What US Highway Crosses The Most Different Interstates And Vise Versa??

[thenetwork]

Pretty straightforward question with one caveat:  Even though a US Highway or Interstate may cross over the same signed route dozens of times (US-1 & I-95 for example), it only counts as one!

Challenge Issued...Go!

[hotdogPi]

My first thought was US 62, which crosses 28 Interstates:

190 290 90 86 79 80 680 76 77 270 670 71 70 75 64 65 69 24 57 49 35 40 235 240 44 27 10 110

EDIT: US 52 crosses 29 Interstates if both I-74s are counted separately:

94 29 694 35W 35E 494 90 88 39 55 80 57 65 865 465 74 70 275 75 71 471 64 77 81 74 80 85 95 526

[CNGL-Leudimin]

Even counting all crossings of US 1 as one, I-95 intersects many US routes: 1, 2 (Eastern), 3, 4, 6, 7, 9 (does 9W count?), 13, 15, 17, 20, 21, 23, 25, 27, 30, 40, 41, 44, 46, 50, 52, 60, 64, 70, 74, 76, 78, 80, 82, 84, 90, 92, 98, 130, 158, 176, 178, 192, 201, 202, 206, 250, 264, 278, 301, 321, 322, 341, 360, 378, 421, 441, 460, 501, 521 and 701. A grand total of 57 routes (without counting the US 9 split), with three near misses (5, 22, 33).

[ftballfan]

I-94 crosses 29 US Highways:
87 12 85 83 52 281 10 75 59 71 169 61 63 53 51 151 18 41 45 14 20 6 421 35 31 131 127 23 24

I-75 crosses 49 or 50 US Highways:
2 23 31 127 10 24 12 20 6 224 68 30 33 36 40 35 27 50 42 25 62 460 60 421 25W 441 70 321 74 64 11 41 411 19 78 29 80 341 280 82 319 84 221 129 90 98 301 92 17 (might be 50 depending on if US-76 makes it to I-75 in Dalton, GA)

[ftballfan]

I-90 crosses 56 US Highways:
97 395 2 195 95 93 12 287 191 89 212 87 14 16 85 83 183 281 81 75 59 71 169 218 63 52 61 53 51 151 18 14 20 41 6 421 35 31 131 127 23 24 250 42 422 322 19 62 219 11 9 4 7 202 5 1 (near misses: 65 69 - both miss by less than 5 miles in Albert Lea, MN)

[dfilpus]

EDIT: US 52 crosses 29 Interstates if both I-74s are counted separately:

94 29 694 35W 35E 494 90 88 39 55 80 57 65 865 465 74 70 275 75 71 471 64 77 81 74 40 85 95 526

I think you missed I 394 in downtown Minneapolis and I 69, which currently ends at I 465 ( US 52 ).  The second 80 in your list should be 40.

[Mapmikey]

Even counting all crossings of US 1 as one, I-95 intersects many US routes: 1, 2 (Eastern), 3, 4, 5, 6, 7, 9 (does 9W count?), 13, 15, 17, 20, 21, 22, 25, 27, 30, 40, 41, 44, 46, 50, 52, 60, 64, 70, 74, 76, 78, 80, 82, 84, 90, 92, 98, 130, 158, 192, 201, 202, 206, 264, 278, 301, 322, 341, 360, 378, 421, 441, 460, 501, 521 and 701. A grand total of 54 routes (without counting the US 9 split), with three near misses (33, 250 and 321).

I-95 does intersect both US 250 and US 321.  It also gets 23, 176, 178 and no longer gets 5

[Duke87]

I-95 does intersect both US 250 and US 321.  It also gets 23, 176, 178 and no longer gets 5

No longer? AFAIK US 5 and I-95 have never intersected.

[Mapmikey]

I-95 does intersect both US 250 and US 321.  It also gets 23, 176, 178 and no longer gets 5

No longer? AFAIK US 5 and I-95 have never intersected.

You are correct.  I was assuming it was true at some point because it was in the list the poster had made...

[CNGL-Leudimin]

Damn map, it wasn't clear about US 5, 250 and 321. I got US 33 right, though. And somehow I missed US 23, 176 and 178. I'm amending my post.

[roadman65]

Even counting all crossings of US 1 as one, I-95 intersects many US routes: 1, 2 (Eastern), 3, 4, 6, 7, 9 (does 9W count?), 13, 15, 17, 20, 21, 22, 23, 25, 27, 30, 40, 41, 44, 46, 50, 52, 60, 64, 70, 74, 76, 78, 80, 82, 84, 90, 92, 98, 130, 158, 176, 178, 192, 201, 202, 206, 250, 264, 278, 301, 321, 322, 341, 360, 378, 421, 441, 460, 501, 521 and 701. A grand total of 58 routes (without counting the US 9 split), with a near miss (That of US 33 in Richmond VA).

US 22 does not cross I-95.  It comes close to it though and even though its signed at Exit 14 in Newark, the actual Cincinnati, OH to Newark, NJ route ends about a mile away from I-95 at US 1 & 9.

[CNGL-Leudimin]

Once again, I got it wrong . I hope now it's correct.

[jp the roadgeek]

US 6 crosses 39 (40 in the future): I-15, I-70, I-25, I-270, I-76, I-180 (NE), I-80, I-680, I-480, I-29, I-35, I-235, I-380, I-280, I-74, I-180 (IL), I-39, I-55, I-355, I-57, I-294, I-94, I-65, I-69, I-75, I-90, I-271, I-79, (future I-99), I-476, I-81, I-84, I-87, I-684, I-91, I-384, I-395, I-295, I-95, I-195

US 20 crosses 33: I-5, I-84 (W), I-184, I-15, I-25, I-129, I-29, I-35, I-380, I-39, I-90, I-355, I-290, I-294, I-55, I-94, I-65, I-80, I-69, I-475, I-75, I-79, I-390, I-81, I-88, I-87, I-787, I-91, I-291, I-84 (E), I-395, I-495, I-95

US 30 crosses 34: I-405, I-5, I-84, I-205, I-82, I-184, I-86, I-15, I-80, I-25, I-29, I-35, I-380, I-88, I-39, I-55, I-57, I-65, I-69, I-469, I-75, I-71, I-77, I-376, I-79, I-279, I-76, I-70, I-99, I-81, I-476, I-676, I-95, I-295

[hbelkins]

I-75 crosses 49 or 50 US Highways:
2 23 31 127 10 24 12 20 6 224 68 30 33 36 40 35 27 50 42 25 62 460 60 421 25W 441 70 321 74 64 11 41 411 19 78 29 80 341 280 82 319 84 221 129 90 98 301 92 17 (might be 50 depending on if US-76 makes it to I-75 in Dalton, GA)

You missed 52 (in Cincinnati), 25E (in Corbin) and yes, 76 intersects I-75 in Tennessee. Also decommissioned routes include 30S (currently OH 309) and 227. And the historic routing of I-75 through Knoxville also intersected 129.

[paulthemapguy]

I want to try US20
I-90, 95, 495, 395, 84,
291, 91, 787, 87, 88,
81, 390, 79, 80, 75,
475, 94, 294, 55, 290,
355, 39, 380, 35, 29,
129, 25, 15, 84, 5.
Count:  Only 30.

I want to also try US50
I-5, 580, 15, 70, 25,
135, 35, 435, 470, 44,
270, 55, 255, 64, 57,
69, 65, 275, 71, 471,
75, 77, 79, 81, 66,
495, 395, 97 (595?)
Count: 28 or 29

And US6:
I-195, 95, 295, 395, 384,
84, 91, 684, 87, 81,
476, 79, 271, 90, 75,
69, 65, 94, 294, 57,
355, 80, 55, 39, 180,
280, 74, 380, 235, 35,
29, 480, 680, 76, 270,
70, 25, 15.
That's a strong contender at 38.

[jp the roadgeek]

I want to try US20
I-90, 95, 495, 395, 84,
291, 91, 787, 87, 88,
81, 390, 79, 80, 75,
475, 94, 294, 55, 290,
355, 39, 380, 35, 29,
129, 25, 15, 84, 5.
Count:  Only 30.

And US6:
I-195, 95, 295, 395, 384,
84, (291?) 91, 684, 87, 81,
476, 79, 271, 90, 75,
94, 294, 57, 355, 80,
55, 39, 180, 280, 74,
380, 235, 35, 29, 480,
680, 76, 270, 70, 25,
15.
That's a strong contender at 36 (37?).

I forgot I-129 for US 20. US 6 just misses crossing I-291 by about 1/4 mi or so. US 6 also crosses I-65 (while triplexed with I-80/94), I-69, and a second I-180.  US 20 crosses I-69, the north end of I-65 (while duplexed with US 12), and I-184 (at 184's east end while duplexed with US 26)

[thenetwork]

I-75 crosses 49 or 50 US Highways:
2 23 31 127 10 24 12 20 6 224 68 30 33 36 40 35 27 50 42 25 62 460 60 421 25W 441 70 321 74 64 11 41 411 19 78 29 80 341 280 82 319 84 221 129 90 98 301 92 17 (might be 50 depending on if US-76 makes it to I-75 in Dalton, GA)

You missed 52 (in Cincinnati), 25E (in Corbin) and yes, 76 intersects I-75 in Tennessee. Also decommissioned routes include 30S (currently OH 309) and 227. And the historic routing of I-75 through Knoxville also intersected 129.

If you count decommissioned (or now-truncated) US routes, you could add US-223 when it ended in downtown Toledo up until the mid 80s.


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US-40 is tricky as you will see...It's about 38 give or take (using a crappy Champion US Road Atlas) :  I-80, I-70, I-25, I-225, I-135, I-35, I-470 (Topeka), I-435, I-635, I-35, I-670, I-29(?), I-470 (Kansas City, MO), I-64, I-270 (St. Louis), I-170, I-44, I-55, I-255, I-57, I-465, (Future I-69), I-65, I-74, I-75, I-270 (Columbus), I-71, I-77, I-79, I-68, I-81, I-270 (?Frederick, MD?), I-695, I-83, Former I-170, I-895, I-95, I-295.

Missing by just a few miles: I-29 (?), I-49 (for now), I-335 (?), I-675, I-670 (Columbus), I-470 (Wheeling), I-395, I-195, I-795, I-495 (Wilmington).

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US-24 -- 22 Interstates:   I-70, I-435, I-635, I-35, I-29, I-172, I-474, I-74, I-39, I-55, I-57, I-65, I-69, I-469, I-475, I-80, I-90, I-75, I-275, I-94, I-96, I-696.   Not bad for a US route which only spans about half the country's width.

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US-41 (damn, this is getting addicting) --  27 Interstates:  I-43, I-41, I-94, I-794, I-894, I-55, I-90, I-80, i-74, i-70, I-64, I-164, I-69, I-66, I-24, I-65, I-40, I-440, I-840, I-75, I-285, I-85, I-20, I-475, I-10, I-275, I-95

[roadman65]

Once again, I got it wrong . I hope now it's correct.

Don't worry, we all get it wrong at times. 

[Mapmikey]

I-75 crosses 49 or 50 US Highways:
2 23 31 127 10 24 12 20 6 224 68 30 33 36 40 35 27 50 42 25 62 460 60 421 25W 441 70 321 74 64 11 41 411 19 78 29 80 341 280 82 319 84 221 129 90 98 301 92 17 (might be 50 depending on if US-76 makes it to I-75 in Dalton, GA)

You missed 52 (in Cincinnati), 25E (in Corbin) and yes, 76 intersects I-75 in Tennessee. Also decommissioned routes include 30S (currently OH 309) and 227. And the historic routing of I-75 through Knoxville also intersected 129.

I-75 also crosses US 278 in Atlanta.  It could be argued that it does not intersect US 70 (there is an interchange on I-40/75 marked for US 11-70 but there are no direct ramps between the two highways).

[paulthemapguy]

I want to try US20
I-90, 95, 495, 395, 84,
291, 91, 787, 87, 88,
81, 390, 79, 80, 75,
475, 94, 294, 55, 290,
355, 39, 380, 35, 29,
129, 25, 15, 84, 5.
Count:  Only 30.

And US6:
I-195, 95, 295, 395, 384,
84, (291?) 91, 684, 87, 81,
476, 79, 271, 90, 75,
94, 294, 57, 355, 80,
55, 39, 180, 280, 74,
380, 235, 35, 29, 480,
680, 76, 270, 70, 25,
15.
That's a strong contender at 36 (37?).

I forgot I-129 for US 20. US 6 just misses crossing I-291 by about 1/4 mi or so. US 6 also crosses I-65 (while triplexed with I-80/94), I-69, and a second I-180.  US 20 crosses I-69, the north end of I-65 (while duplexed with US 12), and I-184 (at 184's east end while duplexed with US 26)

Edited my previous post.  What other I-180 crosses US6 other than the one in Illinois?

[Max Rockatansky]

Now the inverse question is what mainline Interstate crosses the LEAST number of US Routes?  I'm thinking it might be I-17 and I-8 with only 1 in US 60 and US 95 respectively.

[Eth]

Now the inverse question is what mainline Interstate crosses the LEAST number of US Routes?  I'm thinking it might be I-17 and I-8 with only 1 in US 60 and US 95 respectively.

I-97 doesn't cross any US routes, though it does end at 50/301.

[oscar]

Now the inverse question is what mainline Interstate crosses the LEAST number of US Routes?  I'm thinking it might be I-17 and I-8 with only 1 in US 60 and US 95 respectively.

I-97 doesn't cross any US routes, though it does end at 50/301.

And none of the Interstates in Alaska, Hawaii, and Puerto Rico even touch U.S. routes, since there are no U.S. routes in those jurisdictions.

I think I-86 in Idaho crosses only US 91, but most of it is concurrent with US 30.

[Mapmikey]

Eastern I-88 at Exit 24 is signed for US 20 and NY 7 but has no direct ramps to either, so this one is either 1 crossing or none

[oscar]

Eastern I-88 at Exit 24 is signed for US 20 and NY 7 but has no direct ramps to either, so this one is either 1 crossing or none

It comes thisclose to US 11, without touching or crossing.