Capital cities without a 3-di

[OCGuy81]

I think this is the complete list. This is for signed 3-di routes.

Olympia,WA
Salem, OR
Sacramento, CA
Phoenix, AZ
Santa Fe, NM
Bismarck, ND
Pierre, SD
Lincoln, NE
Austin, TX
Jefferson City, MO
Madison, WI
Springfield, IL
Montgomery, AL
Charleston, WV
Dover, DE
Montpelier, VT

I feel I'm missing some...

[hotdogPi]

Lincoln, NE

I-180

[1995hoo]

You forgot Juneau.

[OCGuy81]

You forgot Juneau.

Dammit!! That should've been the easiest one! 😂

[JayhawkCO]

Tallahassee
Frankfort
Helena

[OCGuy81]

Tallahassee

D'oh! 😂

[JayhawkCO]

And depending on how you count it, I-505 is technically in the Sacramento MSA.

[I-55]

And depending on how you count it, I-505 is technically in the Sacramento MSA.

Here's a good comparison: If I-440 didn't exist in Nashville (or was just a TN state route) would I-840 count for this thread?

[OCGuy81]

Interesting how 40% of state capitals aren't served by a 3-di

[OCGuy81]

Annapolis too. Left that off

[kphoger]

Interesting how 40% of state capitals aren't served by a 3-di

And yet it simultaneously makes the whole thread less interesting.   

[JayhawkCO]

And depending on how you count it, I-505 is technically in the Sacramento MSA.

Here's a good comparison: If I-440 didn't exist in Nashville (or was just a TN state route) would I-840 count for this thread?

I agree it's a valid comparison, but a loop around a central hub (Nashville) is a slightly different than a N/S bypass. I personally think it "serves" Sacramento enough.

[SP Cook]

Interesting how 40% of state capitals aren't served by a 3-di

Well, some states are very small, and some quite large states have chosen to place their capital in something other than the largest city, or in some cases in places that can hardly even be called a city. 

[OCGuy81]

Baton Rouge, LA too

48%

[OCGuy81]

Interesting how 40% of state capitals aren't served by a 3-di

And yet it simultaneously makes the whole thread less interesting.   

I thought it'd be a fun discussion. But I can never be near as interesting as you. Teach me!

[I-55]

Annapolis too. Left that off

If we counted unsigned 3dis it would count (same for I-305, I-194).

[webny99]

Interesting how 40% of state capitals aren't served by a 3-di

And yet it simultaneously makes the whole thread less interesting.   

I think it's plenty interesting, but the problem is that there's only a fixed number of capitals, so it's not bound to be a very long discussion regardless of how many do/don't have 3di's.

[kphoger]

But I can never be near as interesting as you. Teach me!

First, take a really goofy photo of yourself.  Then edit it with multiple filters and adjustments.  Then set it as your avatar on a geeky web forum.  Now you're well on your way!

[kphoger]

Interesting how 40% of state capitals aren't served by a 3-di

And yet it simultaneously makes the whole thread less interesting.   

I think it's plenty interesting, but the problem is that there's only a fixed number of capitals, so it's not bound to be a very long discussion regardless of how many do/don't have 3di's.

If we cross the 50% threshold, then it might me more interesting to ask which ones have a 3di...

[MATraveler128]

Baton Rouge, LA too

48%

Baton Rouge has I-110.

[skluth]

Tallahassee
Frankfort
Helena
Harrisburg

Harrisburg has I-283

[JayhawkCO]

Yep, my bad. Forgot about that one. Editing.

[US 89]

And depending on how you count it, I-505 is technically in the Sacramento MSA.

Sacramento also has I-305, but it's not signed

[JayhawkCO]

And depending on how you count it, I-505 is technically in the Sacramento MSA.

Sacramento also has I-305, but it's not signed

Yep. OP specifically said signed.

[1995hoo]

Augusta, Maine, doesn't have a 3di within the city limits, although I-295's northern terminus is only about five miles to the south, so maybe that might count. I'd argue that what is now I-295 (which used to be I-95) was not really built to serve Augusta per se and was more to connect the coastal communities to Portland and to the Maine Turnpike. It also bears noting that the former I-495 part of the Maine Turnpike (now I-95) already existed long before an Interstate number was slapped on it (I believe that was in 1987 because an Interstate number was required to allow for a 65-mph speed limit).