on May 08, 2020, 12:56:04 AM
Quote from: Roadgeekteen on May 08, 2020, 12:45:51 AM
Is I-680 75 in Nebraska?
I think it's 65.
I-680 and I-29 multiplex. When does I-29 drop in speed limit?
That's in Iowa, not Nebraska.
Additionally, I-680 ends at the southern I-29 junction and no longer overlaps I-29. The piece from the northern I-29 junction to I-80 was renumbered as I-880.
Oh snap how did I not know that.
It used to be that way, it was changed in September 2019.
For North Carolina, the maximum speed limit on interstate highways is 70 mph. A few 3di highways, including in urban areas, are posted up to 70 mph. The rest are posted at 65 mph.
I-540 - Entire length around Raleigh
I-485 - Entire length around Charlotte
I-140 - Entire length around Wilmington
Future I-587 between Zebulon and Greenville will be posted at 70 mph for its entire length. The current freeway is entirely 70 mph though is not up to interstate standards not currently designated.
Most other 3di are posted at 65 mph.
Quote from: Roadgeekteen on May 08, 2020, 11:22:48 AM
Quote from: Flint1979 on May 08, 2020, 12:56:04 AM
Quote from: Roadgeekteen on May 08, 2020, 12:45:51 AM
Is I-680 75 in Nebraska?
I think it's 65.
I-680 and I-29 multiplex. When does I-29 drop in speed limit?
Not anymore. The part of 680 east of 29 is now I-880. I-29 stays in Iowa and to my knowledge Iowa's highest speed limit is 70.
Posted at 70 in Illinois
* I-155
* I-172
* I-180 (as previously mentioned)
* I-280 (yet drops to 65 in Iowa)
* I-355 from I-80 to around I-55
* I-474
The first three would probably go up to 75 if Illinois does increase the maximum speed limit.
Posted at 70 in Missouri
* I-155
* I-229 outside of the downtown stretch (posted at 55)
* I-435: Sections posted at 70 on the north side?
Quote from: Roadgeekteen on May 08, 2020, 12:20:59 AM
Quote from: Max Rockatansky on May 08, 2020, 12:18:33 AM
Quote from: Roadgeekteen on May 08, 2020, 12:11:06 AM
Quote from: Max Rockatansky on May 08, 2020, 12:10:19 AM
I-505 has 70 MPH zones in California.
A lot of 3dis have 70 zones. 75 zones are probably a lot rarer.
Yes, you'd be hard pressed to find 70 MPH elsewhere on a 3D in California.
I think that I-580 and I-205 have some, but I'm not sure.
Both do in San Joaquin County. The I-580 part is much longer than the I-205 portion (since they dropped it to 65MPH through Tracy). I-580 basically misses Tracy, so keeps 70 MPH just about to the I-205 junction.
I am not sure about I-215 in California, but I thought so.
I am pretty sure that I-580 in Nevada is posted 70 MPH between Reno and Carson City and north of Reno. I am not sure when the I-580 designation stops and US-395 takes over.
Do any of the 80 MPH states have any 3dis to speak of? If I remember my maps correctly, their 3dis tend to be fairly near cities and would therefore be unlikely to be posted higher than 70MPH.
Quote from: michravera on May 09, 2020, 03:35:36 AM
Do any of the 80 MPH states have any 3dis to speak of? If I remember my maps correctly, their 3dis tend to be fairly near cities and would therefore be unlikely to be posted higher than 70MPH.
Closest would be the 80 mph and 85 mph segments of SH-130 that
serve as a 3di bypass of I-35 near Austin, TX, though it's not actually an interstate highway. I don't believe any actually are posted above 75 mph elsewhere in the country.
Your OP specifically mentioned two 3di highways that are very much not urban.
Quote from: kphoger on May 09, 2020, 03:32:20 PM
Your OP specifically mentioned two 3di highways that are very much not urban.
Yeah. I think that the toll part of I-470 is also 75.
Quote from: Flint1979 on May 09, 2020, 10:42:22 PM
In Michigan I-196 doesn't really serve it's purpose as a spur and gets quite aways away from an urban area. It's about 80 miles long. It really should have an even number as both ends are at an interstate.
The original routing of I-196 was a spur - from Grand Rapids to Muskegon. I-96 was supposed to continue from GR following what is now I-196.
But since all of what is now I-96 was completed first, they didn't think it made sense to have I-96 abruptly change to I-196 on the east side of GR, and the routes were swapped.
Quote from: GaryV on May 10, 2020, 07:15:08 AM
Quote from: Flint1979 on May 09, 2020, 10:42:22 PM
In Michigan I-196 doesn't really serve it's purpose as a spur and gets quite aways away from an urban area. It's about 80 miles long. It really should have an even number as both ends are at an interstate.
The original routing of I-196 was a spur - from Grand Rapids to Muskegon. I-96 was supposed to continue from GR following what is now I-196.
But since all of what is now I-96 was completed first, they didn't think it made sense to have I-96 abruptly change to I-196 on the east side of GR, and the routes were swapped.
Yeah I know. It should have got it's number changed at that time. Either I-296 taking the hidden I-296 out and putting that number on 196. Not very many people actually know they are on I-296 when they are anyway.
That would have been a strange routing. Detroit to Lansing to Grand Rapids back down to Benton Harbor. That explains why I-96 ends at US-31 too.
I-196 though currently isn't a spur.
Quote from: Flint1979 on May 10, 2020, 08:48:11 AM
Quote from: GaryV on May 10, 2020, 07:15:08 AM
Quote from: Flint1979 on May 09, 2020, 10:42:22 PM
In Michigan I-196 doesn't really serve it's purpose as a spur and gets quite aways away from an urban area. It's about 80 miles long. It really should have an even number as both ends are at an interstate.
The original routing of I-196 was a spur - from Grand Rapids to Muskegon. I-96 was supposed to continue from GR following what is now I-196.
But since all of what is now I-96 was completed first, they didn't think it made sense to have I-96 abruptly change to I-196 on the east side of GR, and the routes were swapped.
Yeah I know. It should have got it's number changed at that time. Either I-296 taking the hidden I-296 out and putting that number on 196. Not very many people actually know they are on I-296 when they are anyway.
That would have been a strange routing. Detroit to Lansing to Grand Rapids back down to Benton Harbor. That explains why I-96 ends at US-31 too.
I-196 though currently isn't a spur.
I guess it's kinda a spur from I-94 to Grand Rapids.
Quote from: sprjus4 on May 08, 2020, 01:16:22 PM
Quote from: Roadgeekteen on May 08, 2020, 12:23:15 PM
Quote from: sprjus4 on May 08, 2020, 11:38:53 AM
Quote from: Roadgeekteen on May 08, 2020, 11:22:48 AM
Quote from: Flint1979 on May 08, 2020, 12:56:04 AM
Quote from: Roadgeekteen on May 08, 2020, 12:45:51 AM
Is I-680 75 in Nebraska?
I think it's 65.
I-680 and I-29 multiplex. When does I-29 drop in speed limit?
That's in Iowa, not Nebraska.
Additionally, I-680 ends at the southern I-29 junction and no longer overlaps I-29. The piece from the northern I-29 junction to I-80 was renumbered as I-880.
Oh snap how did I not know that.
It used to be that way, it was changed in September 2019.
Likewise snap, I did not know that either. How am I not up on these things anymore? :confused:
Quote from: empirestate on May 10, 2020, 11:17:32 AM
Quote from: sprjus4 on May 08, 2020, 01:16:22 PM
Quote from: Roadgeekteen on May 08, 2020, 12:23:15 PM
Quote from: sprjus4 on May 08, 2020, 11:38:53 AM
Quote from: Roadgeekteen on May 08, 2020, 11:22:48 AM
Quote from: Flint1979 on May 08, 2020, 12:56:04 AM
Quote from: Roadgeekteen on May 08, 2020, 12:45:51 AM
Is I-680 75 in Nebraska?
I think it's 65.
I-680 and I-29 multiplex. When does I-29 drop in speed limit?
That's in Iowa, not Nebraska.
Additionally, I-680 ends at the southern I-29 junction and no longer overlaps I-29. The piece from the northern I-29 junction to I-80 was renumbered as I-880.
Oh snap how did I not know that.
It used to be that way, it was changed in September 2019.
Likewise snap, I did not know that either. How am I not up on these things anymore? :confused:
I wasn't active on the forum when it changed, it was also only mentioned in the central states board.
Quote from: sprjus4 on May 09, 2020, 04:13:21 AM
Quote from: michravera on May 09, 2020, 03:35:36 AM
Do any of the 80 MPH states have any 3dis to speak of? If I remember my maps correctly, their 3dis tend to be fairly near cities and would therefore be unlikely to be posted higher than 70MPH.
Closest would be the 80 mph and 85 mph segments of SH-130 that serve as a 3di bypass of I-35 near Austin, TX, though it's not actually an interstate highway. I don't believe any actually are posted above 75 mph elsewhere in the country.
TX SH-130 is *NOT* a 3di. But, you are right. Texas is an 80MPH state that has at least quite a few 3dis.
Quote from: michravera on May 10, 2020, 11:49:12 AM
Quote from: sprjus4 on May 09, 2020, 04:13:21 AM
Quote from: michravera on May 09, 2020, 03:35:36 AM
Do any of the 80 MPH states have any 3dis to speak of? If I remember my maps correctly, their 3dis tend to be fairly near cities and would therefore be unlikely to be posted higher than 70MPH.
Closest would be the 80 mph and 85 mph segments of SH-130 that serve as a 3di bypass of I-35 near Austin, TX, though it's not actually an interstate highway. I don't believe any actually are posted above 75 mph elsewhere in the country.
TX SH-130 is *NOT* a 3di. But, you are right. Texas is an 80MPH state that has at least quite a few 3dis.
Yes, not a 3di, but the only highway in the state that serves as one that is 80 mph. The only thing preventing actual designation is that it's a toll road. All the actual 3dis top at 70 mph IIRC.
Quote from: Roadgeekteen on May 10, 2020, 10:23:47 AM
Quote from: Flint1979 on May 10, 2020, 08:48:11 AM
Quote from: GaryV on May 10, 2020, 07:15:08 AM
Quote from: Flint1979 on May 09, 2020, 10:42:22 PM
In Michigan I-196 doesn't really serve it's purpose as a spur and gets quite aways away from an urban area. It's about 80 miles long. It really should have an even number as both ends are at an interstate.
The original routing of I-196 was a spur - from Grand Rapids to Muskegon. I-96 was supposed to continue from GR following what is now I-196.
But since all of what is now I-96 was completed first, they didn't think it made sense to have I-96 abruptly change to I-196 on the east side of GR, and the routes were swapped.
Yeah I know. It should have got it's number changed at that time. Either I-296 taking the hidden I-296 out and putting that number on 196. Not very many people actually know they are on I-296 when they are anyway.
That would have been a strange routing. Detroit to Lansing to Grand Rapids back down to Benton Harbor. That explains why I-96 ends at US-31 too.
I-196 though currently isn't a spur.
I guess it's kinda a spur from I-94 to Grand Rapids.
Read what Gary said. If it was a spur to Grand Rapids I believe it would be a child of I-94 instead.
Quote from: Flint1979 on May 10, 2020, 02:37:42 PM
Quote from: Roadgeekteen on May 10, 2020, 10:23:47 AM
Quote from: Flint1979 on May 10, 2020, 08:48:11 AM
Quote from: GaryV on May 10, 2020, 07:15:08 AM
Quote from: Flint1979 on May 09, 2020, 10:42:22 PM
In Michigan I-196 doesn't really serve it's purpose as a spur and gets quite aways away from an urban area. It's about 80 miles long. It really should have an even number as both ends are at an interstate.
The original routing of I-196 was a spur - from Grand Rapids to Muskegon. I-96 was supposed to continue from GR following what is now I-196.
But since all of what is now I-96 was completed first, they didn't think it made sense to have I-96 abruptly change to I-196 on the east side of GR, and the routes were swapped.
Yeah I know. It should have got it's number changed at that time. Either I-296 taking the hidden I-296 out and putting that number on 196. Not very many people actually know they are on I-296 when they are anyway.
That would have been a strange routing. Detroit to Lansing to Grand Rapids back down to Benton Harbor. That explains why I-96 ends at US-31 too.
I-196 though currently isn't a spur.
I guess it's kinda a spur from I-94 to Grand Rapids.
Read what Gary said. If it was a spur to Grand Rapids I believe it would be a child of I-94 instead.
It should be. Maybe I-394.
In Pennsylvania, I-276, I-380, and I-476 all have 70 MPH sections. These are the highest 3DI speed limits you'll find in the Northeast. The common trend with 3 of them is that they're part of of the Pennsylvania Turnpike system.
Maine used to have a 70 MPH limit on I-295, but this was reduced back to 65 due to safety concerns.
For 70, there are MANY examples, including (but not limited to) 580 Nevada, 215 Utah, 435 around Kansas City, and 355 Illinois. It should be noted that Utah will not reduce the speed limit on an Interstate below 70 unless there are severe geometric restrictions.
As far as 75 MPH 3DIs, I think all examples have been covered upthread. The 75-80 MPH states are pretty light on 3DIs in general and states that allow 75-80 almost never allow it in urban/suburban areas, dropping if there is even a house nearby.
Quote from: cl94 on May 10, 2020, 02:48:52 PM
In Pennsylvania, I-276, I-380, and I-476 all have 70 MPH sections. These are the highest 3DI speed limits you'll find in the Northeast. The common trend with 3 of them is that they're part of of the Pennsylvania Turnpike system.
Maine used to have a 70 MPH limit on I-295, but this was reduced back to 65 due to safety concerns.
For 70, there are MANY examples, including (but not limited to) 580 Nevada, 215 Utah, 435 around Kansas City, and 355 Illinois. It should be noted that Utah will not reduce the speed limit on an Interstate below 70 unless there are severe geometric restrictions.
As far as 75 MPH 3DIs, I think all examples have been covered upthread. The 75-80 MPH states are pretty light on 3DIs in general and states that allow 75-80 almost never allow it in urban/suburban areas, dropping if there is even a house nearby.
Part of I-295 is still 70. Also I-380 isn't part of the Pennsylvania turnpike system (I think).
Quote from: cl94 on May 10, 2020, 02:48:52 PM
states that allow 75-80 almost never allow it in urban/suburban areas, dropping if there is even a house nearby.
Then there's SH-130 Toll which is 80 mph through a growing suburban area of Austin with intersecting east-west freeways.
Quote from: Roadgeekteen on May 10, 2020, 03:39:50 PM
Quote from: cl94 on May 10, 2020, 02:48:52 PM
In Pennsylvania, I-276, I-380, and I-476 all have 70 MPH sections. These are the highest 3DI speed limits you'll find in the Northeast. The common trend with 3 of them is that they're part of of the Pennsylvania Turnpike system.
Maine used to have a 70 MPH limit on I-295, but this was reduced back to 65 due to safety concerns.
For 70, there are MANY examples, including (but not limited to) 580 Nevada, 215 Utah, 435 around Kansas City, and 355 Illinois. It should be noted that Utah will not reduce the speed limit on an Interstate below 70 unless there are severe geometric restrictions.
As far as 75 MPH 3DIs, I think all examples have been covered upthread. The 75-80 MPH states are pretty light on 3DIs in general and states that allow 75-80 almost never allow it in urban/suburban areas, dropping if there is even a house nearby.
Also I-380 isn't part of the Pennsylvania turnpike system (I think).
Can confirm I-380 is a free road that is not part of the Turnpike system - it was originally part of the I-82 from Scranton to NYC in the early interstate days.
The "3" was a typo. Should have been a "2". I-82 PA was renumbered well before the first section opened.
Express lanes in DFW are indeed 75 mph! Along I-635 and I-820. I think any new build of I-369 anywhere south of Texarkana has a good chance of being signed 75, too.
(https://uploads.tapatalk-cdn.com/20200510/0c6dfffa0ff896a2a537213c556d6615.jpg)
(https://uploads.tapatalk-cdn.com/20200510/dcb1ec3fd40baed729c218c1819eefa2.jpg)
iPhone
Quote from: cl94 on May 10, 2020, 03:53:26 PM
The "3" was a typo. Should have been a "2". I-82 PA was renumbered well before the first section opened.
There is no I-280 in PA :confused:
Quote from: sprjus4 on May 10, 2020, 12:36:25 PM
Quote from: michravera on May 10, 2020, 11:49:12 AM
Quote from: sprjus4 on May 09, 2020, 04:13:21 AM
Quote from: michravera on May 09, 2020, 03:35:36 AM
Do any of the 80 MPH states have any 3dis to speak of? If I remember my maps correctly, their 3dis tend to be fairly near cities and would therefore be unlikely to be posted higher than 70MPH.
Closest would be the 80 mph and 85 mph segments of SH-130 that serve as a 3di bypass of I-35 near Austin, TX, though it's not actually an interstate highway. I don't believe any actually are posted above 75 mph elsewhere in the country.
Just because something is a freeway, doesn't make it an interstate. Lots of freeways, especially in Texas and California and Arizona, aren't.
TX SH-130 is *NOT* a 3di. But, you are right. Texas is an 80MPH state that has at least quite a few 3dis.
Yes, not a 3di, but the only highway in the state that serves as one that is 80 mph. The only thing preventing actual designation is that it's a toll road. All the actual 3dis top at 70 mph IIRC.
Quote from: michravera on May 09, 2020, 03:35:36 AM
I am pretty sure that I-580 in Nevada is posted 70 MPH between Reno and Carson City and north of Reno. I am not sure when the I-580 designation stops and US-395 takes over.
Confirmed that I-580 is 70mph from Eastlake Blvd (just north of Carson City) to SR 431 (first/southernmost interchange in Reno).
There is no 70mph speed on I-580 north of Reno, since I-580 ends at the I-80 interchange in Reno. US 395 north of Reno remains 65mph all the way into California.