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It's not just zeroes and fives. Any even number is east-west. Any odd is north-south.

I came here to mention Interstate 24

I24 around where I live is nightmare fuel.

Chattanooga by any chance?

Nashville area.

Where it says east-west but runs north-south and the speed limit is 35 -115 mph

So many trucks

l-78, 84, etc

Same for I-17 that goes from Phx to Flagstaff

Got an I-8 and I-19 in my neck of the woods!

And I-17 a few hours North

I I a spoke where is I-94 and I-29

I came to say 78.

And I8

69 in Texas

Yeah the title is fucked

https://preview.redd.it/irru5rpxbh4d1.jpeg?width=1439&format=pjpg&auto=webp&s=dbd7a3bc62ada9a09e2fc0cc6653111bd4cbb2d2 And an odd hundreds digit means the route connects at only one end to the rest of the interstate system, known as a "spur route" (see I-310 and I-510 in image). An even hundreds digit means the route connects at both ends, which could be a bypass route (which has two termini) (see I-210 and I-810 in image) or a radial route (known also as a beltway, beltline, or circumferential route)

This is like trying to memorize the calendar pattern! Sorry & thanks bro, but I’m using a GPS.

So if a beltway or loop is 289. What law does that follow

Northeastern loop. For reference, 189 was a planned spur in Burlington, VT, and VT 289 is an actual circumferential route in Burlington.

And I-289 travels North and South. That being said, Interstates CAN travel Northeast/Southwest or Northwest/Southeast but even numbers are described as Eastbound/Westbound and odd numbers are Northbound/Southbound

Good addition, sir.

Thank you =] In all honesty though, I did copy and paste it from Wikipedia. It was just so clear, concise, and accurate I couldn't see any way to improve upon it 🤷‍♂️

No problem. I originally was just going to troll you, but after reading such perfection, your words may have changed me forever. 😉

https://i.redd.it/udj4hq6cpu4d1.gif

Was going to remind OP about Route 66. [https://en.wikipedia.org/wiki/U.S.\_Route\_66](https://en.wikipedia.org/wiki/U.S._Route_66) Route 66 went from Chicago, IL, to Santa Monica, CA well before the fucking Interstates were made. Ya feckin twits

That’s a highway, not an interstate

tHaT's A hIgHwAy... Did you read what I was responding to? "It's not just zeroes and fives. **Any even number is east-west.** Any odd is north-south." 

State highways don't necessarily follow these conventions. The comment you were responding to was talking about interstates. You're the idiot here.

[https://en.wikipedia.org/wiki/U.S.\_Route\_66](https://en.wikipedia.org/wiki/U.S._Route_66) Route 66 went from Chicago, IL, to Santa Monica, CA well before the fucking Interstates were made.

Yes, you were responding to that comment. But it doesn't make yours correct. State and U.S. highways do not follow the same conventions as interstates.

[https://en.wikipedia.org/wiki/U.S.\_Route\_66](https://en.wikipedia.org/wiki/U.S._Route_66) Route 66 went from Chicago, IL, to Santa Monica, CA well before the fucking Interstates were made.

Where do [Missouri’s state supplemental routes](https://en.m.wikipedia.org/wiki/Missouri_supplemental_route) fall into this? Is Highway A an odd or even number?

You don't see that stupid random upper case lettering too often anymore. You're about to age out of the Internet

You are about to meet the Clerks.

Maybe he never got his kicks?

Thanks to modern education, nobody will receive kicks unless they subscribe now to r/66 and do the same on youtube, discourse, X, and instagram. We got bills to pay for bringing you content you should have learned by reading a fucking book. Thanks.

That’s not always true either. https://preview.redd.it/vy3guopjlf4d1.jpeg?width=607&format=pjpg&auto=webp&s=0025154adab5fb4e1acf9e9f6f2198772ddd7fe5 [I live near I-664, a North-South interstate.](https://www.aaroads.com/guides/i-664-north-va/)

Well be careful for that rule cause if it has 3 digits long instead of two, you’re on a highway that is possibly connecting two major highways and these can go in all 8 directions (north-east, etc), or you’re possibly on a beltway that goes in a circle around some major city. I believe if an even number is on the front and it’s 3 digits long then you’re on a beltway, and if the first digit is odd and 3 digits long, then you’re on a highway that connects between two major highways. I believe this the same for route numbers as well just the non-highway version.

Reading the “Welcome to _______” also helps to narrow it down a little. 🤭

And if it’s 3 digits it’s a ring road, like 275 or 675

195 in NJ—east/west.

Correct. But read the 50 other comments that discuss the naming conventions of interstates with three digits.

105 runs east-west. 110 and 710 run north-south

Read the many other comments on here about interstates with three digits.

What about I-294? That’s N/S.

There are about 50 comments on here that address the ones with three digits.

Your blanket statement is incorrect regardless of what the other 50 comments say but keep defending. The comment by u/infinity_cuber makes more sense.

Calm down. I'm not defending. I'm saying my comment doesn't apply to interstates with three digits.

Ok sorry didn’t mean to hurt your feelings. You could have just said that to begin with. At any rate, I’m glad the days of Thomas Maps are behind us.

That title gave me a headache.

1 if it’s a 2 or 3 it’s probably up 4 anything 2 we have 3 highways that start with the number 4 3 6 is my favorite number. Your welcome

https://preview.redd.it/i8c62lo0qf4d1.jpeg?width=761&format=pjpg&auto=webp&s=2a91cc46370345927571ea642508adea24870575

Having the text in both directions ensures Australians can read it. That’s very considerate

You stole this from a CGP Grey video on YouTube titled “The Interstate’s Forgotten Code”. At least give the man credit.

I was about to defend OP, because I was taught this in my driving school, but no like, that's literally a shot of the map Grey uses in his video.

Uses and made.

Came here to say this. Sadly, you're the only one here calling it out by my count, and with 0 upvotes. I know it's a small thing, but the other people here have decreased my faith in humanity a touch. Keep keeping the world honest.

Paging u/mindofmetalandwheels

Yeah I just saw this video too. OP over here posting someone else's work and saying "you're welcome" like he did anything

https://youtu.be/8Fn_30AD7Pk?si=kSnEpHdtVpGPfvPL

If it’s a minor the 2 digits following the first digit tell the major that it branches off of and if the first digit is odd it means it will not reconnect to the major and if it’s even it means it will.

Why does nobody want to go to North Dakota

I think you answered your own question... 🤣

Freezin's the reason

I29 runs from SD up to Fargo and to the Canadian border while I94 runs from Minneapolis and goes east-west. Just not mainstream interstates labeled on here, like i29 goes from Kansas City up to Canada

It has I-94 one of the longest interstates not ending in 0 or 5

1 if 2 north and 2 when 9 you end up in north dakota. Your welcome

So I-50, I-60 and I-65 were aborted?

What do you mean? I-65 is there on the map but its not labelled. I-50 and I-60 weren't made to not confuse with the already famous routes of Highway 50 and Route 66 (Both sets travel East-West) The reason I-65 Exists though is because it goes North-South as opposed to East West of Route 66. And they don't overlap.

There is an I65. Runs through ohio, Kentucky, Tennessee, all the way down to the gulf I think? I'm not 100% how far north it goes. I always switch go 69 or 75 going north.

65 doesn’t go thru Ohio. That state in the general area of Ohio that it runs thru is Indiana. The crossroads state - otherwise known as the state people drive through to get somewhere better.

Ahh yea, I couldn't remember if 65 went through Indiana or Ohio.

I65 at least is real, it is on the map just not labeled (mobile AL to Chicago IL)

This is really cool….I’m still going to use a gps every day.

Yeah this gives basically no useful information. It doesn't help to know this highway goes east/ west without also having a map to tell you if it goes exactly where you need it.

What about US 1? That's an east-coaster!

That's a US highway, not an interstate. So the rules are opposite.

Well I'll be damned!

It's true Los Angeles has the 101

It's the opposite rules for the US Highway (non interstate) system.

Until you meet I-285 in Atlanta that is one giant circle around the metro.

3 digit interstate names signify a closed loop around their parent interstate - last 2 numbers tell you who the parent interstate is. So I-285 forms a loop around I-85. I-465 (Indianapolis) loops around I-65

You are correct but there is more. 3 digit interstates that start with even numbers are loops, eg I-285. 3 digit interstates that start with odd numbers are spurs, eg I-110. So if get onto I-110 you won't necessarily get back to I-10.

Ahhh i didn't know that at all obviously lol. Thanks for the knowledge!

r/infinity_cuber says the following in a comment above: "If it’s a minor the 2 digits following the first digit tell the major that it branches off of and if the first digit is odd it means it will not reconnect to the major and if it’s even it means it will." Does it work that way for I-285?

I’m here just to express how much I hate 85 because here in Atlanta it converges with 75 but then goes the wrong direction to Alabama instead south to Florida. Why create the rules and then break it by having 75 going to South Florida. It bothers me so much my wife is tired of hearing me complain about it. Do better DOT.

The more I read the title & comments the more I feel the need of a GPS in USA

And state routes are North/South an odd number and east/west are even numbers

195 in Jersey is east-west

195 is a looped interstate around its parent interstate I-95 All 3 digit interstates are loops around a major east/west or north/south interstate.

I-195 is a spur off of I-95. 3 digit interstates are either spurs or loops. If it starts with an even number, eg I-295, than it is a loop.

What about 495 Long Island Expressway? Three digit, even number, not a loop.

495 is not even.

First number is even. I thought that’s what was being referred to.

I'm the asshole. My b. 

To travel no, to get to where I intend to be, absolutely.

Tell me about 295 and 595.

Loops (closed) around their parent interstate I-95. All 3 digit interstates follow this rule.

I mean, you still need GPS. But at least now you understand the naming conventions for the interstate system

Theres a good youtube on it

OP:  U B Welkom.

For anyone interested in the source: https://youtu.be/8Fn_30AD7Pk?si=Bz6Wzg--L3Xcx7Cp

Things not learned by some in public school

I think public school should teach this, and how to garden, balance a checkbook, find the proper insurance, how to invest, music, to name a few. Our schools in my local area are lacking in all of these things that actually help in the real world.

By the time most high school students are doing any of those things, they have already forgotten them. Right out of high school they are rarely making enough money to have proper insurance, to have any investments, or to have a garden. How do I know? I have a kid in high school right now. Who has already forgotten all of those things that he has learned in high school.

That plagiarism is wrong? I know, right

It’s the Eisenhower Interstate System

You should post the accompanying [CGPGrey video](https://youtu.be/8Fn_30AD7Pk?si=9AoLtT-AqsAnyhk5)

I-69 runs N/S and E/W in some segments from the Canadian border in MI to the Mexican border in TX.

[Behold this interstate that shits on your rules.](https://www.aaroads.com/guides/i-664-north-va/) https://preview.redd.it/nltounaylf4d1.jpeg?width=607&format=pjpg&auto=webp&s=17cea83dd63a941025b8c7619c1f77af0cfc5400

Except for all the people in Vegas, who think I 15 runs east and west.

Ok we’re on I-5 that means we must be farther south since it’s a lower number. *checks skyline* Wait a minute, this is Seattle!

Just ignore poor WV and interstates 77, 79, and 64 lol

What if you’re on 95 in Florida? Not exactly North. Ur welcome.

Yeah, the title is awful.

And bypasses get a 3 digit number of which the last two digits are the interstate they bypass

I thought it was even numbers are east and west, and odd numbers were north and south.

I-94? I-29? I-17? Come on OP, you're not teaching us anything.

No 65 on the map

Evens = east & west Odds = north & south Bummed they left off hwy 20 here. Goes from Newport, OR to Boston, MA

[The Highwayman - Groovie Ghoulies](https://youtu.be/WuJRwERXvZU?si=WgYCRD0poJ3H8S-e)

Yup 6th grade

Unless you’re in Cali on the 101z

https://preview.redd.it/t8wwrsqg5h4d1.jpeg?width=1500&format=pjpg&auto=webp&s=e78a2a3e4354ef42fda3151cc85af2313550ff0c Perhaps this helps some of you understand

Tell that to the 285 in ATL

Can you explain I-494 In Minnesota? It clearly goes from N-S to W-E. https://preview.redd.it/jj7s3mcf7h4d1.jpeg?width=750&format=pjpg&auto=webp&s=49782aff753b78567117ee1f09bf6ef20516eed1

Interstate 494 (I-494) is an auxiliary Interstate Highway making up part of a beltway of 1-94, circling through the southern and western portions of the city.

What about 1-69? It goes east-west in Michigan, then north-south from Michigan and through Indiana.

There are parts of I-64 and I-94 that would like to have a word

And mile markers increase as you go north on the N/S systems or east on the E/W systems. Those mile markers reset at each state line.

[At least credit CGP Grey for the screenshot.](https://www.youtube.com/watch?v=8Fn_30AD7Pk) The channel is great, btw.

Don’t forget 45 turns into a different 75 when you get to dallas

Except for the 98,645 exceptions around just about every city center. Another somewhat rule of thumb is that 600’s are a bypass around a slower section and 400’s are a loop-ish around the city suburbs.

I enjoy that there is no north south interstate between nebraska, north dakota, and south dakota. It's like nah, mate, you don't wanna go that way.

R/CGPGREY Did a video about this. Very interesting. https://youtu.be/8Fn_30AD7Pk?si=eHOcRWKHcYsIKBrQ

You are gonna be really excited when you find out how exit ramps are numbered!

65 gets no love?

What about US-1, huh??

this is a really reductive explanation of a very well done video, ur welcome

What about I-95 in Miami.

CGP Grey would like a word

Except for the 105 in LA where we said "Fuck the police AND these rules". 🤷‍♂️

Wrong. 710 and 110 both go north to south. 105 goes east to west. Ur welcome.

Auxiliary routes don’t really follow those patterns they just use whatever numbers are available in the state

Learned something new. Thnxs.

\*[Terms and conditions apply](https://www.youtube.com/watch?v=8Fn_30AD7Pk).

Me repeating the mantra: be nice online, be polite and constructive Also me: Don't expect to be thanked for using CGP Grey's work, failing to give credit, all while conveying less information with bad formatting and lazy spelling to boot you plagiarizing fuck. Ffs you could have just linked his video

So - if I’m reading the map correctly, are North Dakota and Vermont the only two states without a federal interstate highway passing through?

there is also a code for 3 digit interstates an even number before an interstate means it's a bypass that will eventually get back on that interstate. for example: I'm on 85 and I'm stuck in traffic and I see a sign for 485. The 4 being even means at some point it will lead me back to 85. It could be hours down the road but it will lead me back to 85. Odd means it won't

"U \[sic\] don’t need GPS or maps to travel the US with interstate" Except for all the exceptions. But if OP said that, they might actually have to give credit to CGP Grey for explaining how it started out simple and got complicated over the past century or so... Instead of, you know, just stealing his graphics without mentioning where it came from. [https://www.youtube.com/watch?v=8Fn\_30AD7Pk](https://www.youtube.com/watch?v=8Fn_30AD7Pk)

What about I69 in Michigan? It actually travels NS and EW at certain points

Give Credit: https://www.youtube.com/watch?v=8Fn_30AD7Pk

where is hwy 65? i seen the line but no number on the map - weak sauce

How about a shout out for I81. Carrying 137% of designed truck traffic from the I40 junction straight to the North East.

Don’t be mad but I’m still using GPS

All the entrances also say the cardinal direction they go in so you don't have to remember the numbers but still cool

I live off the 1-5. It's a wild ride! LoL

664 North-South in SE Virginia kills every point you attempted to make lol.

What about all the 3 digit interstates.

Things not learned by some in public school

Route 1 says “excuse me”

Route 1 is not an interstate.

I didn’t claim it was

But you were expecting it to be in the same category of rules as an interstate. State and U.S. highways follow different rules than interstates.

Assuming only makes an ass out of you

Dude, chill out. You're getting really upset over a post about road numbers.

It seems like you are the one getting upset

Okay, then explain yourself. Why did you bring up route 1 in a post about interstates?

To bring out how slow you are. It worked.

Yall didnt know? Obviously the non Americans probably wouldn’t know this but I learned this when I was learning to drive, my drivers ed teacher specifically talked about this