For Massachusetts, it's 65 on MA 24, MA 140, US 44 freeway section, US 3, MA 25, and MA 146.
You can do other states as well as we don't have a forum member from every state.
70 MPH on CA 99 south of Merced. There was also a 70 segment on US 101 south of King City which was downgraded recently to 65 MPH.
In Alabama, the highest non-Interstate speed limits will always be 65 MPH, and only on dual carriageways. Two-lane roads won't be any higher than 55.
All of the neighboring states (TN, FL, GA and MS) are the same way.
Quote from: Max Rockatansky on December 06, 2024, 04:46:43 PM70 MPH on CA 99 south of Merced. There was also a 70 segment on US 101 south of King City which was downgraded recently to 65 MPH.
Unrelated, but does California underpost speed limits? I tried to find the speed limit on CA 58 and CA 14 on GSV and couldn't find any signs. Had troubles on 101 as well.
Quote from: freebrickproductions on December 06, 2024, 04:47:23 PMIn Alabama, the highest non-Interstate speed limits will always be 65 MPH, and only on dual carriageways. Two-lane roads won't be any higher than 55.
All of the neighboring states (TN, FL, GA and MS) are the same way.
I think Florida has 60 on a few 2 lane roads. Was US 78 70 before it become I-22?
Quote from: Roadgeekteen on December 06, 2024, 04:50:51 PMQuote from: Max Rockatansky on December 06, 2024, 04:46:43 PM70 MPH on CA 99 south of Merced. There was also a 70 segment on US 101 south of King City which was downgraded recently to 65 MPH.
Unrelated, but does California underpost speed limits? I tried to find the speed limit on CA 58 and CA 14 on GSV and couldn't find any signs. Had troubles on 101 as well.
Caltrans is sparse on signing speed limits. That said, I think 14 is 70 MPH north of Palmdale/Lancaster in places? 58 is on the freeway segment east of California City towards Boron.
Amusingly there several mountain state highways with almost no speed limit signage. CA 245 north of Woodlake and CA 198 west of Coalinga spring to mind off the top of my head. You get one speed limit sign and that's it. You're pretty much on your own to decide if 55 MPH is something you can handle.
Minnesota caps non-Interstates at 65, which is common on outstate expressways and a few fringe suburban freeways outside 494/694.
In Wisconsin, 70 is allowed on any fully access-controlled freeway regardless of the Interstate status.
Quote from: Max Rockatansky on December 06, 2024, 04:52:31 PMQuote from: Roadgeekteen on December 06, 2024, 04:50:51 PMQuote from: Max Rockatansky on December 06, 2024, 04:46:43 PM70 MPH on CA 99 south of Merced. There was also a 70 segment on US 101 south of King City which was downgraded recently to 65 MPH.
Unrelated, but does California underpost speed limits? I tried to find the speed limit on CA 58 and CA 14 on GSV and couldn't find any signs. Had troubles on 101 as well.
Caltrans is sparse on signing speed limits. That said, I think 14 is 70 MPH north of Palmdale/Lancaster in places? 58 is on the freeway segment east of California City towards Boron.
Amusingly there several mountain state highways with almost no speed limit signage. CA 245 north of Woodlake and CA 198 west of Coalinga spring to mind off the top of my head. You get one speed limit sign and that's it. You're pretty much on your own to decide if 55 MPH is something you can handle.
It's CalTrans's practice to sign speed limits on freeways only after on ramps and otherwise when it changes. On roads without controlled access, they may do it a little more frequently, or often not bother. A lot of Sacramento county's outlying roads didn't have ANY posted speed limits and defaulted to the state default maximum.
For Colorado, 75 on E-470 and the Northwest Parkway.
Michigan, 75 mph on northern sections of freeway US routes. I don't think there are any 75's on M- freeways, so it would be 70 for those.
Both NJ & DE is 65 mph, which is the max speed limit on any roadway in either state.
Nebraska expressways and non-Interstate freeways are posted at 70mph outside of urban areas, while most two-lanes are posted at 65.
We don't have too much for non-Interstate freeway - one example is US 75 in Omaha (there are two portions north and south of the I-480 concurrency) which is posted at 60mph, until the Sarpy county line southbound when it jumps to 70mph. The West Dodge Road freeway is another.
US 95 in the entirety of its length besides the towns has a speed limit of 70 mph in Oregon. Don't know why this is, considering both US 97 and US 395 do not go higher than 65 mph in terms of their speed limits.
It was intended to match the speed limit on the Nevada section of the ION Highway. There really isn't much of a reason not to go at least 70 MPH out on the ION.
Quote from: Max Rockatansky on December 06, 2024, 07:08:21 PMIt was intended to match the speed limit on the Nevada section of the ION Highway. There really isn't much of a reason not to go at least 70 MPH out on the ION.
Yeah, besides in urban areas of course. I've driven on a lot of the ION, great road. One of the main streets of the Mountain West.
75 mph
Virginia has a single stretch of non-Interstate 70-mph speed limit on a segment of US-29, the Lynchburg–Madison Heights bypass. Other than that, no non-Interstate in Virginia is posted higher than 65.
Hghway speeds are 70 mph at multiple locations throughout the DFW Metroplex, including on Central Freeway. Realistically speaking, you'll be lucky to hit 70 on the close-in highways other than late-night hours. You won't see 75 until you get outside of the Home Counties because of EPA anti-smog attainment regulations.
Nevada:
Many two-lane highways including much of US 95 as mentioned above are posted at 70 mph.
But, the highest posted limit on a non-interstate is 75 mph on the four-lane divided portion of US 95 between I-11 at Boulder City and SR 163. Beware the drop from 75 mph to 25 mph as you pass through Searchlight, though.
NY: 65 on US 219, NY 531, NY 481, NY 49, NY 7, and the Berkshire Spur. Also NY 17, but since that's theoretically supposed to become I-86 eventually, does that really count?
VT: 65 on US 4
NH: 65 on NH 101 and the Everett
Illinois: 65 on multiple rural expressways and non-interstate freeways. IIRC a non-interstate tollway could be posted at 70 (the current state maximum for interstates), but the only non-interstate tollway at currently in existence is IL 390 in Chicagoland. Otherwise Illinois statutes caps non-interstates at 65.
Iowa: 65 on multiple rural freeways and expressways (a state that requires an interstate shield for a route to be posted at the state maximum of 70).
Missouri: 70 for parts of MO 7 between I-49 and Clinton (expressway), parts of US 54, parts of US 63, and possible a couple other routes.
Nebraska: 70 for non-interstates and rural expressways such as Highway 2 around Nebraska City and some of the US 75 freeway heading south from Omaha. IIRC another state that requires an interstate shield for a road to be posted at the state maximum (75).
Quote from: Revive 755 on December 06, 2024, 11:56:12 PMIllinois: 65 on multiple rural expressways and non-interstate freeways. IIRC a non-interstate tollway could be posted at 70 (the current state maximum for interstates), but the only non-interstate tollway at currently in existence is IL 390 in Chicagoland. Otherwise Illinois statutes caps non-interstates at 65.
Iowa: 65 on multiple rural freeways and expressways (a state that requires an interstate shield for a route to be posted at the state maximum of 70).
Missouri: 70 for parts of MO 7 between I-49 and Clinton (expressway), parts of US 54, parts of US 63, and possible a couple other routes.
Nebraska: 70 for non-interstates and rural expressways such as Highway 2 around Nebraska City and some of the US 75 freeway heading south from Omaha. IIRC another state that requires an interstate shield for a road to be posted at the state maximum (75).
You would think that Iowa would allow much of US 20 to be 70
65 mph for Indiana (SR 641, US 31- Kokomo Bypass & Plymouth to South Bend, St. Joseph Valley Parkway- US 20/31, and US 24- east of Fort Wayne)
Regarding Oregon, US 95 is 70 MPH because that was written into law. The story with 70 MPH limits in Oregon is that ODOT refused to raise anything despite the leg allowing 70, so the leg wrote into law that I-84 and US 95 must be 70. This also makes Oregon one of the few states where the highest undivided road speed limit is the highest limit found in the state. Hawaii and I think Alaska are the others.
California is relatively stingy with 70 MPH in general. That is, it needs to be rural, not mountainous, and built to modern freeway standards. Because of this, few non-Interstates qualify for consideration, and even I-80 doesn't qualify anywhere along its route. US 395 probably would if it were built to freeway standards, but a full freeway is unnecessary.
Nevada, yes, is 75, and that is the only expressway-grade road in the state with a speed limit over 70. 95 north of Vegas is the only other expressway-grade road in Nevada with a limit over 65. NV generally doesn't like posting over 65 on a surface road if there are people living anywhere nearby, so despite the state being infamous for its 70 MPH speed limits, the limit often drops to 65 or below the second you near farms or homes. Even the 80 MPH limits are relatively rare and restricted to a few straight/flat sections of 80.
Quote from: jeffandnicole on December 06, 2024, 06:09:13 PMBoth NJ & DE is 65 mph, which is the max speed limit on any roadway in either state.
In NJ I can think of Routes 24 and 55 along with most of the Garden State Parkway and Atlantic City Expressway. (When first opened back in the Sixties the speed limit on the ACE was 70 mph.)
Then, of course, there is the Turnpike south of Exit 6.
In Idaho it's 70 MPH. There's only two notable stretches of non-intestate freeway in Idaho: US-95 North of Coeur d'Alene, and US-20 East of Idaho Falls. Both freeways are 70 MPH. Even though up to 80 MPH is allowed on interstates, I don't think ITD could post above 70 on a non-interstate freeway even if they wanted to, without changing the laws first. But 70 feels reasonable enough on both freeways (when they were 65 it was a little slow).
In addition, there are a small number of 2 lane highways with 70 MPH, the ones I've driven on are US-20 from Idaho Falls to Butte City, and ID-22 from I-15 to ID-33. I don't even think ID-33 goes above 65. I think ID-28 and US-26 have some 70 but I haven't driven those stretches. All of this is in the desert area west of Idaho Falls around INL. Not sure if there is any 2 lane 70 outside of this area.
Utah's is 65 mph by state law, irrespective of freeway or divided status. Lots of 65 mph two-lane rural roads, but even a rural four-lane highway can't be any higher than that.
It's especially funny because most urban interstates are 70 mph, including all of I-15 through the Wasatch Front. So a straight, flat rural two-lane state highway in the west desert is required to be posted lower than the busiest road in the state.
Quote from: Roadgeekteen on December 06, 2024, 04:52:02 PMQuote from: freebrickproductions on December 06, 2024, 04:47:23 PMIn Alabama, the highest non-Interstate speed limits will always be 65 MPH, and only on dual carriageways. Two-lane roads won't be any higher than 55.
All of the neighboring states (TN, FL, GA and MS) are the same way.
I think Florida has 60 on a few 2 lane roads.
Yep, Florida has 60 on a good number of two lane roads. Four-lane roads can be posted at 65.
I don't see Ohio listed. It has 70-mph speed limits on various non-Interstates, including at least some portions of various rural US highways with at-grade intersections.
CT is 65, including
CT 2 between Glastonbury and Norwich
US 6 Willimantic bypass
CT 8 north of Waterbury to Winsted
CT 9 except through downtown Middletown
CT 11 entire length
CT 20 between I-91 and Bradley Airport
Quote from: freebrickproductions on December 06, 2024, 04:47:23 PMIn Alabama, the highest non-Interstate speed limits will always be 65 MPH, and only on dual carriageways.
Does this mean the 4-lane
UNdivided section of AL 79 along Guntersville Lake is no longer 65mph? It was at one point.
Quote from: Max Rockatansky on December 06, 2024, 04:52:31 PMQuote from: Roadgeekteen on December 06, 2024, 04:50:51 PMQuote from: Max Rockatansky on December 06, 2024, 04:46:43 PM70 MPH on CA 99 south of Merced. There was also a 70 segment on US 101 south of King City which was downgraded recently to 65 MPH.
Unrelated, but does California underpost speed limits? I tried to find the speed limit on CA 58 and CA 14 on GSV and couldn't find any signs. Had troubles on 101 as well.
Caltrans is sparse on signing speed limits. That said, I think 14 is 70 MPH north of Palmdale/Lancaster in places? 58 is on the freeway segment east of California City towards Boron.
Amusingly there several mountain state highways with almost no speed limit signage. CA 245 north of Woodlake and CA 198 west of Coalinga spring to mind off the top of my head. You get one speed limit sign and that's it. You're pretty much on your own to decide if 55 MPH is something you can handle.
Even Tioga Road is somehow 55 mph (which I can do, but don't really recommend).
Quote from: Voyager on December 13, 2024, 07:15:53 PMQuote from: Max Rockatansky on December 06, 2024, 04:52:31 PMQuote from: Roadgeekteen on December 06, 2024, 04:50:51 PMQuote from: Max Rockatansky on December 06, 2024, 04:46:43 PM70 MPH on CA 99 south of Merced. There was also a 70 segment on US 101 south of King City which was downgraded recently to 65 MPH.
Unrelated, but does California underpost speed limits? I tried to find the speed limit on CA 58 and CA 14 on GSV and couldn't find any signs. Had troubles on 101 as well.
Caltrans is sparse on signing speed limits. That said, I think 14 is 70 MPH north of Palmdale/Lancaster in places? 58 is on the freeway segment east of California City towards Boron.
Amusingly there several mountain state highways with almost no speed limit signage. CA 245 north of Woodlake and CA 198 west of Coalinga spring to mind off the top of my head. You get one speed limit sign and that's it. You're pretty much on your own to decide if 55 MPH is something you can handle.
Even Tioga Road is somehow 55 mph (which I can do, but don't really recommend).
Depends on the segment. The NPS has some nanny limits near major trails and observation points in Yosemite National Park. East of Tioga Pass on CA 120 I've found 3rd gear is a great way to maintain 55-60 MPH through Lee Vining Canyon.
Quote from: froggie on December 13, 2024, 07:12:39 PMQuote from: freebrickproductions on December 06, 2024, 04:47:23 PMIn Alabama, the highest non-Interstate speed limits will always be 65 MPH, and only on dual carriageways.
Does this mean the 4-lane UNdivided section of AL 79 along Guntersville Lake is no longer 65mph? It was at one point.
These are the default speed limits, not the max allowed speed limits. In the eyes of the law, ALDOT can (apparently) legally post 85+ on any of their roadways regardless of lane count, but that doesn't necessarily mean they will (or perhaps should...). AL-79 still seems to be 65 as of 11 months ago https://maps.app.goo.gl/675wqHftTDeHY7oC9
Georgia is like this with the cap, sorta. Florida is strict on where 65 can be posted: must be 4-lane divided "outside of an urban area" which caps some roadways (max allowed 60 anywhere else).
Funny enough, Florida used to be 65 on all roadways by default, with a max allowed of 70 on any roadway, before the days of the NMSL. Some older 2-lane roads still have a design speed of 65 because of this.
Quote from: ElishaGOtis on December 13, 2024, 09:54:55 PMQuote from: froggie on December 13, 2024, 07:12:39 PMQuote from: freebrickproductions on December 06, 2024, 04:47:23 PMIn Alabama, the highest non-Interstate speed limits will always be 65 MPH, and only on dual carriageways.
Does this mean the 4-lane UNdivided section of AL 79 along Guntersville Lake is no longer 65mph? It was at one point.
These are the default speed limits, not the max allowed speed limits. In the eyes of the law, ALDOT can (apparently) legally post 85+ on any of their roadways regardless of lane count, but that doesn't necessarily mean they will (or perhaps should...). AL-79 still seems to be 65 as of 11 months ago https://maps.app.goo.gl/675wqHftTDeHY7oC9
The 5-lane section of US 231 in rural south Alabama is also 65 last I checked, though the rural 5 lane section of US 72 in western Limestone County is only 60, IIRC.
Florida has 70, the same as interstates, on its toll roads such as the Florida Turnpike and SR 417, 429, and 528.
For Hawaii, it's 60mph on much of cross-island HI 200 on the Big Island. It's not even a freeway. But it's one of the state's best highways, after its recent complete rebuild.
AFAIK, none of Hawaii's Interstates is posted above 60mph, either.
There's no legal cap on Interstate speed limits in Hawaii, other than increased penalties for 80mph+. Just that Hawaii DOT thinks most of the freeways aren't engineered for high-speed travel, given high construction costs and short travel distances compared to the mainland.
In Oklahoma I've seen 80mph speed limits on the H.E. Bailey Turnpike extension going from I-44 toward Norman (but not getting all the way to I-35).
As far as I know, for Arizona it's 65 MPH. I was thinking the Loops might have 75, but I'm pretty sure they don't.
For Kentucky, 70 mph on the parkways. Same as the interstates.
Pennsylvania has 70 MPH on US 15 (future I-99) north of Williamsport, and on PA Turnpike non-Interstate routes. Otherwise, the highest limit is 65 (such as on US 222 and PA 283 outside Lancaster)
AFAIK, Alaska caps its non-Interstates at 55mph. The paper Interstates are capped at 65mph, including some of the non-freeway segments, though I'm not sure how many of the non-freeways are posted at 65mph (at least AK 3/I-A4 has 2-lane non-freeway segments posted at 65).
Legally speaking, Florida's Turnpike Enterprise is statutorily exempt from the cap on speed limits per FSS 338.239. However, administratively they are still directly subject to the cap since a) speed limits on state roads need a design variance to exceed the design speed per the speed zoning manual, b) Florida does not have a definition for what a design speed of 75+ would entail and c) because of this, it would be very risky justifying a variance without a Florida-specific reference for what a design would entail (despite our definitions literally being copy-pasted from AASHTO). As such, the highest you'll see in FL is 70.
QuoteFSS § 338.239 Traffic control on the turnpike system.—
(1) The department is authorized to adopt rules with respect to the use of the turnpike system, which rules must relate to vehicular speeds, loads and dimensions, safety devices, rules of the road, and other matters necessary to carry out the purposes of ss. 338.22-338.241. Insofar as these rules may be inconsistent with the provisions of chapter 316, the rules control. A violation of these rules must be punished pursuant to chapters 316 and 318.
They have used this authority in the past when Florida had different day/night/truck speed limits, but never to exceed 70mph.
Also legally speaking, a "limited access" super-2 in Florida could also in the eyes of the law be legally posted at 70. However, no such example exists higher than 60.
Quote from: oscar on January 26, 2025, 05:18:33 PMAFAIK, Alaska caps its non-Interstates at 55mph. The paper Interstates are capped at 65mph, including some of the non-freeway segments, though I'm not sure how many of the non-freeways are posted at 65mph (at least AK 3/I-A4 has 2-lane non-freeway segments posted at 65).
I thought I remembered that they could post 70 (but haven't), but I can't find where I found that; I did find another source that says the maximum they can post is 75 (https://dot.alaska.gov/nreg/blog/blog11.shtml) (!).
Quote from: vdeane on January 26, 2025, 09:42:59 PMQuote from: oscar on January 26, 2025, 05:18:33 PMAFAIK, Alaska caps its non-Interstates at 55mph. The paper Interstates are capped at 65mph, including some of the non-freeway segments, though I'm not sure how many of the non-freeways are posted at 65mph (at least AK 3/I-A4 has 2-lane non-freeway segments posted at 65).
I thought I remembered that they could post 70 (but haven't), but I can't find where I found that; I did find another source that says the maximum they can post is 75 (https://dot.alaska.gov/nreg/blog/blog11.shtml) (!).
This is their source that was cited https://www.akleg.gov/basis/aac.asp#13.02.275
The 75 seems to have been quoted form federal policy explaining that max allowed speed limits often vary from 55 to 75 in different states.EDIT: Here was the other source: https://dot.alaska.gov/admsvc/pnp/local/dot-jnu_123035.pdf
QuotePOLICY 05.05.020 Section C6-7
6. The maximum speed limit shall not exceed 65 MPH for any street, road, or highway with either:
a. At-grade intersections; or
b. Undivided opposing traffic lanes.
7. The maximum speed limit may be increased to, but shall not exceed, 75 MPH for a road, or highway with:
a. Controlled access;
b. Median or barrier separating opposing traffic lanes; and
c. Grade separated intersections.
Quote from: ElishaGOtis on January 26, 2025, 10:08:46 PMEDIT: Here was the other source: https://dot.alaska.gov/admsvc/pnp/local/dot-jnu_123035.pdf (https://dot.alaska.gov/admsvc/pnp/local/dot-jnu_123035.pdf)
That looks like the one I was looking for! Must have been mis-remembering 70 since a DOT only posting up to 5 mph less than what it can is more common than 10 mph.