Largest US city in the lower 48 with only one road accessing it?

[Qadgop_the_Mercotan]

@Robot_Arm

Special, but not unique.

No, not unique.

I think Kentucky Bend is unique in the US, though. A bit of Kentucky that cannot be reached from any other part of Kentucky by any means without traveling thru another state.

I love geographic oddities!

[Qadgop_the_Mercotan]

@yabob

If you are taking populations of whole islands, rather than incorporated cities, perhaps you might consider Whidbey Island, connected to the rest of Washington only by route 20.

Also connected by a couple Ferries, but I’m presuming those don’t count. Population 58,000 - none of the towns on the Island are as big as Key West. It does occur to me, however, that we should then consider the entire set of Florida Keys, starting with Key Largo, rather than just Key West.

That’s why I’m looking for cities/town, etc. Otherwise it gets more complicated and we have to clarify the rules. So I exclude places like the Outer Banks and the Keewenaw Peninsula as a whole, as they are made up of many communities

[beowulff]

Well, I know that this isn’t what the OP is looking for, but I’d put money on Phoenix being the largest metro area served by the fewest highways - just 4 - 60, 10, 17, 87 - in a population of 4.5 Million.

[Qadgop_the_Mercotan]

@Civil_Guy

I just checked it out with Google Maps, wanted to make sure it corresponded with my recollections from 10 years ago when I visited. The map isn’t crystal clear, but I’m pretty sure that the only way in is from 56 street. There’s a border crossing, ya’ know - a small shack with a U.S. border guard who asked a few standard questions, then let me through. On return a couple hours later, the Canadian border guard across the median was nicer. But of course - Canadians are famous for it.

It wasn’t as interesting as I’d hoped it would be. Pretty much residential, probably vacation homes. The marina is nice and, well, a marina. Still, just sort of a curious place.

I looked at the Mapquest aerial photo, and it did look like there was some sort of official building on the NW corner, the Canadian side, at 67 street. So I wasn’t sure. But my Atlas shows the only border crossing being at 56 street.

[Scruloose]

@Qadgop_the_Mercotan

I love geographic oddities!

Then you’ll love the Northwest Angle in Minnesota. Unless you have a boat or plane, you can’t get there withoot going through Canada, eh?

[Qadgop_the_Mercotan]

@Scruloose

Then you’ll love the Northwest Angle in Minnesota. Unless you have a boat or plane, you can’t get there withoot going through Canada, eh?

See post #20.

Yeah, the angle is interesting. I saw a newspiece about the land border crossing from Canada to the angle, right after 9/11. It was considered an access point for terrorists, since it consisted of an unmanned phone booth.