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In North Dakota its Bismarck mostly as that's the capital and centrally located. In Montana its Butte for some reason. In Wyoming it's a toss up between Casper and Cheyenne.
Butte probably because it is the junction of I-90 and I-15.
Wyoming is an interesting case because there are few cities of any significant population beyond Cheyenne, Casper, and Laramie.
Are there any/other cities that list the number of city-proper interstate interchanges on the "entry" signs?
When entering the Greensboro, NC city limits on Interstate 40 eastbound, there is a highway sign that reads "Greensboro - Next 14 Interchanges." There is also one on the old I-85N into Greensboro (now Business 85 after the rerouting of I-85 onto the fairly new loop around the city.)
I don't know if I've seen the "exit/interchange" count signs anywhere else.
Thanks to YouTube, it looks like you can be as far south as Virginia and see at least one sign on NB I-95 for "Baltimore/New York City". Maryland only signs "New York" on NB 95 north of Baltimore.
New York first appears on a northbound mileage sign above MD 216 in Laurel, which is north of Washington but south of Baltimore. I would show it to you on Google Streetview, but there's a truck blocking the sign.
In terms of control cities, New York first appears on I-95 northbound at the southern junction of I-695, a short distance south of Baltimore.
I actually thought about control cities on the signs while traveling in South Korea. It's effectively an island (surrounded on three sides by water, and one side by the most heavily armed border in the world), and not all that large (about the size of Indiana), so I kind of figured that the signs would just list whatever city was farthest away. But that wasn't always the case. Highway 1 (the Gyeongbu Expressway) runs from Seoul in the northwest corner down to Busan in the southeast corner. When leaving Seoul heading south, the control city is Daejeon, which is about the halfway point. But when going the other way, leaving Busan heading north, the control city is Seoul.
Kind of meaningless for those traveling the interstate highway, may as well be a city that's recognizable to most that are travelling the route. Arizona's doing it right, they post the next big city enroute, regardless if its in or out of state.
I agree that New Mexico should follow what Arizona does. And using the next major city as control cities along the interstates makes more sense instead of some small town. For instance, in Albuquerque, I-25 NB/SB should be Denver/El Paso while I-40 EB/WB should be Amarillo/Flagstaff. Then I-10 WB all the way between the Texas and Arizona state lines should be Tucson, EB should be El Paso all the way.
Heading east on I-10 in Louisiana from Lafayette, the signs only say Baton Rouge and the signs for New Orleans only appear once you're in Baton Rouge. (in some other states it would have said both Baton Rouge and New Orleans). The control city really only is the next sizable city or town and not much bigger places farther away.
I don't know how far west in Louisiana the signs for Houston start appearing. In West Virginia, both Fairmont and Clarksburg are used as control cities when heading north from Charleston even though Morgantown is just past those and is by far a more prominent city. There are very few signs for Pittsburgh in West Virginia even though its not that far from the state line.
Also all the signs heading toward Maryland only say Cumberland and never Baltimore.
Location: Live:Downtown Phoenix, AZ/Work:Greater Los Angeles, CA
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Originally Posted by Tom Lennox 70
Heading east on I-10 in Louisiana from Lafayette, the signs only say Baton Rouge and the signs for New Orleans only appear once you're in Baton Rouge. (in some other states it would have said both Baton Rouge and New Orleans). The control city really only is the next sizable city or town and not much bigger places farther away.
I don't know how far west in Louisiana the signs for Houston start appearing. In West Virginia, both Fairmont and Clarksburg are used as control cities when heading north from Charleston even though Morgantown is just past those and is by far a more prominent city. There are very few signs for Pittsburgh in West Virginia even though its not that far from the state line.
Also all the signs heading toward Maryland only say Cumberland and never Baltimore.
Seems to depend by state DOT. For example, Interstate 10, here in AZ, Los Angeles becomes the control city starting at the Phoenix/Tempe city limit.
While conversely, in California, San Bernardino is the first control city for eastbound 10 starting in Downtown LA, then once you hit I-215, the control cities are Redlands/Palm Springs; then after CA 210, the control city is Indio, finally within the Indio city limits, the control cities are Blythe/Phoenix
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