The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System, is a network of controlled-access highways that forms part of the National Highway System in the United States. Be the first to know! Most highways change mile marker numbering at state borders. Can you string a few syllables together? Buford East: 0.1 miles west of the Laramie County Line (mm 336.5) Remount Road: 3.9 miles east of the Laramie County Line (mm 340.5) Otto Road: 1.29 miles east of Otto Road Interchange (mm 347.69) Mile Marker 353: 3.7 miles west of Cheyenne (mm 353.0) Cheyenne East The latter two digits reflect whatever two-digit interstate the route connects to. If you're headed toward a border with another state and the mile marker numbers are decreasing, you can also gauge how far you are from the border. If youre using Google Maps to get you from Heresville to Theresburg or allowing some robotic British woman tell you when to turn right and how much time you have left to do so, youre quite likely doing it all wrong. Exit No. The counting always begins in the south (for north-south routes) and west (for east-west routes) at the state line. On most interstates, mile marker numbers begin at the south state line on north-south routes and increase as you travel north. :), Great point, Mrs. Power and Mrs. O'Donnell! Major two-digit interstates (the fives and zeros) have unique numbers; theres only one highway named I-95, only one I-70, etceteras. On east-west routes, the numbers begin on the western state border and increase as you travel east. Signs indicating a detour. Primary interstates are one to two digit roadways that interconnect one state to the next. They can be people, places, or special events. They connect to longer two-digit routes, and act as beltways, spurs, or connectors. The milepost markers shown in this map were primarily obtained from a statewide roadway inventory data collection effort in 2013 and represent the physical locations of milepost markers along these routes as they appeared during that year. However, routes on the other hand use up to three digits. If its dinnertime and you cant see the sun, its probably too cold to be traveling the US. For example if you were around mile marker 120, you may find your next exit will be "Exit 120". The counting always begins at the state line in the south (for north-south routes) and in the west (for east-west routes). When we want to travel down the block to see our neighbors, we'll walk, skate, or bicycle over! Mile markers (MM) are green/white information signs posted along a road to indicate the mileage from the beginning of the route and are listed as features in TEAAS. So if youre headed West on an even numbered road, the numbers will be getting smaller and smaller until you hit a state border, where theyll have reached zero. North-south routes are assigned odd numbers, with the numbers growing larger from west to east; east-west routes are assigned even numbers, with the numbers growing larger from south to north. One and two-digit interstates span multiple regions, while three-digit interstates are more local. Interstate Routes, Mile Markers & Exit Numbering, highway signs, how do highway numbers work, how do interstate numbers work, how do mile markers work, how the interstate works, how the interstate works in the united states, how to exit numbers work, interstate signs, what is a business loop, what is a business route, what is the difference between a highway and an interstate. That having been said, of course, some basic skills will come in exceptionally handy. The number of digits tells you whether an interstate connects multiple metro areas, or exists solely within a single metro area. Hi wonderopolis! The same method applies going north and south as well. This cookie is set by GDPR Cookie Consent plugin. Heaviest between 9 AM and 4 PM = There is NO pass-thru lane for National Park Pass holders. When did California start using mile markers? in addition to mileposts for whole miles, either across the entire state or in select regions of the state. NORTH-SOUTH EXAMPLES: US Highway 1 runs from Fort Kent, Maine, to Key West, Florida. Mile marker numbering begins at the most southerly or westerly point in a state. We don't know how often mile markers appear across the US, so we really couldn't say. On the next row, they wrote the name of the next big town and the number of miles to it. Thought we'd have no problem with road side assistance determining our location. Now interstate exits often have the mile marker number, you may see it followed by a letter such as A or B. Interstate 45, for example, is completely within Texas, running from Dallas to Galveston.). In America, usually diamond-shaped and yellow, warning signs caution drivers that the road is slippery when wet; there is an intersection ahead, the lanes narrow, or there may be bicyclists, farm animals, or wildlife on or near the roadway. Headed North on I-77? They're called milestones. In the photo, it's CA Hwy 1. Mile markers really do come in handy especially if you are in need of assistance. Save my name, email, and website in this browser for the next time I comment. All mm(mile marker) numbers start in the West and the South. Exit now and try our delicious food today! Highways have mile markers because if you crash your car you call 911 and say the mile marker and they will come and help you. 6. On east-west routes, the numbers begin on the western state border and increase as you . 1 Why do mile markers go from west to east? Odd numbers run north and south; even numbers run east and west. The rest of the system flows from this most basic starting point. In fact, you usually cant get very far at all without it. Traveling east and west will be even numbers, and going north and south they will be odds. Thank you and have a nice day All text, and images marked as created by the article's author, are licensed under a Creative Commons Attribution-NonCommercial 4.0 International license. Fact. As from above, routes and interstates are laid out in a grid network fashion. A transcontinental permanent fixture on Mother Nature, spanning the New World, whereby travelling salesmen, anti-prohibitionist entrepreneurs and wanderlusting dads dragging their families along alike could roam from state to state with nothing between them and the open road but the wind through their toupees. Why do mile markers go from west to east? He has a degree in urban planning from the University of Coloradoand lives in Trinidad, DC. Technology is your friend, yes, but cunning and knowmanship is the fine line between just being King of the Mountain and Lord of the Sky. In this way, mile markers can help you keep track of where you are and how far away you are from certain exits. Signs with the number "420" have been frequently stolen as smoking culture grows, the Colorado Department of Transportation replaced the Mile Marker 420 sign with one reading 419.99 in an attempt . RoadsBy Dan Malouff (Editorial Board) September 12, 201973. Look for them at the side of the road, sometimes at the end of a guard rail. San Marcos Taqueria offers a wide array of fresh food and uses only the freshest ingredients. Wonder Whats Next? What is the distance between mile markers? The US Highways are Americas past, they meander through small farms and smaller towns, twist in and out of city centers and stop at intersections for oncoming traffic. The farther N. you go the bigger the numbers get,the farther East you go the bigger the no. For example, when you see a sign that reads JRs Cheap Tobacco, Exit 59 that can clue you in to how far you have to go until you get there. But the smaller two-digiters can repeat as long as theyre far apart from each other. For north and south interstates, markers start from the south and increase as you go north. The definition of a detour is a route that is different from the ordinary, often used when the direct route cannot be used. Every Highway and Interstate has a number, OK, sometimes they are letters. Interstate 95 traverses the east coast from the Canadian border near Houlton, Maine, to Florida's southern tip in Miami. Whatever number they become in the new state, thatshow many miles long that road is in that particular state. So where US 201, 301, 401, etc. The last two numbers indicate the parent route, and the first digit signifies the road's function (i.e., an odd digit for a spur running directly to a city; an even digit for a road that loops around a metropolitan area). If its after lunch, wherever the Sun is, thats West. Know your meals: If its breakfast, the suns in the East. If you continue to use this site we will assume that you are happy with it. Skip to Footer with Contact and Privacy Links. We're so excited your classes are WONDERing with us today! Hi, Ma,ekaih! This was the spot that inspired me to go ahead and compile the list. Similarly, where I-95 runs seriously through the heart of Jacksonville, Florida, I-295 does a wide loop around the city to help travelers headed further south avoid city traffic. EAST-WEST EXAMPLES: US Highway 14 runs from Chicago, Illinois to Yellowstone National Park in Wyoming. Take some time to leave us a comment or post on the Wonderopolis. These cookies ensure basic functionalities and security features of the website, anonymously. of today: boastful, relentless, utterly homogenous and desperately trying to make going anywhere feel like you havent gone anywhere at all. Go for a drive on the highway with an adult. The Sun. If you need to see the mile marker, look to the exit number near where you are trying to go. Want to add a little wonder to your website? Now, back to how these little green signs can help you in an emergency. There actually is a rhyme and a reason to the numbering system used for U.S. highways, although the rhymes and reasons vary for different types of roads. 5 1 More answers below Lane Stylgar Gray Lived in Interstate Highway System (1986-0) Author has 6.6K answers and 5.2M answer views 4 y In theory I-238 could have gotten an I-x80 number, but California being California all the available options one through nine were already assigned to other highways. These "mile markers" show the number of miles from where the Interstate route entered the state in which you are traveling. Necessary cookies are absolutely essential for the website to function properly. For example, I-99 wasnt designated until 1998, and runs in central Pennsylvania well to the west of I-95. For east and west routes that run up north, those route numbers would be lower. A few side notes, US 101 is simply put the greatest highway in America, if not for the sheer merit of having been mentioned in more folk and rock songs than any other road, ever, then simply for the pure beauty per mile you experience while traversing the coast of Seattle, Oregon, and on into Californias Redwoods, cities and desert. This can be used to reassure travellers that the proper path is being followed, and to indicate either distance travelled or the remaining distance to a destination. Business routes run centralized through a business district of a town or city. 348. Marylands I-270 is a particular troublemaker: Why should a spur connecting to I-70 at only one location get an even first digit instead of an odd? When it sets, thats West. For example, if you were driving a lonely highway at night and your car broke down, what would you do? What are these things? U.S. Route 1 (US 1) is a major north-south U.S. Highway that serves the East Coast of the United States. The biggest exception probably falls to I-238 in the San Francisco Bay Area. He's on Instagram. On most interstates, mile marker numbers begin at the south state line on north-south routes and increase as you travel north. Eastbound travelers read up the page; westbound travelers read down the page. The number of the highway youre on tells you where on the landscape of America you are. Reading the Numbers. What is the highest exit number? Thanks for asking a curious question! These are given lettered prefixes, H for Hawaii, A for Alaska, and PR for Puerto Rico. So, mile marker numbers always get larger as you . Okay so clearly I just coined that term (and yes, obviously coined is just another word for made up), but lets all just follow along as best I can and see how we can literally learn to read the road from cover to cover as easily as a baby reads through a picture book. Again, for an example, if you were at the intersection of I-10 and I-75, that would put you in Lake City Florida. Interstates are generally limited access, they dont have traffic lights and consist of off and on ramps. They say Mile at the top and display a number. On most interstates, mile marker numbers begin at the south state line on north-south routes and increase as you travel north. Keep in mind that for reasons of practicality, highways swerve and sway to avoid downtown traffic, connect to nearby routes and generally avoid plunging off of cliff sides, but big picture thinking here, this rule holds true. New York: Penguin Books, 1989 (pp. Dan Malouff is a transportation planner for Arlington and an adjunct professorat George Washington University. Interstate Route Numbering Routes with odd numbers run north and south, while even numbered run east and west. -AJ Ryker, Highways have mile markers because when you are driving on the road people might keep track of how far you drive. Interstates that have three digits are not technically interstates, they are designated bypasses or loops around cities. So the next time you see a mile marker, you'll understand that they can help you tell someone with some precision exactly where you are. Why is I-95 named I-95? So why do mile markers I-90 in NY go down as you drive east? With US Highways and the Interstate, they come with clear rules. The numbers indicate the mile it marks. It means either SCHOOL ZONE or SCHOOL CROSSING. Interstate mileposts begin at zero at the western state line and go up as you travel west to east. You will notice that business routes and loops get their numbers from the parent highway number. What memories mark those special times? Why do we have a line that divides East from West? 13 November 2001 (p. B2). As with most things, there are definitely exceptions to the rule! Billboards are the fart smear on the Marilyn Monroes face of America. Play roadway math! Interstate standards require that they be measured from zero at the state line and run to the next state linewest to east and south to north. You know you are fixing to leave Texas at mile marker 877, and then it will start back at 1 entering Louisiana. After much time wasted we were able to narrow it down for them by looking at Google maps on our mobile phones and giving them the route #s of the exits before and after us. For the most part, states follow the Interstate and U.S. Highway patterns of assigning odd numbers to north-south routes and even numbers to east-west routes, but as always there are exceptions. Hawaii's interstate highways are somewhat different than other interstates in that they are identified with numbers preceded by the letter H< rather than the standard I, however. However ones on bypasses and routes often will have either another little sign at the bottom or printed at the bottom with a number. Theres a logical system behind it all, and its easy to learn. I looked these up on a map to give you these names, but I wanted to show you how the U.S. grid works. TO EAST Market Street: 19B: TO WEST Market Street: 21: EAST Arsenal Road: Lancaster Harley Davidson Plant and Museum: 21A: EAST Arsenal Road: Lancaster Harley Davidson Plant and Museum: 21B: The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. Protect pedestrians and vehicles at busy intersections. Sometimes I go to the highway. You will find primary routes run in the 1s to 10s range. To view a Business Route Guide, click HERE. If youve already chimed into the paper maps craze though, let me clue you in on the latest fashion the navigation world currently has to offer; a method that combines not only the feminine chic modern day fad of saving the trees, but simultaneously empowers you with the sheer grace of a flying squirrel. Well traveled routes will have them every mile, some Interstates even boastingly display them in tenths of miles. We hope you are having fun WONDERing with us! The counting always begins at the state line in the south (for north-south routes) and in the west (for east-west routes). 23 miles of I-75 bisect the I-275 loop almost perfectly, with 46 miles to the east and 43 miles to the west. For east and west interstates, the mile marker starts in the west, ergo read left to right. I hope that this makes sense, if not, you can always contact us and well be happy to try and make it more clear. After logging in you can close it and return to this page. "Highway Numerology Muddled by Potholes in Logic." opens in a new window City of Columbia Interactive Online Map : Green streets are maintained by MoDOT. The cookie is used to store the user consent for the cookies in the category "Performance". Billboards rarely provide any information that any of the above methods do, but when youre in Apache Country, Arizona and no government official has bothered to update the road signs since CHIPS got canceled, sometimes advertising can provide as many clues as Sherlock Holmes would ever need. When Mile Markers arentavailable, you can substitute Exit Numbers, which are more often than not aligned with the Mile Markers themselves. Click the buttons below to visit the website. Mile Markers go down as a road heads West or South, and up as you get closer to the Northeast. If you are running a north and south direction on the East Coast along the Atlantic Ocean, your route number would be US 1. Rte. Example would be U.S. 20B, B would stand for Business. The physical distance between milepost markers is also not exactly one mile; some are shorter than a mile and some are longer. Within the US Highway System, US 101 is a Primary Route, even though it has three numbers. Mile number one is always in the west or the south. These cookies will be stored in your browser only with your consent. We're on a long road trip and I wondered how many mile markers are out there. It bypasses the freeways or heavy public traffic. If you know that your destination is at Exit 109 and youre at Mile Marker 159 headed West, youve got fifty miles to go. It means that a section of road is closed. Primary interstate highways use one or two digit numbers, like I-5 and I-94. The counting always begins at the state line in the south (for north-south routes) and in the west (for east-west routes). Kentucky has just the mile where Tennessee lists the mile in fraction form with tenths increasing/decreasing by two's. What other interesting math problems can you come up with? Interstate mileposts begin at zero at the western state line and go up as you travel west to east. East and west route that run across the south have higher numbers. Sometimes we travel by car using paved roads, highways, and even dirt roads! You will see this sign at roadway openings you are not to enter and when traffic is one way against you. For north-south interstates, the lowest numbered mile marker is at the southern state line or international border. Thanks for your patience. Major Interstate routes are designated by one- or two-digit numbers. In Austria only where a traffic sign so indicates. Primary routes are like US 30, US 6, I-10, and I-5. Can you make a one-time or recurring contribution today to keep us going strong? Best rates in Rock springs. A mile-marker exit number system lets drivers know how far they need to travel to reach their desired off-ramp. Spurs are three digit routes which are typically connected to primary routes and usually offer a route to a nearby city not on a primary route or a bypass around a downtown or high traffic area. Great work, Wonder Friends! It is 2460 miles across. Interstate Route Numbering. It is all part of traffic management. Interstate routes that branch off major, long-distance routes are assigned three-digit numbers. Have you checked out Wonder #822-- Do You Know Who to Call in an Emergency? North-south routes are assigned odd numbers, with the numbers growing larger from west to east; east-west routes are assigned even numbers, with the numbers growing larger from south to north. As in the Atlantic Ocean, New York City and Florida. Your first day of school? Often routes and bypasses call these markers, Milepost. . The cookies is used to store the user consent for the cookies in the category "Necessary". For north-south routes, the lowest numbers begin in the west, while the lowest numbered east-west routes are in the south. Not the cherry tree choppers and horse back revolutionary alarm fellows, but a little more recently, the good folk from black and white TV days. Below are some signs that you will find on the interstates and highways. By adding 15+ miles I-275 is not of much use as a bypass and relieves a negligible amount of through traffic from I-71, I-74, or I-75. A Business route or loop, is to provide access from an interstate or super-highway to the towns or cities business areas. Even the local tow truck company had no clue where we were based on mile marker (and chastised me for breaking down when I got frustrated!). They did this because emergency responders requested it. So, mile marker numbers always get larger as you travel east or north. Milestones are installed to provide linear referencing points along the road. In most cases, exit numbers flow with the mile marker relation. Keep up to date with current road and highway conditions. You also have the option to opt-out of these cookies. The counting always begins at the state line in the south (for north-south routes) and in the west (for east-west routes). Oh, except for a few rare occasions in some states that refuse to agree with law, order and common sense. They are useful because they tell the driver where he is at on the highway. For those of you really following along, the big exception is US Route 101, which isnt a 3 digit route, but a specially designated 2 digit route made up of three numbersconfusing, yes, but just remember: US 101 is so very incredibly special, and it runs the rim of the three most liberal states in the country; it can do what it wants. Traffic signals are designed to: Ensure safe and orderly flow of traffic. Continue the conversation about urbanism in the Washington region and support GGWashs news and advocacy when youjoin the GGWash Neighborhood! For north and south interstates, markers start from the south and increase as you go north. An example of a detour is a side road that drivers must go down when the main road is closed. It is yellow or yellow-green with black symbols. We also use third-party cookies that help us analyze and understand how you use this website. The G "25" marker is in the correct spot. Solid White Line: requires you to stay within the lane and also marks the shoulder of the roadway. Evens vs. Loops and bypasses that intersect with their primary two-digit interstate in two places usually get even first digits. Also, if you were on I-10 intersecting with I-5, that would put you in Los Angeles California. This road is riddled with exceptions. 3/West Greenwich/Coventry. Hawaiis first interstate is H1, Alaskas A1, and Puerto Ricos PR1. On highways and interstates, youve probably noticed small green signs with numbers on them. Likewise, what does this sign means? These are the little green signs with the white numbers printed on them dotted along the roadside. = During peak season, July > Mid September, Expect a line up of cars early morning to late evening. It may read I-47 Franklin go straight and 24 East Marion to the left 1 Mile. We are undergoing some spring clearing site maintenance and need to temporarily disable the commenting feature. Do you know how the Interstate works in the United States? I am sure you have driven on it, and your GPS helped get you from point A to B. It was a very frustrating and unsafe experience. Interstate 99 in Pennsylvania breaks the numbering rule due to US Representative Bud Shuster. Rte. Do mile markers go up or down? START IN THE SOUTH AND WEST. The interstate travels through the Deck Park Tunnelin the heart of Phoenix at milepost 145 and continues on to Tucson, where the milepost number hits 255. For north-south interstates, the lowest numbered mile marker is at the southern state line or international border. :) WOHOO! The login page will open in a new tab. Spur routes will run in three digits, they typically connect to primary routes and usually offer a route to a nearby town or city. Regional roads numbered under individual state and county systems. Every once in a while, you notice a little green sign with a number on it. If you ever have to call 911 on a state highway or interstate and youve paid attention to the mileposts, emergency crews will be able to find you faster. Contact. Mile markers can tell you what direction you are going. They have three digits, hence the nickname 3di for 3 digit interstate. This cookie is set by GDPR Cookie Consent plugin. For example, there are separate I-76s in Pennsylvania and Colorado, and separate I-87s in New York and North Carolina. Even-numbered Interstates run roughly west to east across the nation with the 2-digit numbering increasing from south to north. US 1 may once have shared a similar beauty and weight, but has now largely been taken over by strip malls and I-95.
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