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National Boards => General Highway Talk => Topic started by: xotoxi on May 21, 2015, 03:46:56 PM

Title: Interstate Termini
Post by: xotoxi on May 21, 2015, 03:46:56 PM
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
Title: Re: Interstate Termini
Post by: iBallasticwolf2 on May 21, 2015, 03:52:19 PM
I am confused, does this only count 2di Interstates or does it count 2di and 3di interstates?
Title: Re: Interstate Termini
Post by: odditude on May 21, 2015, 03:55:19 PM
even if it's just 2DIs, it's wrong (NJ has 2, 76 and 80).
Title: Re: Interstate Termini
Post by: Brandon on May 21, 2015, 03:59:20 PM
Quote from: odditude on May 21, 2015, 03:55:19 PM
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).
Title: Re: Interstate Termini
Post by: Big John on May 21, 2015, 04:25:36 PM
What second Interstate ends at Sault Ste Marie?  Only I-75 ends there.
Title: Re: Interstate Termini
Post by: xotoxi on May 21, 2015, 04:40:50 PM
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
Title: Re: Interstate Termini
Post by: xotoxi on May 21, 2015, 04:45:01 PM
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...
Title: Re: Interstate Termini
Post by: Brandon on May 21, 2015, 05:13:39 PM
Quote from: xotoxi on May 21, 2015, 04:45:01 PM
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).
Title: Re: Interstate Termini
Post by: axolotl on May 21, 2015, 05:23:01 PM
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.
Title: Re: Interstate Termini
Post by: xotoxi on May 21, 2015, 05:27:15 PM
Quote from: Brandon on May 21, 2015, 05:13:39 PM
Quote from: xotoxi on May 21, 2015, 04:45:01 PM
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!
Title: Re: Interstate Termini
Post by: empirestate on May 21, 2015, 06:33:51 PM
Quote from: axolotl on May 21, 2015, 05:23:01 PM
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.

Title: Re: Interstate Termini
Post by: Zzonkmiles on May 21, 2015, 09:32:58 PM
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?
Title: Re: Interstate Termini
Post by: oscar on May 21, 2015, 09:49:12 PM
Quote from: xotoxi on May 21, 2015, 04:40:50 PM
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).
Title: Re: Interstate Termini
Post by: Bickendan on May 22, 2015, 12:56:00 AM
Quote from: oscar on May 21, 2015, 09:49:12 PM
Quote from: xotoxi on May 21, 2015, 04:40:50 PM
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.
Title: Re: Interstate Termini
Post by: axolotl on May 22, 2015, 03:07:24 AM
Quote from: empirestate on May 21, 2015, 06:33:51 PM
Quote from: axolotl on May 21, 2015, 05:23:01 PM
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.
Title: Re: Interstate Termini
Post by: mapman1071 on May 22, 2015, 03:16:41 AM
Quote from: xotoxi on May 21, 2015, 04:40:50 PM
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?
Title: Re: Interstate Termini
Post by: halork on May 22, 2015, 04:29:59 AM
Quote from: mapman1071 on May 22, 2015, 03:16:41 AM
Quote from: xotoxi on May 21, 2015, 04:40:50 PM
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.
Title: Re: Interstate Termini
Post by: tidecat on May 22, 2015, 06:53:21 AM
I-65 ends in Mobile, Alabama; eventually I-22 will end in Birmingham, Alabama.
Title: Re: Interstate Termini
Post by: empirestate on May 22, 2015, 08:19:36 AM
Quote from: axolotl on May 22, 2015, 03:07:24 AM
Quote from: empirestate on May 21, 2015, 06:33:51 PM
Quote from: axolotl on May 21, 2015, 05:23:01 PM
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.
Title: Re: Interstate Termini
Post by: bdmoss88 on May 22, 2015, 09:50:14 AM
Quote from: tidecat on May 22, 2015, 06:53:21 AM
I-65 ends in Mobile, Alabama; eventually I-22 will end in Birmingham, Alabama.
And I-85 ends in Montgomery.
Title: Re: Interstate Termini
Post by: The Nature Boy on May 22, 2015, 10:09:30 AM
North Carolina should have 3: I-40, I-74 and I-73.
Title: Re: Interstate Termini
Post by: SSOWorld on May 22, 2015, 06:30:37 PM
NYC has only one terminus of a 2D interstate.  I-80 ends at the NJ Turnpike.
Title: Re: Interstate Termini
Post by: akotchi on May 22, 2015, 06:36:55 PM
Quote from: SSOWorld on May 22, 2015, 06:30:37 PM
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.
Title: Re: Interstate Termini
Post by: Kacie Jane on May 22, 2015, 06:58:51 PM
Quote from: The Nature Boy on May 22, 2015, 10:09:30 AM
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.)
Title: Re: Interstate Termini
Post by: JCinSummerfield on May 25, 2015, 05:41:47 PM
The corrected data still shows Michigan with 6 termini, when it should only be 5.
Title: Re: Interstate Termini
Post by: english si on May 25, 2015, 07:30:27 PM
Here's my calculations (with working). My dealing with future interstates is ropey and that's where there's leeway (-1 for MS and TX if I-69 finished though I don't expect it to be; -2 for NC when VA and SC pull their fingers out wrt I-73, etc)

State   #   Routes Terminated
TX   14   2,2,20,27,27,30,35,37,37,44,45,45,69,69
AK   8   A1,A1,A2,A2,A3,A3,A4,A4
IL   8   24,39,41,55,57,72,88,88
NY   8   78,81,86,87,87,88,88,99
AZ   6   8,11,17,17,19,19
CA   6   5,8,10,15,40,80
HI   6   H1,H1,H2,H2,H3,H3
MO   6   29,44,49,57,64,72
PR   6   PR1,PR1,PR2,PR2,PR3,PR3
PA   6   78,79,83,84,86,99
FL   5   4,4,10,75,95
LA   5   12,12,49,55,59
MD   5   68,70,83,97,97
MI   5   69,75,94,96,96
NC   5   40,73,73,74,74
OH   4   71,74,76,77
WI   4   39,41,43,43
AL   3   22,65,85
GA   3   16,16,59
MA   3   84,90,93
SC   3   20,26,77
TN   2   24,26,81
VA   3   64,66,85
VT   3   89,91,93
WA   3   5,82,90
ID   2   86,86
MS   2   22,69
MT   2   15,94
NJ   2   76,80
OR   2   82,84
UT   2   70,84
WV   2   68,79
AR   1   30
CO   1   76
CT   1   91
DC   1   66
IN   1   65
IA   1   74
KY   1   71
ME   1   95
MN   1   35
ND   1   29
NE   1   76
NH   1   89
NM   1   25
NV   1   11
WY   1   25
DE   0   
KS   0   
OK   0   
RI   0   
SD   0   
Title: Re: Interstate Termini
Post by: Scott5114 on May 25, 2015, 07:55:28 PM
Interestingly, Oklahoma would have had 1 were this list made with the original system, but now has 0 since I-44 was extended to Wichita Falls.
Title: Re: Interstate Termini
Post by: Big John on May 25, 2015, 09:11:27 PM
IL also has I-55 end there
Title: Re: Interstate Termini
Post by: froggie on May 25, 2015, 09:32:14 PM
Si, you list "87" for Vermont which should really be 93 instead.
Title: Re: Interstate Termini
Post by: thenetwork on May 25, 2015, 10:29:19 PM
Ohio should be at 4 and not 3:

- I-71/Cleveland @ I-90

- I-74/Cincinnati @ I-75

- I-76/Lodi-Seville @ I-71

- I-77/Cleveland @ I-90

edit:  I see someone caught it earlier today.
Title: Re: Interstate Termini
Post by: jeffandnicole on May 25, 2015, 10:42:43 PM
Doesn't I-95 terminate in NJ?  Twice? :bigass:
Title: Re: Interstate Termini
Post by: english si on May 26, 2015, 04:25:15 AM
Quote from: Big John on May 25, 2015, 09:11:27 PM
IL also has I-55 end there
Quote from: froggie on May 25, 2015, 09:32:14 PM
Si, you list "87" for Vermont which should really be 93 instead.
Modified OP with these changes.
Title: Re: Interstate Termini
Post by: golden eagle on May 26, 2015, 01:16:25 PM
What about I-69 in MS? There's 69E and 69C in Texas.
Title: Re: Interstate Termini
Post by: OCGuy81 on May 26, 2015, 01:25:14 PM
Does Texas include I-69, I-69E, I-69C, and I-69W? What about the suffixed I-35 routes in DFW?
Title: Re: Interstate Termini
Post by: Avalanchez71 on May 29, 2015, 01:21:04 PM
Tennessee has three.  One poster stated two another stated four.  I show three.  I-24, I-26, and I-81.
Title: Re: Interstate Termini
Post by: dfilpus on May 29, 2015, 03:13:49 PM
VA has 4 : 64, 66, 66, 85
Title: Re: Interstate Termini
Post by: english si on May 29, 2015, 03:39:41 PM
Quote from: dfilpus on May 29, 2015, 03:13:49 PMVA has 4 : 64, 66, 66, 85
66 crosses the Potomac
Title: Re: Interstate Termini
Post by: iBallasticwolf2 on May 29, 2015, 06:09:13 PM
Quote from: english si on May 29, 2015, 03:39:41 PM
Quote from: dfilpus on May 29, 2015, 03:13:49 PMVA has 4 : 64, 66, 66, 85
66 crosses the Potomac

He means the I-66 ending at I-81
Title: Re: Interstate Termini
Post by: hbelkins on May 29, 2015, 09:08:37 PM
Quote from: iBallasticwolf2 on May 29, 2015, 06:09:13 PM
Quote from: english si on May 29, 2015, 03:39:41 PM
Quote from: dfilpus on May 29, 2015, 03:13:49 PMVA has 4 : 64, 66, 66, 85
66 crosses the Potomac

He means the I-66 ending at I-81

Then 66 should only be listed once, because it only has one terminus in Virginia. The other terminus is in DC.
Title: Re: Interstate Termini
Post by: GaryV on May 29, 2015, 10:06:24 PM
Quote from: Avalanchez71 on May 29, 2015, 01:21:04 PM
Tennessee has three.  One poster stated two another stated four.  I show three.  I-24, I-26, and I-81.

I-22?

Title: Re: Interstate Termini
Post by: iBallasticwolf2 on May 29, 2015, 11:05:00 PM
Quote from: GaryV on May 29, 2015, 10:06:24 PM
Quote from: Avalanchez71 on May 29, 2015, 01:21:04 PM
Tennessee has three.  One poster stated two another stated four.  I show three.  I-24, I-26, and I-81.

I-22?

I-22 ends in Mississippi at I-269 just south of the Tennessee border.