Interstate-Interstate Interchanges

[CtrlAltDel]

Does anyone have, by chance, a list of all interchanges where both routes are interstates, at least for 2DI's? I was thinking about making one, but I decided against making one just to reinvent the wheel.

[SSOWorld]

Did you try Wikipedia?

[CtrlAltDel]

After searching on and off for what has apparently been an entire year, I have decided to sit down and make the list myself. So, voilà:

Code Select Expand

2 I-2 69C 69E
2 I-4 75 95
5 I-5 8 10 80 84 90
3 I-8 5 10 15
21 I-10 5 15 17 17 8 19 25 20 35 37 45 45 69 49 12 55 12 59 65 75 95
0 I-11
4 I-12 10 55 10 59
1 I-14 35
8 I-15 8 10 40 70 80 84 86 90
2 I-16 75 95
3 I-17 10 10 40
1 I-19 10
14 I-20 10 30 35W 35E 45 49 55 59 65 75 85 26 77 95
1 I-22 65
6 I-24 57 69 65 40 59 75
6 I-25 10 40 70 76 80 90
6 I-26 81 40 85 20 77 95
1 I-27 40
6 I-29 35 70 80 80 90 94
7 I-30 20 35W 35E 35E 45 49 40
18 I-35 69W 10 37 14 35E 35W 35E 35W 40 44 70 29 80 90 35E 35W 35E 35W
8 I-35E 35 20 30 30 35 35 94 35
8 I-35W 35 20 30 35 35 94 94 35
3 I-37 69E 10 35
6 I-39 55 80 88 90 43 94
21 I-40 15 17 25 27 44 35 49 30 55 69 65 24 75 81 26 77 74 73 85 87 95
4 I-41 94 43 94 43
5 I-43 39 90 41 94 41
6 I-44 40 35 49 55 64 70
5 I-45 69 10 10 20 30
5 I-49 10 20 30 40 44
15 I-55 10 12 20 69 40 57 44 64 70 72 74 39 80 90 94
8 I-57 55 24 64 70 72 74 80 94
5 I-59 10 12 20 65 24
12 I-64 70 44 55 70 57 69 65 71 75 77 81 95
14 I-65 10 85 20 59 22 40 24 64 71 74 70 80 94 90
1 I-66 81
2 I-68 79 70
12 I-69 45 10 55 40 24 64 80 90 94 96 75 94
1 I-69C 2
2 I-69E 2 37
1 I-69W 35
19 I-70 15 76 25 35 29 64 44 55 64 57 74 65 75 71 77 79 76 68 81
7 I-71 64 65 75 70 76 80 90
2 I-72 55 57
4 I-73 74 85 85 40
12 I-74 80 80 55 57 70 65 75 77 40 85 73 95
17 I-75 4 10 16 85 20 24 40 64 71 74 70 80 90 96 96 94 69
10 I-76 70 25 80 71 77 80 79 70 83 95
12 I-77 26 20 85 40 74 81 64 79 70 76 80 90
2 I-78 81 95
6 I-79 77 68 70 76 80 90
25 I-80 5 15 84 25 76 29 29 35 74 88 74 39 55 57 94 65 90 69 75 71 77 76 79 81 95
13 I-81 40 26 77 64 66 70 83 78 80 84 86 88 90
2 I-82 90 84
2 I-83 76 81
9 I-84 5 82 86 15 80 81 87 91 90
10 I-85 65 75 20 26 77 74 73 73 40 95
5 I-86 84 15 90 99 81
4 I-87 40 95 84 90
4 I-88 80 39 81 90
2 I-89 93 91
28 I-90 5 82 15 94 25 29 35 94 39 43 94 55 65 80 94 69 75 71 77 79 86 81 88 87 91 84 95 93
5 I-91 95 84 90 89 93
5 I-93 95 90 95 89 91
20 I-94 90 29 35W 35W 35E 90 39 41 43 41 90 55 57 80 65 90 69 96 75 69
17 I-95 4 10 16 26 20 74 40 85 64 76 78 80 87 91 93 90 93
4 I-96 69 94 75 75
0 I-97
1 I-99 86


Included in the list are all interchanges between 2dis with at least one access-controlled ramp. (For better or worse, this leaves out three interchanges, 70-76/99, 76/81, and 80/99.)

Interchanges are ordered from west to east, or south to north, as appropriate. If two routes intersect more than once, like I-10 and I-17, each is listed separately. Also, concurrencies are listed once, but routes that run parallel to one another for some distance are listed twice, to represent the set of interchanges at either end. (Looking back, I don't know if that was a good idea.) Multiple routes meeting at the same interchange, like I-55 meeting I-90 and I-94, are each listed separately. Overall, there are a total of 254 interchanges in the list, although due to con currencies, some of them are repeated.

I do believe this list to be complete, but it is definitely possible that I missed something, so if you notice an omission or error, please let me know.

[SkyPesos]

Just to continue the thread, I'll list the interstate interchanges of x70, x71 and x75 interstates off my head. I'll also include interchanges where one is a freeway state route that is signed like 3di for the x70 in parenthesis, since a good amount of them exist.

170: 64, 70, 270

270: 25, 44, 55 x2, 64, 70 x6, 71 x2, 76, 170, 255 x2, (364), 370 x1(+1), 495

370: (70), 270 x1(+1)

470: (25 x2), 49, 70 x5(+2), (76), 335, 435

670: 35, 70 x3, 71, 270

271: 71, 77, 90, 480

471: 71, 275

175: 275

275: 4, 40, 71 x2, 74, 75 x6, 94, 96, 175, 375, 471, 640, 696

375: 75, 275

475: 69, 75 x6

575: 75

675: 70, 75 x4, 285

[wanderer2575]

Nicely done!  But I notice you have I-75 and I-96 interchanging twice.  They meet only once.  (You have I-94 and I-69 interchanging twice and that is correct.)

[TheGrassGuy]

Does anyone have, by chance, a list of all interchanges where both routes are interstates, at least for 2DI's? I was thinking about making one, but I decided against making one just to reinvent the wheel.

Woah, I was making this, but gave up in the middle.