Interstate Termini

[xotoxi]

Here are some facts about interstate termini:

The city that is the terminus of the largest number of interstate highways:
Baltimore, Maryland (3)

Cities that are the terminus for two interstate highways:
Chicago, Illinois
Cleveland, Ohio
Howard, Wisconsin
Kansas City, Missouri
New York City, New York
Port Huron, Michigan
San Diego, California
Sault Ste. Marie, Michigan
Slidell, Louisiana

List of states in order of number of interstate termini:
13   Texas
8   Illinois
8   New York
6   California
6   Michigan
6   Missouri
6   Pennsylvania
5   Arizona
5   Florida
5   Louisiana
5   Maryland
5   South Carolina
4   Tennessee
4   Wisconsin
3   Alabama
3   Georgia
3   Massachusetts
3   Vermont
3   Virginia
3   Washington
2   Idaho
2   Montana
2   Ohio
2   Oregon
2   Utah
2   West Virginia
1   Arkansas
1   Colorado
1   Connecticut
1   Indiana
1   Iowa
1   Kentucky
1   Maine
1   Minnesota
1   Nebraska
1   New Hampshire
1   New Jersey
1   New Mexico
1   North Carolina
1   North Dakota
1   Wyoming
0   Alaska
0   Delaware
0   Hawaii
0   Kansas
0   Mississippi
0   Nevada
0   Oklahoma
0   Rhode Island
0   South Dakota

[iBallasticwolf2]

I am confused, does this only count 2di Interstates or does it count 2di and 3di interstates?

[odditude]

even if it's just 2DIs, it's wrong (NJ has 2, 76 and 80).

[Brandon]

even if it's just 2DIs, it's wrong (NJ has 2, 76 and 80).

And likewise for Michigan, there's only 5, not 6 (69N, 75N, 94E, 96E&W).

[Big John]

What second Interstate ends at Sault Ste Marie?  Only I-75 ends there.

[xotoxi]

Sorry folks...something went wrong with my Excel spreadsheet and it messed up some of the numbers.

Here are the corrected ones for the states:

11   Texas
8   Illinois
8   New York
6   California
6   Michigan
6   Missouri
6   Pennsylvania
5   Arizona
5   Florida
5   Louisiana
5   Maryland
5   South Carolina
4   Tennessee
4   Wisconsin
3   Alabama
3   Georgia
3   Massachusetts
3   Ohio
3   Vermont
3   Virginia
3   Washington
2   Idaho
2   Montana
2   New Jersey
2   Oregon
2   Utah
2   West Virginia
1   Arkansas
1   Colorado
1   Connecticut
1   Indiana
1   Iowa
1   Kentucky
1   Maine
1   Minnesota
1   Nebraska
1   New Hampshire
1   New Mexico
1   North Carolina
1   North Dakota
1   Wyoming
0   Alaska
0   Delaware
0   Hawaii
0   Kansas
0   Mississippi
0   Nevada
0   Oklahoma
0   Rhode Island
0   South Dakota

[xotoxi]

This is the 2di only and it is based on the wikipedia list of 2di interstates.

You are correct about Sault Ste. Marie only being I-75 terminus.  The Wikipedia article listed I-73 going from Sault Ste Marie to Briarcliff Acres, SC...which it obviously doesn't at this time.

Oh well...

[Brandon]

This is the 2di only and it is based on the wikipedia list of 2di interstates.

You are correct about Sault Ste. Marie only being I-75 terminus.  The Wikipedia article listed I-73 going from Sault Ste Marie to Briarcliff Acres, SC...which it obviously doesn't at this time.

Oh well...

Michigan and Ohio have thoroughly rejected I-73 (and rightly so, IMHO - not everything needs an I-number).

[axolotl]

Wikipedia is wrong about I-5. San Ysidro is a neighborhood within the city limits of San Diego. It is not a separate city. The Wikipedia entry on San Ysidro correctly states this.

Thus, San Diego has three: I-5, I-8, and I-15.

[xotoxi]

This is the 2di only and it is based on the wikipedia list of 2di interstates.

You are correct about Sault Ste. Marie only being I-75 terminus.  The Wikipedia article listed I-73 going from Sault Ste Marie to Briarcliff Acres, SC...which it obviously doesn't at this time.

Oh well...

Michigan and Ohio have thoroughly rejected I-73 (and rightly so, IMHO - not everything needs an I-number).

But the interstate shield looks so cool!

[empirestate]

Wikipedia is wrong about I-5. San Ysidro is a neighborhood within the city limits of San Diego. It is not a separate city. The Wikipedia entry on San Ysidro correctly states this.

What's the error in Wikipedia? I don't see where it says San Ysidro is a separate city; in fact, the Interstate 5 article expressly states that it isn't.

[Zzonkmiles]

If this list is 2di only and South Carolina has 5 interstate termini, I'm curious to know what they are. I know there's I-20 in Florence, I-26 in Charleston and I-77 in Columbia, but what are the other two? I-85 and I-95 pass through the state. Has I-73 even been started in SC?

[oscar]

0   Alaska
0   Delaware
0   Hawaii

If you're going to be including Alaska and Hawaii (it would be appropriate to leave both states off the list altogether), Alaska has eight termini (four unsigned A-x 2dis, all beginning and ending within the state), and Hawaii has six (three signed H-x 2dis).

[Bickendan]

0   Alaska
0   Delaware
0   Hawaii

If you're going to be including Alaska and Hawaii (it would be appropriate to leave both states off the list altogether), Alaska has eight termini (four unsigned A-x 2dis, all beginning and ending within the state), and Hawaii has six (three signed H-x 2dis).

Peurto Rico should also be added with its three unsinged PR-x 2dis.

[axolotl]

Wikipedia is wrong about I-5. San Ysidro is a neighborhood within the city limits of San Diego. It is not a separate city. The Wikipedia entry on San Ysidro correctly states this.

What's the error in Wikipedia? I don't see where it says San Ysidro is a separate city; in fact, the Interstate 5 article expressly states that it isn't.
[/quote

Taking the Wikipedia list of termini for each interstate and grouping them by the literal strings for each termini gives a termini count of two for San Diego. That's because the list has San Ysidro, CA as the termini for I-5. But since San Ysidro is actually part of the city of San Diego, the city of San Diego has 3 termini, not two, as in the posters list. Based on the poster's follow up they used a spreadsheet to count instances of each literal city string, and this results in a discrepancy. So it's not so much an error in Wikipedia as not knowing the termini listed in Wikipedia may not be equivalent for purposes of comparison or counting.

[mapman1071]

Sorry folks...something went wrong with my Excel spreadsheet and it messed up some of the numbers.

Here are the corrected ones for the states:

11   Texas
8   Illinois
8   New York
6   California
6   Michigan
6   Missouri
6   Pennsylvania
5   Arizona
5   Florida
5   Louisiana
5   Maryland
5   South Carolina
4   Tennessee
4   Wisconsin
3   Alabama
3   Georgia
3   Massachusetts
3   Ohio
3   Vermont
3   Virginia
3   Washington
2   Idaho
2   Montana
2   New Jersey
2   Oregon
2   Utah
2   West Virginia
1   Arkansas
1   Colorado
1   Connecticut
1   Indiana
1   Iowa
1   Kentucky
1   Maine
1   Minnesota
1   Nebraska
1   New Hampshire
1   New Mexico
1   North Carolina
1   North Dakota
1   Wyoming
0   Alaska
0   Delaware
0   Hawaii
0   Kansas
0   Mississippi
0   Nevada
0   Oklahoma
0   Rhode Island
0   South Dakota

Arizona
I-8 Casa Grande @ I-10 & I-17 Phoenix @ I-10 and Flagstaff @ I-40
that's 3
what are the other 2?

[halork]

Sorry folks...something went wrong with my Excel spreadsheet and it messed up some of the numbers.

Here are the corrected ones for the states:

11   Texas
8   Illinois
8   New York
6   California
6   Michigan
6   Missouri
6   Pennsylvania
5   Arizona
5   Florida
5   Louisiana
5   Maryland
5   South Carolina
4   Tennessee
4   Wisconsin
3   Alabama
3   Georgia
3   Massachusetts
3   Ohio
3   Vermont
3   Virginia
3   Washington
2   Idaho
2   Montana
2   New Jersey
2   Oregon
2   Utah
2   West Virginia
1   Arkansas
1   Colorado
1   Connecticut
1   Indiana
1   Iowa
1   Kentucky
1   Maine
1   Minnesota
1   Nebraska
1   New Hampshire
1   New Mexico
1   North Carolina
1   North Dakota
1   Wyoming
0   Alaska
0   Delaware
0   Hawaii
0   Kansas
0   Mississippi
0   Nevada
0   Oklahoma
0   Rhode Island
0   South Dakota

Arizona
I-8 Casa Grande @ I-10 & I-17 Phoenix @ I-10 and Flagstaff @ I-40
that's 3
what are the other 2?

I-19 Tucson and I-19 Nogales.

[tidecat]

I-65 ends in Mobile, Alabama; eventually I-22 will end in Birmingham, Alabama.

[empirestate]

Wikipedia is wrong about I-5. San Ysidro is a neighborhood within the city limits of San Diego. It is not a separate city. The Wikipedia entry on San Ysidro correctly states this.

What's the error in Wikipedia? I don't see where it says San Ysidro is a separate city; in fact, the Interstate 5 article expressly states that it isn't.

Taking the Wikipedia list of termini for each interstate and grouping them by the literal strings for each termini gives a termini count of two for San Diego. That's because the list has San Ysidro, CA as the termini for I-5. But since San Ysidro is actually part of the city of San Diego, the city of San Diego has 3 termini, not two, as in the posters list. Based on the poster's follow up they used a spreadsheet to count instances of each literal city string, and this results in a discrepancy. So it's not so much an error in Wikipedia as not knowing the termini listed in Wikipedia may not be equivalent for purposes of comparison or counting.

Agreed; the error is in the interpretation of the data, not the data itself.

[bdmoss88]

I-65 ends in Mobile, Alabama; eventually I-22 will end in Birmingham, Alabama.

And I-85 ends in Montgomery.

[The Nature Boy]

North Carolina should have 3: I-40, I-74 and I-73.

[SSOWorld]

NYC has only one terminus of a 2D interstate.  I-80 ends at the NJ Turnpike.

[akotchi]

NYC has only one terminus of a 2D interstate.  I-80 ends at the NJ Turnpike.

I-78 ends on the Manhattan side of the Holland Tunnel; I-87 ends at I-278.  Those are the two.

[Kacie Jane]

North Carolina should have 3: I-40, I-74 and I-73.

It would be five then, wouldn't it? 74 and 73 each have both their termini in North Carolina.  (Technically, I think 74 has more than two termini, but I think only one pair should count.  But those two should count as separate from the 74 in Iowa to Ohio.)

[JCinSummerfield]

The corrected data still shows Michigan with 6 termini, when it should only be 5.