Largest cities without a 3-di

[OCGuy81]

What're some of the largest cities that are without a 3-di?

To make this interesting, let's look at cities that have an interstate (sorry Fresno and Bakersfield, this excludes you) but don't have any 3-dis.

I believe Phoenix is the winner here, but what are some of the other larger cities with an interstate but no 3-di?

If a 3-di serves the metro area but isn't in the city limits? It counts towards the city having a 3-di

Also, let's stick to SIGNED routes.

Lubbock? Spokane? Sacramento?

[SkyPesos]

What're some of the largest cities that are without a 3-di?

To make this interesting, let's look at cities that have an interstate (sorry Fresno and Bakersfield, this excludes you) but don't have any 3-dis.

I believe Phoenix is the winner here, but what are some of the other larger cities with an interstate but no 3-di?

Lubbock? Spokane? Sacramento?

Going down the list of metro areas, Austin seems to be the 2nd or 3rd largest, depending on if you count Sacramento's unsigned I-305.

EDIT: would be 3rd largest anyways, I forgot about Orlando.

[OCGuy81]

What're some of the largest cities that are without a 3-di?

To make this interesting, let's look at cities that have an interstate (sorry Fresno and Bakersfield, this excludes you) but don't have any 3-dis.

I believe Phoenix is the winner here, but what are some of the other larger cities with an interstate but no 3-di?

Lubbock? Spokane? Sacramento?

Going down the list of metro areas, Austin seems to be the 2nd or 3rd largest, depending on if you count Sacramento's unsigned I-305.

Let me edit my original post and we'll go with signed routes only! Good catch!

[kphoger]

Austin, TX

Population (proper) 1.03 million
Population (metro) 2.28 million

Dang, beat me to it!

[webny99]

Not a nationwide candidate, but for NY it would be Binghamton, which has I-81, I-86, and I-88, but no 3di's.

City population (2020): 47,969
Metro population (2020): 247,138

[planxtymcgillicuddy]

IDK about nationally, but I know High Point is the winner for NC, at just over 115,000 population. Even though it has a 2di that SHOULD be a 3di (looking at you, I-74)

[jlam]

Looking at CO, it is Colorado Springs. That might change in the far future, depending on CODOT's plans with CO 21 and US 24.

[NWI_Irish96]

What is the largest city to previously have a 3di but no longer have one?

Any bigger than Evansville, IN?

[OCGuy81]

I feel Madison, WI might rank up there.

3 interstate highways (39/90/94) but no 3-di

[OCGuy81]

Also, Albuquerque might be up there.

[JayhawkCO]

What is the largest city to previously have a 3di but no longer have one?

Any bigger than Evansville, IN?

Fayetteville, AR comes to mind. Used to be I-540 before it was I-49.

[MATraveler128]

Boston doesn’t have a 3di within the city limits yet every other city in the state has one, although I-495 serves as the outer beltway. There was the planned Inner Belt, I-695, but it was never built.

[OCGuy81]

Oh hold on a sec....

Does I-405 in Washington ever enter Seattle city limits?? I don't think it does.

Might put Seattle towards the top of large cities without a 3-di

[JayhawkCO]

I personally don't think we should be including "city limits" as a requirement for a 3di to serve a city. I don't want to go down a Baltimore rabbit hole, but clearly I-495 serves Boston at large and I-405 serves Seattle at large.

[OCGuy81]

I personally don't think we should be including "city limits" as a requirement for a 3di to serve a city. I don't want to go down a Baltimore rabbit hole, but clearly I-495 serves Boston at large and I-405 serves Seattle at large.

Fair enough. 405 serves the Seattle area. I'll amend my initial post once more. Thanks!!

[SkyPesos]

Yea, 3di is one of those situations where metro area works much better than city limits, as a lot of 3di (specifically beltways) are designed to bypass the city limits. Like I-270, I-255 and I-170 (as well as "state route 3dis" 364 and 370) are clearly St Louis area 3dis even though none of the 5 enter city limits.

[OCGuy81]

Orlando comes to mind too. Huge metro area, but there's no 3-dis?

[formulanone]

What is the largest city to previously have a 3di but no longer have one?

Any bigger than Evansville, IN?

Fayetteville, AR comes to mind. Used to be I-540 before it was I-49.

Chattanooga, by a nose; depending on how you count I-124.

[OCGuy81]

What is the largest city to previously have a 3di but no longer have one?

Any bigger than Evansville, IN?

Fayetteville, AR comes to mind. Used to be I-540 before it was I-49.

Chattanooga, by a nose; depending on how you count I-124.

Does 124 serve the greater Chattanooga area?

[JayhawkCO]

By Metro Area:
10) Phoenix
23) Orlando
28) Austin
53) Tucson
55) Fresno* (OP specified to ignore cities that didn't have ANY interstate)
61) Albuquerque
62) Bakersfield*
65) McAllen
69) New Haven
71) Oxnard*
76) Stockton*
77) Fort Myers
79) Colorado Springs
80) Lakeland
83) Ogden
84) Poughkeepsie
86) Provo
88) Daytona Beach
89) Madison
95) Melbourne
97) Harrisburg
98) Spokane

[SkyPesos]

65) McAllen

Some people count I-69C as a 3di. I'm not one of them, but it has been discussed in the clinching 2dis thread recently.

[OCGuy81]

65) McAllen

Some people count I-69C as a 3di. I'm not one of them, but it has been discussed in the clinching 2dis thread recently.

That's a tough one! I'd count 69E/C/W as a 2-di myself...

[JayhawkCO]

What is the largest city to previously have a 3di but no longer have one?

Any bigger than Evansville, IN?

Fayetteville, AR comes to mind. Used to be I-540 before it was I-49.

Chattanooga, by a nose; depending on how you count I-124.

Or Sacramento by more than a nose depending on how you count I-580 and if you think I-505 actually serves Sacramento (it's in the MSA technically). I-880 used to be the designation for the current stretch of I-80 on the north side of town.

[ozarkman417]

Here are a couple of similar threads relating to cities that need 3di routes:

https://www.aaroads.com/forum/index.php?topic=25621.0

https://www.aaroads.com/forum/index.php?topic=20298.0

[NWI_Irish96]

Here's a fun one if someone wants to try to figure this out?

Based on population at the time the National Interstate and Defense Highways Act was passed, what is the largest city that does not have a 3di today?