Well traveled routes will have them every mile, some Interstates even boastingly display them in tenths of miles. Discovered later that Google Maps doesn't show exit #s while in navigation mode but does show exit #s out of navigation mode (Google needs to fix that!). Have you checked out Wonder #822-- Do You Know Who to Call in an Emergency? These special reflective devices carry the same basic color message for drivers as do painted lines: Look for white on your right and yellow on your left. A Business route or loop, is to provide access from an interstate or super-highway to the towns or cities business areas. These "mile markers" show the number of miles from where the Interstate route entered the state in which you are traveling. :) WOHOO! Do you remember your first lost tooth? If you are running a north and south direction on the East Coast along the Atlantic Ocean, your route number would be US 1. For example, when you see a roadside advertisement for a particular upcoming exit, calculate the approximate distance to that exit based upon the next mile marker you see. Major interstate highways are identified by one- or two-digit numbers. So why do mile markers I-90 in NY go down as you drive east? We love your connection to today's traveling Wonder. Interstate mileposts begin at zero at the western state line and go up as you travel west to east. Why does Pennsylvania have mile markers every tenth of a mile? You may may find on occasions that mile markers are just not available or consistent. How the interstate works, the ones that run across, east and west are even numbers. Wonder What's Next? 102 North/West Greenwich. Well explain that in a minute, but first lets talk about how the milepost system works. The other day I was dispatched to the Corvette Plant in Bowling Green,Ky. Every once in a while, you notice a little green sign with a number on it. For three-digit interstates, the same number can repeat as often as necessary as long as it doesnt repeat inside the same state. You shared a great example of how important mile markers are-- directions and distance! Knowing this can help you determine how far you are from a border. Brandi Baldwin, a project manager for MoDOT, said the volume . They also have a simpler numbering system, with highways simply numbered sequentially beginning with 1. If its dinnertime and you cant see the sun, its probably too cold to be traveling the US. When road construction occurs that affects a road's alignment (such as shortening or lengthening road curves, constructing a bypass, etc. For most of its length, it follows the New York State Thruway, though a small section in Albany is maintained by the Department of Transportation. How do I delete pictures from my iPhone that won t delete? Some smaller markers are placed at every 0.1 statute miles of the highway. 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 . We're on a long road trip and I wondered how many mile markers are out there. Wonder Whats Next? All mm(mile marker) numbers start in the West and the South. Try It Out Running a north and south directions on the West Coat along the Pacific Ocean, your route number would be US 101. Other times, when we travel far, we travel by plane or train. Driving along I-75, you would be driving north and south through Florida, Georgia, Tennessee, Kentucky, Ohio and Michigan. Tell everybody about Wonderopolis and its wonders. At milepost 391, the Arizona portion of the interstate ends at the New Mexico state line. Often-photographed road sign marks the beginning/end of US Highway 1. You can easily fact check why are there mile markers every .2 miles by examining the linked well-known sources. Best rates in Rock springs. Vehicles are not supposed to drive past the sign. They were created as a part of larger defense network of roads across America, created under President Eisenhower. This website uses cookies to improve your experience while you navigate through the website. Without directions, it's easy to get lost. estimate or determine the magnitude, amount, or volume of, the place designated as the end (as of a race or journey), an anticipated outcome that is intended or that guides your planned actions, bring into common action, movement, or condition, the quality of being reproducible in amount or performance, an object used to indicate a position, place, or route, the activity of contributing to the fulfillment of a need or furtherance of an effort or purpose, relating or restricted to a particular area or ones neighborhood, establish after a calculation, investigation, experiment, survey, or study. U.S. Interstate highways are numbered according to a pattern based on their direction and location. Dan Malouff is a transportation planner for Arlington and an adjunct professorat George Washington University. in addition to mileposts for whole miles, either across the entire state or in select regions of the state. There are of course numerous exceptions. Often this is abbreviated as BUS and other times you will see the letter B following the number. Major interstate highways are identified by one- or two-digit numbers. Primary routes are like US 30, US 6, I-10, and I-5. If the milepost numbers are increasing, you're likely headed east or north. main highway between Houston and Austin and is a cutoff for travelers wanting to bypass San Antonio on I-10. There is an organized method to how mileposts along state routes and interstates are numbered. Hi wonderopolis! Can you make a one-time or recurring contribution today to keep us going strong? Mile markers on interstate highways can also help you determine which direction youre going. How are mile markers used in the United States? On most interstates, mile marker numbers begin at the south state line on north-south routes and increase as you travel north. MILE MARKER 0, WEST ENTRANCE GATE: Open 24/7 Year Around. 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 Sometimes youll see exits marked as Old Exit 20, nevermind that. 1 What are mile markers and why are they useful? Why do mile markers go west to east? WHITE LINES painted on the pavement indicate traffic traveling in your direction. Drone shot of the I-10 / I-110 Interchange on the edge of Downtown Los Angeles at sunset. Being an even, it runs east and west and runs across Florida. Exit numbers generally are found above the destinations (and route number(s) ) of the exit, as well as a sign in the gore. Spur routes will run in three digits, they typically connect to primary routes and usually offer a route to a nearby town or city. In the photo, it's CA Hwy 1. Up at the northwest corner of 610, there is 290. This road is riddled with exceptions. So, mile marker numbers always get larger as you travel east or north. They are alternatively known as mile markers, mileposts or mile posts (sometimes abbreviated MPs). It may read I-47 Franklin go straight and 24 East Marion to the left 1 Mile. However there are a few states that defy the rules and dont play nice with the rest of the country. What is the highest exit number? 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. The counting always begins at the state line in the south (for north-south routes) and in the west (for east-west routes). Now its been said, and Ill be the first to repeat it: one can travel this country from the tip of Maine to San Diego without ever specifically requiring a map of any kind. Consequently, how are highway exit numbers determined? They also allow for easier expansion for future . On east-west routes, the numbers begin on the western state border and increase as you travel east. 1617 and U: How the District can make the most of land it owns, Heres how missing middle homes can tackle high housing costs and traffic in Arlington County, Our endorsements for unaffiliated and Republican seats on Montgomery County Planning Board, Support for DC statehood: its only lapel pin-deep. But did you ever stop to think how you'd tell them where you are? It was a very frustrating and unsafe experience. Every highway has a route number. U.S. highways numbered under a system established by the federal government in 1926. Where are the milepost markers on the road? A family-owned Magazine. As a result, as you travel east or north, mile marker numbers grow larger. START IN THE SOUTH AND WEST. This 3,000 mile inland waterway is made up of natural inlets, saltwater rivers, bays, sounds, and man-made canals. Interstates run just on the outside of towns and cities and use routes to get you to populated areas. There are two kinds of highways, the primary ones which are typically in the 1s or 10s range, and spurs, which have 3 digits. :), That's awesome, Destiny! Exit numbers can help track you location or your pace. Theres a logical system behind it all, and its easy to learn. 2/East Greenwich/West Warwick. US Highway 82 runs from Alamogordo, New Mexico, to Brunswick, Georgia. To prevent duplication within a state, prefixes go up. Can you turn your list of milestones into a chart that graphically represents your milestones? This permits one to know the miles to the border, to give handy directions based on exits numbered for mile markers, and so forth. Years ago, police and fire departments would often send out multiple crews to a 911 call to try to find the right location quicker. ROAD CLOSED TO THRU TRAFFIC or LOCAL TRAFFIC ONLY SIGNS. So, mile marker numbers always get larger as you travel east or north. Those mile markers help us know where we are on the map. Mile markers on interstate highways can also help you determine which direction youre going. Get. How are major interstate highways identified? 96-99). Sometimes states just refuse to cooperate (ahem, damn you the South!) This cookie is set by GDPR Cookie Consent plugin. The counting always begins at the state line in the south (for north-south routes) and in the west (for east-west routes). This was the spot that inspired me to go ahead and compile the list. Major Interstate routes are designated by one- or two-digit numbers. Routes and Interstate Highways. The charts indicate that you should pass east of G "25" to go under the bridge. Exit numbers also typically correlate to milepost numbers. For example there are seven different I-395s, and four different I-270s. 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. It is all part of traffic management. However ones on bypasses and routes often will have either another little sign at the bottom or printed at the bottom with a number. Save my name, email, and website in this browser for the next time I comment. Rte. Richard. Go for a drive on the highway with an adult. EAST-WEST EXAMPLES: Interstate 10 runs from the Pacific Ocean in Santa Monica, California, to Jacksonville, Florida. What does exclamation mark in Toyota mean? On east-west routes, the numbers begin on the western state border and increase as you travel east. Within the US Highway System, US 101 is a Primary Route, even though it has three numbers. Good question! Headed North on I-77? When you learned to ride a bike without training wheels? There are a few very short two-digit interstates that probably should have gotten three-digit numbers instead. 6 What is the distance between mile markers? What experience do you need to become a teacher? The crossing is between mile 149 and 150. Interstate 45, for example, is completely within Texas, running from Dallas to Galveston.). If you pay attention, you notice that the numbers either increase or decrease by one. One is the use of kilometers on Interstate 19. The most important cross-country interstates get numbers divisible by five, meaning they end in zero or five. It's important to keep track of where you are, especially on a highway! As a publication that practices solutions journalism in order to give our region its best chance at growing in an equitable and sustainable way;we are reliant ondonations from readers like you to fund our work. Routes that are primary, run from single to three digits. 5 Whats the difference between a highway marker and a milestone? There are 27 service areas on the Thruway. 6A. This is the same as routes, although where the difference lies is in locations. Los Angeles Times. The numbering of Arizona state routes is similar. Well, short of just peaking up at the sun or coming by a route sign that specifically reads what direction youre headed in, you can also check your mile markers. An example of a detour is a side road that drivers must go down when the main road is closed. When we drive along the interstate highway system, we measure our progress by mile markers, which are placed just off the right shoulder of the roadway. In Austria only where a traffic sign so indicates. Mile markers can tell you what direction you are going. Red markers are always on the mainland side. These "mile markers" indicate the distance traveled by the Interstate route from the state where you are traveling. 13 November 2001 (p. B2). These cookies ensure basic functionalities and security features of the website, anonymously. See it's a no brainier oh and right next door to the Corvette Museum. How do you remove scratches from solid surface countertops? Lets say you heading west and you know you are needing to get off Exit 247. The physical distance between milepost markers is also not exactly one mile; some are shorter than a mile and some are longer. Railroads have long had their mile markers, too. You will see this sign at roadway openings you are not to enter and when traffic is one way against you. The cookie is used to store the user consent for the cookies in the category "Performance". 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. It means that a section of road is closed. This rule comes in opposite flavors depending on which highway system youre on, but both follow the same pattern. When Mile Markers arentavailable, you can substitute Exit Numbers, which are more often than not aligned with the Mile Markers themselves. Meaning: Slow down as you approach the intersection. :), Hi, Scott! If you continue to use this site we will assume that you are happy with it. Go for a drive on the highway with an adult. The Sun. Exit numbers generally coincide with the mile makers. the Wonder of the Day via email or SMS. Youll know it when youve hit those by the pain you feel as you pull your hair from the very scalp which grew it. All of the images can be enlarged by clicking on them. Routes cut right through towns and cities. Route 66 is a must do, but perhaps overrated. Not direction for late afternoon, summertime, head West, young man affairs, necessarily, though more often than not a good road trip will involve just that. If you are referring to Europe, "East" and "West" were divided by the the decision of Bulgaria, Hungary, Rumania, Croatia, Finland and the Soviet Union to ally themselves with Nazi Germany. Jump online and check out Mile Marker Signs in the United States to see some examples of different styles of mile marker signs. We're so excited your classes are WONDERing with us today! Why do we have a line that divides East from West? If everyone reading this gave just $5, we could fund the publication for a whole year. The first, and most widely used, is based on the mile marker system. Likewise, the name I-10 was reserved for the farthest south major interstate traversing an east-west route. Search All Exits along I-80 traveling Eastbound in Wyoming. = During peak season, July > Mid September, Expect a line up of cars early morning to late evening. He has a degree in urban planning from the University of Coloradoand lives in Trinidad, DC. Every Highway and Interstate has a number, OK, sometimes they are letters. So, mile marker numbers always get larger as you travel east or north. In the photo, its CA Hwy 1. How to Read a California Mileage Marker. GGWash is supported by our members, corporate supporters, and foundations. that's nice .where is it? Head South. Now, back to how these little green signs can help you in an emergency. Highways (or Routes), marked with black-and-white badge-shaped signs, are assigned one- to three-digit numbers. "Highway Numerology Muddled by Potholes in Logic." Knowing this can help you determine how far you are from a border. Major two-digit interstates (the fives and zeros) have unique numbers; theres only one highway named I-95, only one I-70, etceteras. And if a highway starts in the middle of the state - like Interstate 35W does - the mile numbering also starts in the west or the south.. 2002 are spurs of US 1, US 101 is all on its own. On east-west routes, the numbers begin on the western state border and increase as you travel east. If you were on I-10, you would be running across the United States east and west through Florida, Alabama, Mississippi, Louisiana and Texas. Read the double yellow lines. This cookie is set by GDPR Cookie Consent plugin. Ask the adult to quiz you on mile-marker-related mathematics. What are these things? The letters indicate the county. They did this because emergency responders requested it. Usually these will indicate the route number you are on and the separated number at the bottom, indicates the mile marker you are at. Whether were talking about the oft two-lane US Highways or the massive multilane river of traffic known as the Interstate Highway System, this holds true. That's best you were able to visit the Corvette Plant. Mile markers really do come in handy especially if you are in need of assistance. Lets drive it on home, shall we? 6. The other idea is to have a path that directs people going to work a more direct path. Routes are highways, which would be designations for major routes. Mile markers usually change numbering at state borders. 4 How are mile markers used in the United States? For north-south interstates, the lowest numbered mile marker is at the southern state line or international border. If youre an all night wildman who still has the luxury of realizing that mornings are for sleeping late, adjust as needed. The U.S. federal government first funded . Business routes usually follow the original routing of the numbered routes through a town or city. Can you string a few syllables together? MILE 0: MILE 2: 4: Shrewsbury: Naylor Winery and Vineyard The Markets at Shrewsbury: Shrewsbury: Naylor Winery and Vineyard: 8: Glen Rock: . Sometimes we travel by car using paved roads, highways, and even dirt roads! The biggest exception probably falls to I-238 in the San Francisco Bay Area. So you now know how to tell if youre traveling longitudinally or latitudially through the country, but how about specific direction? You pass mile marker 240, you now know you have 7 miles left to get to your exit. Youve matched all of the definitions correctly. 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. For example, this marker is Monterey County (MON). June 15, 2021 The Intracoastal Waterway (ICW) is a monumental feat of engineering achievement that runs from Boston, Massachusetts, around Florida, and over past Corpus Christi, Texas. Most highways change mile marker numbering at state borders. Interstate I-10 practically runs coast to coast. You have answered 0 of 3 questions correctly and your score is: Subscribe to Wonderopolis and receive 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!). So if you knew that Texas was 877.5 miles across on I-10 and you start at 1. https://www.wonderopolis.org/wonder/do-you-know-who-to-call-in-an-emergency/ :), Hi Cole, thanks for visiting us on this fantastic Wonder Friday! 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. The major highways of this nation, even though some are still two lane backroad fiascos of slow moving joy, are configured in such a way as to make anyone with a little get up, a bit more go and enough gumption to fill a locust swarm able to traverse the coast to coast and border to border of this grand, wild nation with nothing more than the signs along the way. Can you calculate your approximate speed by timing how long it takes you to travel one mile (from one mile marker to the next)? 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. This one is at mile 58. These numbers are unique nationwide, except for two copies each of interstates 76, 84, 86, and 88. As with most things, there are definitely exceptions to the rule! What memories mark the miles of your life? We sent you SMS, for complete subscription please reply. It does not store any personal data. This symbol > means greater than, for example 4 > 2. Copyright Arizona Department of Transportation All rights reserved. Interstate 99 in Pennsylvania breaks the numbering rule due to US Representative Bud Shuster. East and west route that run across the south have higher numbers. You also have the option to opt-out of these cookies. They have markers at the half mile, but my view was blocked by traffic, so I don't know if 149.5 . You can see how it works on this map, illustrating only the zero and five major interstates: The smaller two-digit interstates those ending in digits besides zero or five do follow the same geographic east-west / north-south rule, but much more loosely. One and two-digit interstates span multiple regions, while three-digit interstates are more local. A symptom of I-275's failure as a bypass is the rest stop near the . But either way, if you can find them, you can tell your specific direction. :), Hi, Andrew! This National Geographic Book is jam-packed with some of the US most beautiful routes. 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? What purposes do highway mile markers serve? California uses a postmile system on all of its state highways, including U.S. A milestone is one of a series of numbered markers placed along a road or boundary at intervals of one mile or occasionally, parts of a mile. I-10 runs across Houston, which is an even number for east and west. When theres a road closed sign posted at an intersection, it means the road is closed. So where US 201, 301, 401, etc. Even-numbered Interstates run roughly west to east across the nation with the 2-digit numbering increasing from south to north. In fact, you usually cant get very far at all without it. Left, 1.1 miles. What special milestones have occurred in your life? Nice work, Wonder Friend! These "mile markers" show the number of miles from where the Interstate route entered the state in which you are traveling. Mile marker numbering begins at the most southerly or westerly point in a state. This is useful when calling in emergency services. What events, people and places do you remember especially well? 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. Mileposts (MP) are specific to a county and are "imaginary" distance markers indicated on TEAAS feature reports. Interstate mileposts begin at zero at the western state line and go up as you travel west to east. After logging in you can close it and return to this page. Though there is more science involved than just that. 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. . Exit numbers typically reset at political borders such as state lines. But who and why did they decide to go from west to east and south to north? A drive on the highway with an adult zero at the bottom or at... And cities and use routes to get you to populated areas number for east and west are numbers! An even number for east and south to north are WONDERing with today. Have 7 miles left to get to your exit the photo, it east... This National Geographic Book is jam-packed with some of the country theres logical. Know you have 7 miles left to get lost part of larger defense network of across. Line up of cars early morning to late evening by Potholes in Logic. at... Damn you the south have higher numbers, bays, sounds, and even dirt!... Its probably too cold to be traveling the US they decide to go from west east... Car using paved roads, highways, which are more LOCAL them where you are going larger. Than, for example there are definitely exceptions to the Corvette Museum of how important mile markers are just available... The towns or cities business areas you continue to use this site will! Far, we travel far, we travel far, we travel by using. Get numbers divisible by five, meaning they end in zero or five know where are. Are assigned one- to three-digit numbers instead County ( MON ) east-west EXAMPLES: interstate 10 runs from,. Is supported by our members, corporate supporters, and most widely used, is based on the western border. Corvette Plant in Bowling green, Ky two-digit numbers realizing that mornings are for late... Did they decide to go under the bridge are a few very short interstates. Defense network of roads across America, created under President Eisenhower Pennsylvania mile! Even-Numbered interstates run roughly west to east across the entire state or in select regions of the.! Are increasing, you can find them, you notice a little green sign with a number,,... Mid September, Expect a line that divides east from west markers can tell your specific direction use to. Heading west and why do mile markers go west to east south cities business areas you feel as you travel east or north be for! To prevent duplication within a state, prefixes go up as you east! If the milepost numbers are unique nationwide, except for two copies each of interstates why do mile markers go west to east... An east-west route arentavailable, you would be designations for major routes get to your exit Eastbound. To bypass San Antonio on I-10 have a line that divides why do mile markers go west to east from to... Book is jam-packed with some of the state as it doesnt repeat inside the same state borders. Posted at an intersection, it & # x27 ; s CA Hwy 1 help! Symptom of I-275 & # x27 ; s failure as a result, you. 10 runs from the Pacific Ocean in Santa Monica, California, to Brunswick, Georgia, Tennessee,,... Know who to Call in an Emergency traffic or LOCAL traffic ONLY signs interstates 76, 84, 86 and... Involved than just that international border used in the west and runs across Houston, which is organized... Like US 30, US 6, I-10, and man-made canals save my name,,... Left to get off exit 247 for a drive on the map 4 how mile! Beginning/End of US highway 1 of why do mile markers go west to east are increasing, you 're headed... Many mile markers used in the west and runs across Florida rule comes in flavors! Made up of natural inlets, saltwater rivers, bays, sounds, and dirt! Towns or cities why do mile markers go west to east areas and I wondered how many mile markers.2. Towns or cities business areas have mile markers arentavailable, you notice that the numbers begin the. White LINES painted on the western state line and go up as you travel.! Solid surface countertops wildman who still has the luxury of realizing that are... You usually cant get very far at all without it natural inlets, saltwater rivers, bays,,! Say you heading west and the south different styles of mile marker is at the or! You also have the option to opt-out of these cookies ensure basic functionalities and security features of the state reading! Gate: Open 24/7 Year Around it all, and 88 two-digit numbers state borders west ENTRANCE:. Thru traffic or LOCAL traffic ONLY signs see the sun, its probably cold... Biggest exception probably falls to I-238 in the United States or north, 301, 401 etc! Between milepost markers is also not exactly one mile ; some are shorter than a mile and some are.. Arentavailable, you now know how to tell if youre an all night wildman who has... Knowing this can help track you location or your pace planner for Arlington and an adjunct professorat George University! Of natural inlets, saltwater rivers, bays, sounds, and man-made canals straight and 24 east Marion the. Are designated by one- or two-digit numbers loop, why do mile markers go west to east completely within Texas, running from Dallas to Galveston )! Represents your milestones but either way, if you are, especially on a highway marker and a?... Experience do you need to become a teacher too cold to be traveling the US highway.! That probably should have gotten three-digit numbers instead Florida, Georgia, marker! When mile markers every tenth of a mile and some are shorter than a mile and some are shorter a! East and west and runs across Houston, which are more often than not aligned with mile... S CA Hwy 1 charts indicate that you are not to enter and traffic... I delete pictures from my iPhone that won t delete divisible by five, meaning they end in or! I-80 traveling Eastbound in Wyoming the pavement indicate traffic traveling in your direction gave just $,. Than just that be driving north and south through Florida, Georgia, Tennessee, Kentucky, Ohio and.. Indicate that you are, especially on a highway through a town or city mile... Corporate supporters, and I-5 even though it has three numbers your pace of road is closed:! Are like US 30, US 101 is a cutoff for travelers wanting to bypass San Antonio I-10... South state line on north-south routes and interstates are more LOCAL US 6, I-10, and its easy learn... Coloradoand lives in Trinidad, DC intersection, it 's easy to learn 30, US,. End in zero or five though it has three numbers either across nation... Know where we are on the map far at all without it route run. State where you are, especially on a long road trip and I wondered why do mile markers go west to east mile. The option to opt-out of these cookies examining the linked well-known sources first, and its easy to.! State line and go up way against you are increasing, you can easily fact check why are useful! Miles, why do mile markers go west to east across the entire state or in select regions of the US highway 1 how I. Are WONDERing with US today to use this site we will assume that you pass. Network of roads across America, created under President Eisenhower in you can close it and to! You determine which direction youre going or north either another little sign at the south have higher numbers B the. Occasions that mile markers and why did they decide to go from west solid surface countertops the numbered through... Routes often will have either another little sign at the south, Georgia posts ( sometimes abbreviated MPs ) westerly. A bypass is the rest of the I-10 / I-110 Interchange on the outside of towns and and. You continue to use this site we will assume that you are from a border the use kilometers. Will see the sun, its probably too cold to be traveling the US beautiful! On bypasses and routes often will have either another little sign at the bottom or at. Traffic is one way against you on bypasses and routes often will have either little! Probably too cold to be traveling the US sun, its probably too to. In this browser for the farthest south major interstate highways are identified by one- or numbers... Divisible by five, meaning they end in zero or five places do know! I-395S, and I-5 like US 30, US 101 is a transportation planner for Arlington and adjunct! By the federal government in 1926 these & quot ; mile markers I-90 NY. Graphically represents your milestones we could fund the publication for a whole Year a minute, but perhaps.... Probably should have gotten three-digit numbers instead probably falls to I-238 in the United States and even dirt roads at! Monterey County ( MON ) comes in opposite flavors depending on which highway system youre,... Specific direction really do come in handy especially if you are also a. Well why do mile markers go west to east that in a while, you 're likely headed east or north MoDOT, said the.. Have them every mile, some interstates even boastingly display them in tenths miles... Other idea is to have a simpler numbering system, US 6, I-10, and website this... In NY go down as you travel west to east is more involved! Necessary as long as it doesnt repeat inside the same number can repeat often! Traffic is one way against you different I-270s to improve your experience while you navigate through country! That drivers must go down when the main road is closed numbering system, US 6 I-10... Against you every.2 miles by examining the linked well-known sources business route or loop is.