Intersecting multiples

[Alps]

I do my state. You do your state.

NJ:
Omitting US 1 (trivial):
======SOMEWHAT TRIVIAL======
3          9          end 3
3          21         interchange
3          153       former old road 153
3          444       interchange
3          495       interchange
4          20         end 4
4          208       end 208
4          444       interchange
7          21         end eastern 7
9          18         interchange
9          63         end 63
9          72         interchange
9          81         end 81
9          162       planned intersection
9          180       former intersection
======LESS TRIVIAL======
18         36         interchange
20         80         interchange
23         46         interchange
33         66         end 66
35         70         end 70
37         444       interchange
42         168       old road 168
70         700       crossing

[CoreySamson]

Here goes Texas: (probably not even a sliver of Texas's multiples)

Somewhat trivial:
TX 3 and TX 96
Spur 5 and I-45
TX 6 and TX 288
TX 7 and TX 21
TX 7 and TX 14
TX 7 and US 77
Beltway 8 and TX 288
I-10 and TX 80
I-10 and US 90
Spur 10 and US 90 ALT
I-10 and I-110
I-10 and I-410
I-10 and I-610

Less trivial:
TX 19 and US 190
I-20 and US 80
I-20 and I-820
I-45 and US 90

I'll add more to this later

[froggie]

Going to skip US 2 in Vermont for the same "trivial" situation.

US 4 - VT 100:  concurrency in Killington
US 4 - VT 12:  concurrency in Woodstock
US 5 - VT 30:  30 ends in Brattleboro
US 5 - VT 10A:  10A ends in Norwich
US 5 - VT 25:  intersection in Bradford (coincidentally the only traffic signal in Orange County)
US 5 - VT 105:  concurrency Newport-Derby
VT 5A - VT 105:  5A ends in Charleston
US 7 - VT 140:  intersection in Wallingford
US 7 - I-189:  189 ends in Burlington
VT 11 - VT 143:  143 ends in Springfield

[SkyPesos]

Oh boy, there's a lot in Ohio, so I might miss a couple. I'll add more later. Whoever's volunteering to do KY, have fun with the 4 digit routes

OH 2 (west to east): OH 18, OH 576, US 6, OH 34, OH 66, OH 108, OH 64, I-80, I-90, US 20, US 24, I-280, OH 590, OH 358, OH 4, US 250, OH 60, OH 58, OH 254, OH 252, US 42, OH 640, OH 306, OH 44

OH 3 (south to north): US 27, US 42, OH 264, near-misses I-75 and I-471, OH 561, OH 126, OH 48, OH 123, OH 72, OH 729, OH 207, OH 762, I-270, OH 315, US 33, US 36, OH 657, OH 768, OH 39, OH 60, US 30, OH 585, OH 162, OH 57, OH 18, OH 606, OH 303, I-90, US 6, former US 21

OH 4 (south to north): OH 48, OH 444, US 40, US 68, OH 72, OH 56, US 36, OH 100, US 224, US 20, I-80

OH 5 (west to east): OH 225, I-80, OH 45, OH 305,

US 6 (west to east): OH 576, OH 66, US 24, OH 108, OH 300, OH 510, OH 60, OH 252, US 42, I-90, OH 84, OH 174, OH 306, OH 528, OH 534,

OH 7 (south to north): OH 217, OH 553, OH 588, US 35, OH 735, OH 833, I-77, OH 147, I-70, OH 154, OH 14, US 224, US 322, OH 84, former US 21

OH 8 (south to north): I-80, I-480

OH 10 (west to east): US 20, I-80, I-480, I-90, I-490

OH 14 (west to east): US 42, US 322, I-490, US 224

OH 15 (south to north): OH 330, I-75, I-90

US 20 (west to east): OH 120, I-80, OH 420, OH 300, OH 600, OH 60, I-480, OH 640

US 23: OH 207, OH 161, OH 184

US 30: OH 60

US 35: I-70

US 42: OH 126

US 52: OH 104

I-75: I-675

I-80: I-480

Former US 21: US 42

Former US 25: I-75, US 50, I-275, I-675, OH 725, I-475

Other ones that I can think off the top of my head:
OH 126 & IN 252

[ilpt4u]

Every Even numbered route that IL 2 crosses:
Business US 20
US 20
IL 72
IL 64
IL 26
US 52
Ends at IL 40

IL 2, IL 26, and US 52 are a triplex, and a multiplictive equation 

[US 89]

This should be all of the current ones in Utah - not bothering with any former examples as there are way too many old routes. Not counting US 89/89A.

US 6, SR 132
US 6, SR 174
US 6, SR 36
US 6, SR 198 (twice)
US 6, SR 156
US 6, SR 96
SR 12, SR 24
SR 13, US 91
I-15, SR 75
I-15, SR 135
I-15, SR 180
I-15, SR 270 (depending on whether you count the ramps as part of 15)
I-15, SR 105
I-15, SR 225
I-15, SR 315
I-15, SR 240
I-15, SR 30
SR 24, SR 72
US 40, I-80
US 50, SR 100

There appear to be 19 pairs of intersecting multiples in the state: I-15 and US 6 combined account for 15 of them.

[ilpt4u]

Illinois has a Duplexed multiple: US 36/I-72

I feel like Illinois has a whole bunch of intersecting multiples.

I will ask: For Freeways/Tollways - do they need an interchange? Or is an intersection with no interchange acceptable? I-90 doesn't have direct ramps to US 45 (the ramps to I-190 and O'Hare make the connection), but they do cross

[kurumi]

Connecticut.
Lower number is at least 10. Unsigned routes omitted.

10: 20, 40, 70, 120, 150
15: 150
17: 68
53: 106
63: 126

[oscar]

Excluding 1 and Interstate H-1 intersections as trivial, and also the unsigned Interstates A-1 through A-4.

Alaska:

2 and 4     end 4 in Delta Junction
2 and 6     end 6 in Fox
4 and 8     end 8 in Paxson
98 and Yukon 2   both end at the international border north of Skagway

Hawaii (including only state-maintained, not county, routes):

H-2 and 80       end 80 in Wahiawa
H-3 and 63       interchange
H-3 and H-201  interchange
30 and 3000     end 3000
31 and 310       end 31 at end 310
36 and 360       end 36 at end 360
36 and 3600     end 3600 (unsigned)
50 and 550       end 550 in Waimea
56 and 560       end 56 at end 560
56 and 5600     both ends of 5600 (unsigned)
200 and 2000   end 200 at end 2000
340 and 3400   end 340 at end 3400
380 and 3800   end 3800

[ozarkman417]

While other route 2s have lots of multiples, MO 2 only has one: MO 52. If you include the KS route it ends at, you have another one: 68.

[SkyPesos]

While other route 2s have lots of multiples, MO 2 only has one: MO 52.

At least MO has I-35 and I-70

Other ones between 2 2di
I-5 and I-10
I-5 and I-15
I-5 and I-80
I-5 and I-90
I-10 and I-20
I-15 and I-90

[oscar]

Other ones between 2 2di
I-5 and I-10
I-5 and I-15

I-5 and I-15 don't intersect. South of I-8, route 15 is CA 15.

[thspfc]

US-2 and WI-70
US-2 and WI-112
US-12 and WI-60
US-14 and WI-56
*almost* WI-17 and US-51
US-18 and I-90
WI-22 and WI-44
WI-30 and I-90
WI-32 and WI-64
WI-35 and WI-70
WI-35 and WI-105 (talk about obscure)
I-41 and US-41 
I-43 and WI-172 (was this on purpose?)

I think that might be it. Wisconsin has fewer because there aren't many single digit routes. Speak up if I missed some.

[ilpt4u]

IL 3's List:
US 51
I-57
IL 150
IL 159
IL 156
I-255
IL 15 (maybe? Its close - can't tell how well it is signed in E St Louis)
I-270
IL 111

[NWI_Irish96]

Because of Indiana's grid system, odd numbers are more likely to intersect multiples.

IN 2: IN 4, US 6, IN 8, US 20, US 30
IN 3: US 6, IN 18, US 27, US 30, US 36, I-69, IN 120
IN 4: IN 104
IN 5:US 20, US 30, IN 105, IN 120, IN 205
US 6: IN 912
IN 7: IN 56
[IN 8 is the lowest numbered route that does not intersect a multiple]
IN 9: IN 18, US 36, I-90, IN 234
IN 10: IN 110
US 12: IN 312, IN 912
IN 13: IN 26
IN 15: US 30, I-90, IN 120
IN 19: IN 38
US 20: I-80, IN 520
IN 26: US 52
US 30: IN 930
US 31: I-465 (also passes under IN 62 but there is no interchange)
US 35: I-70
IN 37: I-74
US 41: IN 246
IN 45: IN 135
US 50: US 150, IN 250, IN 350, IN 450, IN 550
IN 59: IN 236

[SkyPesos]

IL 3's List:
IL 15 (maybe? Its close - can't tell how well it is signed in E St Louis)

IL 3 does intersect at IL 15's northern terminus along its concurrency with I-55/64. But the BGS doesn't sign IL 15. It seems like IL 15 uses Broadway north of 10th st instead of Missouri Ave, unlike what I previously thought , so there are only exits from NB 55/IL 3 and entrances to SB 55/IL 3. Correct me if I'm wrong, I zoomed in so much on google maps just to follow the microscopic route markers

Also ik we don't do former routes, but US 66 is an honorable mention for IL 3, because it's US 66

[hotdogPi]

2: 4, 8, 12, 16, US 20, 28, 32, 60, 62, 68, 70, 110, 112, 122, 126, 128, 140, I-190, US 202
3: US 6, 18, 60, I-90, I-93, 123 (no connection), 129, 228, I-495
4: 128
US 5: 10, US 20, I-90
US 6: 18, 24 (no connection), 114A (114 is on the other side of the state), 132, 138, 240
9: I-90, 126, 135
10: US 20, I-90
16: 128
US 20: 60, 140
27: 135
31: 62
70: 140

[ilpt4u]

IL 3's List:
IL 15 (maybe? Its close - can't tell how well it is signed in E St Louis)

IL 3 does intersect at IL 15's northern terminus along its concurrency with I-55/64. But the BGS doesn't sign IL 15. It seems like IL 15 uses Broadway north of 10th st instead of Missouri Ave, unlike what I previously thought , so there are only exits from NB 55/IL 3 and entrances to SB 55/IL 3. Correct me if I'm wrong, I zoomed in so much on google maps just to follow the microscopic route markers

Also ik we don't do former routes, but US 66 is an honorable mention for IL 3, because it's US 66

I could drive up to E St Louis and check, but I head to that area every now and then to play a bit at the Casino Queen Riverboat (IL Casinos are closed due to COVID restrictions/measures)

I will even take the IL 15 route in sometimes, vs I-64. The IL 15 shields just stop as you get close to 55/64 - I don't remember seeing the "End"  banner, so I'm not 100% sure on IL 15's northwest endpoint

When the exit for Barack Obama Ave is taken from I-55N/I-64E/IL 3N, the ramp merges into 4th St/Barack Obama Ave, and then the 1st IL 15 shield appears to take a right for IL 15 on Broadway: https://goo.gl/maps/kSr6Mv5T5youzR8s8

IL 15 is not posted on the BGS for I-55S/I-64W/IL 3S for 3rd St/Eads Bridge, either, despite that ramp connecting to Broadway, and when 3rd St reaches Broadway, IL 15 has no shield signed there, either

Makes me wonder if IL 15's NW endpoint is Broadway and 4th St. If Broadway and 4th is the endpoint, then IL 15 just misses IL 3

Well, using billburmaster.com's page on IL 15 in St Clair County, I did find the IL 15 Ends sign, right as Main St is about to go under I-55/64/US 40/IL 3. Whether that means IL 15 intersects IL 3, its still in the "close"  category

GSV shows this sign is still there, too, tho on GSV the IL 15 shield is above the Entrance Control GS instead of below
Sourced from http://www.billburmaster.com/rmsandw/illinois/state/il15stclair.html

[RoadsByArco]

Other ones between 2 2di
I-5 and I-10
I-5 and I-15

I-5 and I-15 don't intersect. South of I-8, route 15 is CA 15.

In the future, SR-15 is supposed to be signed as I-15 once the whole roadway is upgraded to Interstate standards (if I remember correctly.)

[TheHighwayMan3561]

MN fun (partial)

2: 6, 32, 38, 46, 92, 194, 200
3: 21
4: 12, former 16, 60, 68, 212
5: 10, 25, 55, 100, 120
6: 18, 210
7: 28, 119
10: 210, 610
12: 24
14: 42
15: 30, 60, 90
30: 60
35: 70

[cwf1701]

The only one i can think of for Michigan is M-5/M-10 in Downtown Detroit. (at the point where Grand River crosses the Lodge)

[froggie]

MN fun (partial)

Adding on:

MN 9/MN 27 in Herman
MN 11/MN 308 west of Roseau
US 14/MN 56 in Dodge Center
MN 16/MN 80 near Wykoff
I-35/MN 210 outside Cloquet/Carlton
I-35W/MN 280

[oscar]

Other ones between 2 2di
I-5 and I-10
I-5 and I-15

I-5 and I-15 don't intersect. South of I-8, route 15 is CA 15.

In the future, SR-15 is supposed to be signed as I-15 once the whole roadway is upgraded to Interstate standards (if I remember correctly.)

Don't hold your breath waiting for that to happen. Caltrans is in no hurry to Interstate-ize that or other freeways (like CA 210 and CA 905) that might seem to be logical additions to the Interstate system.

[akotchi]

Additional one for New Jersey.
3           120        end 120

[Mapmikey]

For Virginia:

VA 2: VA 30, VA 54
VA 3: VA 33, VA 201, VA 354, US 360, VA 204, US 522, US 15
VA 5: US 60 (twice), VA 895, I-295, VA 155
VA 6: US 522, VA 396, VA 288
VA 7: VA 287, VA 28, VA 420
VA 8: VA 40
VA 10: US 360, VA 150, VA 40, US 460
US 11: I-77, VA 121, VA 99, US 220, VA 363, VA 253, US 33, VA 55
US 13: VA 182
US 15: US 360, VA 45, US 60
US 17: VA 306, VA 238, VA 255, US 340
US 29: US 58
VA 30: US 360, US 60
VA 33: VA 198
US 33: VA 231
VA 36: VA 144
VA 40: US 360
US 60: VA 300, US 360
I-64: VA 384
VA 166: VA 332